./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c3fed411 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_BER_test4-3.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 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 15:34:51,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 15:34:51,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 15:34:51,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 15:34:51,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 15:34:51,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 15:34:51,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 15:34:51,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 15:34:51,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 15:34:51,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 15:34:51,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 15:34:51,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 15:34:51,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 15:34:51,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 15:34:51,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 15:34:51,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 15:34:51,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 15:34:51,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 15:34:51,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 15:34:51,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 15:34:51,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 15:34:51,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 15:34:51,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 15:34:51,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 15:34:51,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 15:34:51,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 15:34:51,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 15:34:51,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 15:34:51,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 15:34:51,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 15:34:51,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 15:34:51,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 15:34:51,802 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 15:34:51,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 15:34:51,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 15:34:51,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 15:34:51,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 15:34:51,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 15:34:51,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 15:34:51,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 15:34:51,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 15:34:51,806 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-19 15:34:51,820 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 15:34:51,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 15:34:51,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 15:34:51,820 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 15:34:51,821 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-19 15:34:51,821 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-19 15:34:51,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 15:34:51,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 15:34:51,822 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 15:34:51,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 15:34:51,822 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 15:34:51,822 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 15:34:51,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 15:34:51,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 15:34:51,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 15:34:51,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-19 15:34:51,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-19 15:34:51,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-19 15:34:51,824 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-19 15:34:51,824 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 15:34:51,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 15:34:51,824 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 15:34:51,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-19 15:34:51,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 15:34:51,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 15:34:51,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-19 15:34:51,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 15:34:51,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 15:34:51,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-19 15:34:51,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-19 15:34:51,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 15:34:51,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-19 15:34:51,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-19 15:34:51,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 15:34:51,826 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2dcad53e9f7fd6e0b6384d19db4719ec6aa2601fd94c6ce0d3c746f1ec6b3601 [2021-12-19 15:34:52,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 15:34:52,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 15:34:52,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 15:34:52,045 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 15:34:52,045 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 15:34:52,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2021-12-19 15:34:52,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a9e8eb6f/e8bc9299efa64618958ead746ab4a506/FLAGe8443cb9e [2021-12-19 15:34:52,550 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 15:34:52,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-3.i [2021-12-19 15:34:52,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a9e8eb6f/e8bc9299efa64618958ead746ab4a506/FLAGe8443cb9e [2021-12-19 15:34:52,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a9e8eb6f/e8bc9299efa64618958ead746ab4a506 [2021-12-19 15:34:52,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 15:34:52,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 15:34:52,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 15:34:52,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 15:34:52,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 15:34:52,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:34:52" (1/1) ... [2021-12-19 15:34:52,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d324c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:34:52, skipping insertion in model container [2021-12-19 15:34:52,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:34:52" (1/1) ... [2021-12-19 15:34:52,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 15:34:52,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 15:34:52,915 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_BER_test4-3.i[33021,33034] [2021-12-19 15:34:53,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 15:34:53,026 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 15:34:53,056 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_BER_test4-3.i[33021,33034] [2021-12-19 15:34:53,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 15:34:53,164 INFO L208 MainTranslator]: Completed translation [2021-12-19 15:34:53,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:34:53 WrapperNode [2021-12-19 15:34:53,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 15:34:53,166 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 15:34:53,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 15:34:53,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 15:34:53,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:34:53" (1/1) ... [2021-12-19 15:34:53,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:34:53" (1/1) ... [2021-12-19 15:34:53,256 INFO L137 Inliner]: procedures = 177, calls = 448, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1451 [2021-12-19 15:34:53,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 15:34:53,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 15:34:53,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 15:34:53,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 15:34:53,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:34:53" (1/1) ... [2021-12-19 15:34:53,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:34:53" (1/1) ... [2021-12-19 15:34:53,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:34:53" (1/1) ... [2021-12-19 15:34:53,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:34:53" (1/1) ... [2021-12-19 15:34:53,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:34:53" (1/1) ... [2021-12-19 15:34:53,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:34:53" (1/1) ... [2021-12-19 15:34:53,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:34:53" (1/1) ... [2021-12-19 15:34:53,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 15:34:53,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 15:34:53,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 15:34:53,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 15:34:53,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:34:53" (1/1) ... [2021-12-19 15:34:53,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 15:34:53,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:34:53,380 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) [2021-12-19 15:34:53,409 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 [2021-12-19 15:34:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-19 15:34:53,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-19 15:34:53,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-19 15:34:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-19 15:34:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-19 15:34:53,420 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-19 15:34:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-19 15:34:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 15:34:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-19 15:34:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-19 15:34:53,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-19 15:34:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-19 15:34:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 15:34:53,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 15:34:53,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 15:34:53,645 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 15:34:53,646 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 15:34:54,570 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 15:34:54,575 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 15:34:54,575 INFO L301 CfgBuilder]: Removed 77 assume(true) statements. [2021-12-19 15:34:54,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:34:54 BoogieIcfgContainer [2021-12-19 15:34:54,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 15:34:54,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-19 15:34:54,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-19 15:34:54,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-19 15:34:54,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:34:52" (1/3) ... [2021-12-19 15:34:54,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1985a668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:34:54, skipping insertion in model container [2021-12-19 15:34:54,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:34:53" (2/3) ... [2021-12-19 15:34:54,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1985a668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:34:54, skipping insertion in model container [2021-12-19 15:34:54,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:34:54" (3/3) ... [2021-12-19 15:34:54,582 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-3.i [2021-12-19 15:34:54,586 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-19 15:34:54,587 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-19 15:34:54,634 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-19 15:34:54,639 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 [2021-12-19 15:34:54,641 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-19 15:34:54,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 271 states, 246 states have (on average 1.6951219512195121) internal successors, (417), 262 states have internal predecessors, (417), 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) [2021-12-19 15:34:54,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-19 15:34:54,668 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:34:54,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-19 15:34:54,669 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)] === [2021-12-19 15:34:54,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:34:54,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1126982839, now seen corresponding path program 1 times [2021-12-19 15:34:54,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:34:54,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612280145] [2021-12-19 15:34:54,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:34:54,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:34:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:34:54,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:34:54,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:34:54,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612280145] [2021-12-19 15:34:54,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612280145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:34:54,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:34:54,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:34:54,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064013000] [2021-12-19 15:34:54,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:34:54,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 15:34:54,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:34:54,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 15:34:54,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:34:54,848 INFO L87 Difference]: Start difference. First operand has 271 states, 246 states have (on average 1.6951219512195121) internal successors, (417), 262 states have internal predecessors, (417), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:34:54,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:34:54,969 INFO L93 Difference]: Finished difference Result 715 states and 1205 transitions. [2021-12-19 15:34:54,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 15:34:54,971 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 [2021-12-19 15:34:54,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:34:54,979 INFO L225 Difference]: With dead ends: 715 [2021-12-19 15:34:54,980 INFO L226 Difference]: Without dead ends: 392 [2021-12-19 15:34:54,983 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 [2021-12-19 15:34:54,985 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 217 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 725 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 [2021-12-19 15:34:54,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 725 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:34:54,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-12-19 15:34:55,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 220. [2021-12-19 15:34:55,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 197 states have (on average 1.3299492385786802) internal successors, (262), 211 states have internal predecessors, (262), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-19 15:34:55,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 294 transitions. [2021-12-19 15:34:55,033 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 294 transitions. Word has length 6 [2021-12-19 15:34:55,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:34:55,033 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 294 transitions. [2021-12-19 15:34:55,033 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) [2021-12-19 15:34:55,033 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 294 transitions. [2021-12-19 15:34:55,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-19 15:34:55,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:34:55,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:34:55,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-19 15:34:55,038 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)] === [2021-12-19 15:34:55,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:34:55,039 INFO L85 PathProgramCache]: Analyzing trace with hash 765811442, now seen corresponding path program 1 times [2021-12-19 15:34:55,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:34:55,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926322060] [2021-12-19 15:34:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:34:55,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:34:55,231 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:34:55,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1650029285] [2021-12-19 15:34:55,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:34:55,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:34:55,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:34:55,247 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) [2021-12-19 15:34:55,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-19 15:34:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:34:56,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 15:34:56,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:34:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:34:56,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:34:56,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:34:56,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926322060] [2021-12-19 15:34:56,325 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:34:56,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650029285] [2021-12-19 15:34:56,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650029285] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:34:56,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:34:56,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:34:56,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661022687] [2021-12-19 15:34:56,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:34:56,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 15:34:56,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:34:56,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 15:34:56,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:34:56,332 INFO L87 Difference]: Start difference. First operand 220 states and 294 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:34:56,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:34:56,391 INFO L93 Difference]: Finished difference Result 455 states and 613 transitions. [2021-12-19 15:34:56,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 15:34:56,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-12-19 15:34:56,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:34:56,393 INFO L225 Difference]: With dead ends: 455 [2021-12-19 15:34:56,393 INFO L226 Difference]: Without dead ends: 241 [2021-12-19 15:34:56,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:34:56,395 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:34:56,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:34:56,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-12-19 15:34:56,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2021-12-19 15:34:56,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 217 states have (on average 1.2995391705069124) internal successors, (282), 231 states have internal predecessors, (282), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-19 15:34:56,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 314 transitions. [2021-12-19 15:34:56,404 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 314 transitions. Word has length 103 [2021-12-19 15:34:56,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:34:56,405 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 314 transitions. [2021-12-19 15:34:56,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:34:56,405 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 314 transitions. [2021-12-19 15:34:56,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-19 15:34:56,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:34:56,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:34:56,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-19 15:34:56,622 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 [2021-12-19 15:34:56,622 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)] === [2021-12-19 15:34:56,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:34:56,623 INFO L85 PathProgramCache]: Analyzing trace with hash 525571696, now seen corresponding path program 1 times [2021-12-19 15:34:56,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:34:56,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799266793] [2021-12-19 15:34:56,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:34:56,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:34:56,767 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:34:56,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [684919559] [2021-12-19 15:34:56,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:34:56,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:34:56,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:34:56,770 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) [2021-12-19 15:34:56,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-19 15:34:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:34:57,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 15:34:57,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:34:57,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:34:57,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:34:57,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:34:57,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799266793] [2021-12-19 15:34:57,790 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:34:57,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684919559] [2021-12-19 15:34:57,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684919559] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:34:57,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:34:57,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:34:57,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424292772] [2021-12-19 15:34:57,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:34:57,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 15:34:57,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:34:57,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 15:34:57,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:34:57,792 INFO L87 Difference]: Start difference. First operand 240 states and 314 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:34:57,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:34:57,839 INFO L93 Difference]: Finished difference Result 495 states and 653 transitions. [2021-12-19 15:34:57,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 15:34:57,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-12-19 15:34:57,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:34:57,857 INFO L225 Difference]: With dead ends: 495 [2021-12-19 15:34:57,857 INFO L226 Difference]: Without dead ends: 261 [2021-12-19 15:34:57,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:34:57,858 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:34:57,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:34:57,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-12-19 15:34:57,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2021-12-19 15:34:57,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 237 states have (on average 1.2742616033755274) internal successors, (302), 251 states have internal predecessors, (302), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-19 15:34:57,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 334 transitions. [2021-12-19 15:34:57,867 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 334 transitions. Word has length 103 [2021-12-19 15:34:57,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:34:57,867 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 334 transitions. [2021-12-19 15:34:57,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:34:57,867 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 334 transitions. [2021-12-19 15:34:57,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-19 15:34:57,875 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:34:57,875 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:34:57,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-19 15:34:58,083 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 [2021-12-19 15:34:58,083 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)] === [2021-12-19 15:34:58,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:34:58,084 INFO L85 PathProgramCache]: Analyzing trace with hash 919938482, now seen corresponding path program 1 times [2021-12-19 15:34:58,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:34:58,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232948027] [2021-12-19 15:34:58,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:34:58,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:34:58,227 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:34:58,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707184871] [2021-12-19 15:34:58,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:34:58,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:34:58,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:34:58,229 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) [2021-12-19 15:34:58,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-19 15:34:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:34:59,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 15:34:59,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:34:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:34:59,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:34:59,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:34:59,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232948027] [2021-12-19 15:34:59,366 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:34:59,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707184871] [2021-12-19 15:34:59,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707184871] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:34:59,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:34:59,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 15:34:59,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943510322] [2021-12-19 15:34:59,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:34:59,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:34:59,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:34:59,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:34:59,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:34:59,368 INFO L87 Difference]: Start difference. First operand 260 states and 334 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:34:59,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:34:59,421 INFO L93 Difference]: Finished difference Result 505 states and 653 transitions. [2021-12-19 15:34:59,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 15:34:59,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-12-19 15:34:59,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:34:59,423 INFO L225 Difference]: With dead ends: 505 [2021-12-19 15:34:59,423 INFO L226 Difference]: Without dead ends: 251 [2021-12-19 15:34:59,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:34:59,424 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 239 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:34:59,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 562 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:34:59,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-12-19 15:34:59,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 246. [2021-12-19 15:34:59,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 223 states have (on average 1.2600896860986548) internal successors, (281), 237 states have internal predecessors, (281), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-19 15:34:59,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 313 transitions. [2021-12-19 15:34:59,432 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 313 transitions. Word has length 103 [2021-12-19 15:34:59,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:34:59,432 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 313 transitions. [2021-12-19 15:34:59,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:34:59,432 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 313 transitions. [2021-12-19 15:34:59,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-19 15:34:59,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:34:59,433 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:34:59,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-19 15:34:59,643 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 [2021-12-19 15:34:59,644 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:34:59,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:34:59,644 INFO L85 PathProgramCache]: Analyzing trace with hash 6087360, now seen corresponding path program 1 times [2021-12-19 15:34:59,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:34:59,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959814778] [2021-12-19 15:34:59,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:34:59,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:34:59,771 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:34:59,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103219433] [2021-12-19 15:34:59,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:34:59,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:34:59,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:34:59,772 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) [2021-12-19 15:34:59,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-19 15:35:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:35:00,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 2944 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 15:35:00,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:35:01,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:35:01,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:35:01,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:35:01,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959814778] [2021-12-19 15:35:01,036 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:35:01,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103219433] [2021-12-19 15:35:01,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103219433] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:35:01,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:35:01,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 15:35:01,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220519453] [2021-12-19 15:35:01,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:35:01,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:35:01,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:35:01,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:35:01,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:35:01,038 INFO L87 Difference]: Start difference. First operand 246 states and 313 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:35:01,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:35:01,107 INFO L93 Difference]: Finished difference Result 566 states and 720 transitions. [2021-12-19 15:35:01,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 15:35:01,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-12-19 15:35:01,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:35:01,110 INFO L225 Difference]: With dead ends: 566 [2021-12-19 15:35:01,110 INFO L226 Difference]: Without dead ends: 326 [2021-12-19 15:35:01,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:35:01,111 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 232 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:35:01,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 857 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:35:01,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-12-19 15:35:01,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 232. [2021-12-19 15:35:01,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 209 states have (on average 1.244019138755981) internal successors, (260), 223 states have internal predecessors, (260), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-19 15:35:01,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 292 transitions. [2021-12-19 15:35:01,117 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 292 transitions. Word has length 103 [2021-12-19 15:35:01,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:35:01,118 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 292 transitions. [2021-12-19 15:35:01,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:35:01,118 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 292 transitions. [2021-12-19 15:35:01,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-19 15:35:01,119 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:35:01,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:35:01,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-19 15:35:01,334 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 [2021-12-19 15:35:01,334 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:35:01,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:35:01,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2030023538, now seen corresponding path program 1 times [2021-12-19 15:35:01,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:35:01,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083991117] [2021-12-19 15:35:01,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:01,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:35:01,445 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:35:01,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1847212728] [2021-12-19 15:35:01,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:01,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:35:01,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:35:01,446 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) [2021-12-19 15:35:01,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-19 15:35:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:35:02,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 2930 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 15:35:02,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:35:02,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:35:02,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:35:02,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:35:02,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083991117] [2021-12-19 15:35:02,816 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:35:02,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847212728] [2021-12-19 15:35:02,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847212728] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:35:02,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:35:02,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:35:02,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506468435] [2021-12-19 15:35:02,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:35:02,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:35:02,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:35:02,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:35:02,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:35:02,818 INFO L87 Difference]: Start difference. First operand 232 states and 292 transitions. Second operand has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:35:02,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:35:02,846 INFO L93 Difference]: Finished difference Result 416 states and 516 transitions. [2021-12-19 15:35:02,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 15:35:02,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-12-19 15:35:02,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:35:02,865 INFO L225 Difference]: With dead ends: 416 [2021-12-19 15:35:02,865 INFO L226 Difference]: Without dead ends: 415 [2021-12-19 15:35:02,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:35:02,866 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 105 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 936 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 [2021-12-19 15:35:02,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 936 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:35:02,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-12-19 15:35:02,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 413. [2021-12-19 15:35:02,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 384 states have (on average 1.2213541666666667) internal successors, (469), 398 states have internal predecessors, (469), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-19 15:35:02,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 513 transitions. [2021-12-19 15:35:02,876 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 513 transitions. Word has length 103 [2021-12-19 15:35:02,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:35:02,877 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 513 transitions. [2021-12-19 15:35:02,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:35:02,877 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 513 transitions. [2021-12-19 15:35:02,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-19 15:35:02,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:35:02,878 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:35:02,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-19 15:35:03,078 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 [2021-12-19 15:35:03,078 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:35:03,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:35:03,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1493778997, now seen corresponding path program 1 times [2021-12-19 15:35:03,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:35:03,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989056383] [2021-12-19 15:35:03,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:03,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:35:03,183 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:35:03,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [580738108] [2021-12-19 15:35:03,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:03,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:35:03,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:35:03,185 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) [2021-12-19 15:35:03,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-19 15:35:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:35:04,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 2931 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 15:35:04,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:35:04,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:35:04,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:35:04,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:35:04,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989056383] [2021-12-19 15:35:04,692 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:35:04,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580738108] [2021-12-19 15:35:04,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580738108] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:35:04,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:35:04,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:35:04,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205252928] [2021-12-19 15:35:04,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:35:04,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:35:04,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:35:04,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:35:04,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:35:04,695 INFO L87 Difference]: Start difference. First operand 413 states and 513 transitions. Second operand has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:35:04,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:35:04,723 INFO L93 Difference]: Finished difference Result 413 states and 513 transitions. [2021-12-19 15:35:04,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 15:35:04,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-12-19 15:35:04,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:35:04,725 INFO L225 Difference]: With dead ends: 413 [2021-12-19 15:35:04,725 INFO L226 Difference]: Without dead ends: 412 [2021-12-19 15:35:04,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:35:04,726 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 135 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:35:04,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 553 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:35:04,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-12-19 15:35:04,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2021-12-19 15:35:04,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 384 states have (on average 1.21875) internal successors, (468), 397 states have internal predecessors, (468), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-19 15:35:04,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 512 transitions. [2021-12-19 15:35:04,739 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 512 transitions. Word has length 104 [2021-12-19 15:35:04,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:35:04,739 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 512 transitions. [2021-12-19 15:35:04,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:35:04,740 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 512 transitions. [2021-12-19 15:35:04,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-19 15:35:04,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:35:04,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:35:04,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-19 15:35:04,963 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 [2021-12-19 15:35:04,963 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:35:04,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:35:04,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1365413568, now seen corresponding path program 1 times [2021-12-19 15:35:04,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:35:04,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026608704] [2021-12-19 15:35:04,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:04,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:35:05,103 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:35:05,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [672329812] [2021-12-19 15:35:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:05,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:35:05,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:35:05,105 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) [2021-12-19 15:35:05,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-19 15:35:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:35:06,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 15:35:06,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:35:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:35:06,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:35:06,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:35:06,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:35:06,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026608704] [2021-12-19 15:35:06,818 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:35:06,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672329812] [2021-12-19 15:35:06,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672329812] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:35:06,819 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:35:06,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-19 15:35:06,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282299327] [2021-12-19 15:35:06,819 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:35:06,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-19 15:35:06,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:35:06,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-19 15:35:06,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-19 15:35:06,820 INFO L87 Difference]: Start difference. First operand 412 states and 512 transitions. Second operand has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:35:06,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:35:06,915 INFO L93 Difference]: Finished difference Result 634 states and 796 transitions. [2021-12-19 15:35:06,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-19 15:35:06,915 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-19 15:35:06,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:35:06,917 INFO L225 Difference]: With dead ends: 634 [2021-12-19 15:35:06,917 INFO L226 Difference]: Without dead ends: 600 [2021-12-19 15:35:06,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-19 15:35:06,918 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 647 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:35:06,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 1523 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:35:06,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-12-19 15:35:06,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2021-12-19 15:35:06,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 566 states have (on average 1.2102473498233215) internal successors, (685), 579 states have internal predecessors, (685), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-19 15:35:06,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 741 transitions. [2021-12-19 15:35:06,951 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 741 transitions. Word has length 108 [2021-12-19 15:35:06,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:35:06,952 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 741 transitions. [2021-12-19 15:35:06,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:35:06,952 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 741 transitions. [2021-12-19 15:35:06,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-19 15:35:06,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:35:06,954 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:35:06,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-19 15:35:07,175 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 [2021-12-19 15:35:07,175 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)] === [2021-12-19 15:35:07,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:35:07,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1366065166, now seen corresponding path program 1 times [2021-12-19 15:35:07,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:35:07,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010327670] [2021-12-19 15:35:07,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:07,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:35:07,276 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:35:07,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657465551] [2021-12-19 15:35:07,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:07,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:35:07,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:35:07,278 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) [2021-12-19 15:35:07,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-19 15:35:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:35:08,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 2960 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 15:35:08,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:35:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:35:08,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:35:08,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:35:08,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010327670] [2021-12-19 15:35:08,993 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:35:08,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657465551] [2021-12-19 15:35:08,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657465551] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:35:08,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:35:08,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:35:08,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615111010] [2021-12-19 15:35:08,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:35:08,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 15:35:08,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:35:08,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 15:35:08,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:35:08,995 INFO L87 Difference]: Start difference. First operand 600 states and 741 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:35:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:35:09,036 INFO L93 Difference]: Finished difference Result 1140 states and 1414 transitions. [2021-12-19 15:35:09,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 15:35:09,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-19 15:35:09,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:35:09,040 INFO L225 Difference]: With dead ends: 1140 [2021-12-19 15:35:09,040 INFO L226 Difference]: Without dead ends: 598 [2021-12-19 15:35:09,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:35:09,042 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 15 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:35:09,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 534 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:35:09,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-12-19 15:35:09,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2021-12-19 15:35:09,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 564 states have (on average 1.2092198581560283) internal successors, (682), 577 states have internal predecessors, (682), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-19 15:35:09,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 738 transitions. [2021-12-19 15:35:09,057 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 738 transitions. Word has length 108 [2021-12-19 15:35:09,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:35:09,058 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 738 transitions. [2021-12-19 15:35:09,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 15:35:09,058 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 738 transitions. [2021-12-19 15:35:09,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-19 15:35:09,059 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:35:09,059 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:35:09,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-19 15:35:09,272 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 [2021-12-19 15:35:09,272 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)] === [2021-12-19 15:35:09,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:35:09,272 INFO L85 PathProgramCache]: Analyzing trace with hash -321867117, now seen corresponding path program 1 times [2021-12-19 15:35:09,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:35:09,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306622477] [2021-12-19 15:35:09,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:09,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:35:09,355 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:35:09,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743920579] [2021-12-19 15:35:09,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:09,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:35:09,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:35:09,357 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) [2021-12-19 15:35:09,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-19 15:35:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:35:10,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 2097 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 15:35:10,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:35:11,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-19 15:35:11,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:35:11,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:35:11,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306622477] [2021-12-19 15:35:11,220 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:35:11,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743920579] [2021-12-19 15:35:11,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743920579] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:35:11,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:35:11,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 15:35:11,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063026990] [2021-12-19 15:35:11,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:35:11,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 15:35:11,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:35:11,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 15:35:11,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:35:11,222 INFO L87 Difference]: Start difference. First operand 598 states and 738 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-19 15:35:11,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:35:11,254 INFO L93 Difference]: Finished difference Result 1049 states and 1302 transitions. [2021-12-19 15:35:11,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 15:35:11,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 123 [2021-12-19 15:35:11,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:35:11,257 INFO L225 Difference]: With dead ends: 1049 [2021-12-19 15:35:11,257 INFO L226 Difference]: Without dead ends: 596 [2021-12-19 15:35:11,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:35:11,258 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 57 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 536 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 [2021-12-19 15:35:11,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 536 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:35:11,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-12-19 15:35:11,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2021-12-19 15:35:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 562 states have (on average 1.208185053380783) internal successors, (679), 575 states have internal predecessors, (679), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-19 15:35:11,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 735 transitions. [2021-12-19 15:35:11,271 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 735 transitions. Word has length 123 [2021-12-19 15:35:11,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:35:11,271 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 735 transitions. [2021-12-19 15:35:11,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-19 15:35:11,271 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 735 transitions. [2021-12-19 15:35:11,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-19 15:35:11,272 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:35:11,272 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:35:11,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-19 15:35:11,495 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 [2021-12-19 15:35:11,495 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)] === [2021-12-19 15:35:11,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:35:11,496 INFO L85 PathProgramCache]: Analyzing trace with hash 623227202, now seen corresponding path program 1 times [2021-12-19 15:35:11,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:35:11,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217789469] [2021-12-19 15:35:11,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:11,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:35:11,556 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:35:11,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143229180] [2021-12-19 15:35:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:11,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:35:11,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:35:11,558 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) [2021-12-19 15:35:11,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-19 15:35:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:35:13,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-19 15:35:13,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:35:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-19 15:35:13,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:35:13,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:35:13,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217789469] [2021-12-19 15:35:13,204 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:35:13,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143229180] [2021-12-19 15:35:13,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143229180] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:35:13,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:35:13,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 15:35:13,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827137452] [2021-12-19 15:35:13,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:35:13,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:35:13,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:35:13,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:35:13,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:35:13,207 INFO L87 Difference]: Start difference. First operand 596 states and 735 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-19 15:35:13,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:35:13,288 INFO L93 Difference]: Finished difference Result 1143 states and 1433 transitions. [2021-12-19 15:35:13,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 15:35:13,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 138 [2021-12-19 15:35:13,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:35:13,291 INFO L225 Difference]: With dead ends: 1143 [2021-12-19 15:35:13,291 INFO L226 Difference]: Without dead ends: 599 [2021-12-19 15:35:13,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:35:13,293 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 2 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:35:13,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 806 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:35:13,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-12-19 15:35:13,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2021-12-19 15:35:13,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 564 states have (on average 1.2092198581560283) internal successors, (682), 578 states have internal predecessors, (682), 28 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-12-19 15:35:13,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 744 transitions. [2021-12-19 15:35:13,308 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 744 transitions. Word has length 138 [2021-12-19 15:35:13,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:35:13,308 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 744 transitions. [2021-12-19 15:35:13,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-19 15:35:13,309 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 744 transitions. [2021-12-19 15:35:13,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-19 15:35:13,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:35:13,310 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:35:13,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-19 15:35:13,523 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 [2021-12-19 15:35:13,523 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:35:13,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:35:13,524 INFO L85 PathProgramCache]: Analyzing trace with hash -268398914, now seen corresponding path program 1 times [2021-12-19 15:35:13,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:35:13,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845728731] [2021-12-19 15:35:13,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:13,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:35:13,588 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:35:13,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877218826] [2021-12-19 15:35:13,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:13,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:35:13,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:35:13,590 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) [2021-12-19 15:35:13,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-19 15:35:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:35:15,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-19 15:35:15,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:35:15,651 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-19 15:35:15,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:35:15,891 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-19 15:35:15,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:35:15,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845728731] [2021-12-19 15:35:15,892 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:35:15,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877218826] [2021-12-19 15:35:15,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877218826] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:35:15,892 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:35:15,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-19 15:35:15,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976763935] [2021-12-19 15:35:15,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:35:15,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-19 15:35:15,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:35:15,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-19 15:35:15,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-19 15:35:15,893 INFO L87 Difference]: Start difference. First operand 599 states and 744 transitions. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-19 15:35:16,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:35:16,010 INFO L93 Difference]: Finished difference Result 1157 states and 1475 transitions. [2021-12-19 15:35:16,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-19 15:35:16,010 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 142 [2021-12-19 15:35:16,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:35:16,012 INFO L225 Difference]: With dead ends: 1157 [2021-12-19 15:35:16,012 INFO L226 Difference]: Without dead ends: 608 [2021-12-19 15:35:16,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-12-19 15:35:16,014 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 20 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:35:16,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1058 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:35:16,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-12-19 15:35:16,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2021-12-19 15:35:16,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 572 states have (on average 1.2132867132867133) internal successors, (694), 586 states have internal predecessors, (694), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (40), 19 states have call predecessors, (40), 28 states have call successors, (40) [2021-12-19 15:35:16,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 762 transitions. [2021-12-19 15:35:16,026 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 762 transitions. Word has length 142 [2021-12-19 15:35:16,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:35:16,026 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 762 transitions. [2021-12-19 15:35:16,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-19 15:35:16,026 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 762 transitions. [2021-12-19 15:35:16,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-19 15:35:16,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:35:16,027 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:35:16,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-19 15:35:16,243 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 [2021-12-19 15:35:16,243 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:35:16,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:35:16,244 INFO L85 PathProgramCache]: Analyzing trace with hash -150155646, now seen corresponding path program 2 times [2021-12-19 15:35:16,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:35:16,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65243063] [2021-12-19 15:35:16,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:16,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:35:16,304 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:35:16,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165196178] [2021-12-19 15:35:16,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:35:16,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:35:16,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:35:16,341 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) [2021-12-19 15:35:16,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-19 15:35:18,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:35:18,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:35:18,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-19 15:35:18,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:35:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 83 proven. 40 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-19 15:35:18,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:35:18,647 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-19 15:35:18,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:35:18,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65243063] [2021-12-19 15:35:18,648 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:35:18,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165196178] [2021-12-19 15:35:18,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165196178] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:35:18,648 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:35:18,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 15 [2021-12-19 15:35:18,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750027969] [2021-12-19 15:35:18,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:35:18,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-19 15:35:18,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:35:18,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-19 15:35:18,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-12-19 15:35:18,649 INFO L87 Difference]: Start difference. First operand 608 states and 762 transitions. Second operand has 15 states, 15 states have (on average 9.6) internal successors, (144), 15 states have internal predecessors, (144), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-19 15:35:19,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:35:19,092 INFO L93 Difference]: Finished difference Result 1214 states and 1566 transitions. [2021-12-19 15:35:19,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-19 15:35:19,092 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.6) internal successors, (144), 15 states have internal predecessors, (144), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 150 [2021-12-19 15:35:19,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:35:19,094 INFO L225 Difference]: With dead ends: 1214 [2021-12-19 15:35:19,094 INFO L226 Difference]: Without dead ends: 610 [2021-12-19 15:35:19,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2021-12-19 15:35:19,096 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 266 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-19 15:35:19,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 1846 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-19 15:35:19,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-12-19 15:35:19,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 605. [2021-12-19 15:35:19,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 569 states have (on average 1.2091388400702987) internal successors, (688), 583 states have internal predecessors, (688), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-12-19 15:35:19,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 750 transitions. [2021-12-19 15:35:19,109 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 750 transitions. Word has length 150 [2021-12-19 15:35:19,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:35:19,109 INFO L470 AbstractCegarLoop]: Abstraction has 605 states and 750 transitions. [2021-12-19 15:35:19,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.6) internal successors, (144), 15 states have internal predecessors, (144), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-19 15:35:19,109 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 750 transitions. [2021-12-19 15:35:19,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-19 15:35:19,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:35:19,110 INFO L514 BasicCegarLoop]: trace histogram [24, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:35:19,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-19 15:35:19,327 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 [2021-12-19 15:35:19,327 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:35:19,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:35:19,328 INFO L85 PathProgramCache]: Analyzing trace with hash -163132222, now seen corresponding path program 3 times [2021-12-19 15:35:19,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:35:19,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986542180] [2021-12-19 15:35:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:19,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:35:19,391 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:35:19,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118692100] [2021-12-19 15:35:19,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 15:35:19,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:35:19,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:35:19,392 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) [2021-12-19 15:35:19,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-19 15:35:21,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-19 15:35:21,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:35:21,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 15:35:21,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:35:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-19 15:35:21,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:35:21,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:35:21,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986542180] [2021-12-19 15:35:21,273 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:35:21,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118692100] [2021-12-19 15:35:21,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118692100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:35:21,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:35:21,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 15:35:21,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564187708] [2021-12-19 15:35:21,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:35:21,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-19 15:35:21,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:35:21,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 15:35:21,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-19 15:35:21,276 INFO L87 Difference]: Start difference. First operand 605 states and 750 transitions. Second operand has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-19 15:35:21,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:35:21,350 INFO L93 Difference]: Finished difference Result 605 states and 750 transitions. [2021-12-19 15:35:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-19 15:35:21,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 162 [2021-12-19 15:35:21,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:35:21,352 INFO L225 Difference]: With dead ends: 605 [2021-12-19 15:35:21,352 INFO L226 Difference]: Without dead ends: 604 [2021-12-19 15:35:21,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-19 15:35:21,353 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 341 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:35:21,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 1316 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:35:21,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-12-19 15:35:21,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2021-12-19 15:35:21,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 569 states have (on average 1.2056239015817223) internal successors, (686), 582 states have internal predecessors, (686), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-12-19 15:35:21,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 748 transitions. [2021-12-19 15:35:21,366 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 748 transitions. Word has length 162 [2021-12-19 15:35:21,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:35:21,367 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 748 transitions. [2021-12-19 15:35:21,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-19 15:35:21,367 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 748 transitions. [2021-12-19 15:35:21,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-12-19 15:35:21,370 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:35:21,370 INFO L514 BasicCegarLoop]: trace histogram [24, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:35:21,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-19 15:35:21,582 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 [2021-12-19 15:35:21,582 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:35:21,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:35:21,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1007231856, now seen corresponding path program 1 times [2021-12-19 15:35:21,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:35:21,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441843852] [2021-12-19 15:35:21,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:21,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:35:21,839 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:35:21,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819368564] [2021-12-19 15:35:21,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:21,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:35:21,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:35:21,841 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) [2021-12-19 15:35:21,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-19 15:35:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:35:24,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 7364 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-19 15:35:24,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:35:25,154 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-19 15:35:25,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:35:25,872 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-19 15:35:25,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:35:25,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441843852] [2021-12-19 15:35:25,872 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:35:25,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819368564] [2021-12-19 15:35:25,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819368564] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:35:25,872 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:35:25,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-19 15:35:25,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533290386] [2021-12-19 15:35:25,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:35:25,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-19 15:35:25,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:35:25,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-19 15:35:25,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-12-19 15:35:25,874 INFO L87 Difference]: Start difference. First operand 604 states and 748 transitions. Second operand has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-19 15:35:26,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:35:26,025 INFO L93 Difference]: Finished difference Result 816 states and 1023 transitions. [2021-12-19 15:35:26,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-19 15:35:26,026 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 361 [2021-12-19 15:35:26,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:35:26,028 INFO L225 Difference]: With dead ends: 816 [2021-12-19 15:35:26,028 INFO L226 Difference]: Without dead ends: 815 [2021-12-19 15:35:26,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-12-19 15:35:26,029 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 704 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:35:26,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [740 Valid, 1813 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:35:26,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2021-12-19 15:35:26,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 603. [2021-12-19 15:35:26,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 569 states have (on average 1.2038664323374342) internal successors, (685), 581 states have internal predecessors, (685), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2021-12-19 15:35:26,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 747 transitions. [2021-12-19 15:35:26,047 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 747 transitions. Word has length 361 [2021-12-19 15:35:26,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:35:26,048 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 747 transitions. [2021-12-19 15:35:26,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-19 15:35:26,048 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 747 transitions. [2021-12-19 15:35:26,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-12-19 15:35:26,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:35:26,051 INFO L514 BasicCegarLoop]: trace histogram [24, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:35:26,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-19 15:35:26,274 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 [2021-12-19 15:35:26,274 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:35:26,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:35:26,275 INFO L85 PathProgramCache]: Analyzing trace with hash -806794526, now seen corresponding path program 1 times [2021-12-19 15:35:26,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:35:26,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75709358] [2021-12-19 15:35:26,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:26,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:35:26,542 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:35:26,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760691373] [2021-12-19 15:35:26,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:26,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:35:26,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:35:26,543 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) [2021-12-19 15:35:26,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-19 15:35:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:35:29,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 7388 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-19 15:35:29,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:35:30,169 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-19 15:35:30,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:35:30,724 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-19 15:35:30,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:35:30,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75709358] [2021-12-19 15:35:30,725 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:35:30,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760691373] [2021-12-19 15:35:30,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760691373] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:35:30,725 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:35:30,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-12-19 15:35:30,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000646064] [2021-12-19 15:35:30,725 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:35:30,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-19 15:35:30,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:35:30,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-19 15:35:30,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-12-19 15:35:30,727 INFO L87 Difference]: Start difference. First operand 603 states and 747 transitions. Second operand has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-19 15:35:30,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:35:30,995 INFO L93 Difference]: Finished difference Result 1368 states and 1699 transitions. [2021-12-19 15:35:30,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-19 15:35:30,995 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 366 [2021-12-19 15:35:30,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:35:30,999 INFO L225 Difference]: With dead ends: 1368 [2021-12-19 15:35:31,000 INFO L226 Difference]: Without dead ends: 1335 [2021-12-19 15:35:31,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-12-19 15:35:31,001 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 2346 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:35:31,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2384 Valid, 2650 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:35:31,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-12-19 15:35:31,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1335. [2021-12-19 15:35:31,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 1277 states have (on average 1.1942051683633517) internal successors, (1525), 1289 states have internal predecessors, (1525), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 43 states have call predecessors, (66), 52 states have call successors, (66) [2021-12-19 15:35:31,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1643 transitions. [2021-12-19 15:35:31,029 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1643 transitions. Word has length 366 [2021-12-19 15:35:31,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:35:31,030 INFO L470 AbstractCegarLoop]: Abstraction has 1335 states and 1643 transitions. [2021-12-19 15:35:31,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-19 15:35:31,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1643 transitions. [2021-12-19 15:35:31,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2021-12-19 15:35:31,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:35:31,041 INFO L514 BasicCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:35:31,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-19 15:35:31,255 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 [2021-12-19 15:35:31,255 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)] === [2021-12-19 15:35:31,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:35:31,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1035654022, now seen corresponding path program 2 times [2021-12-19 15:35:31,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:35:31,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427445261] [2021-12-19 15:35:31,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:31,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:35:31,922 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:35:31,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [865922477] [2021-12-19 15:35:31,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:35:31,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:35:31,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:35:31,923 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) [2021-12-19 15:35:31,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-19 15:35:35,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-19 15:35:35,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:35:35,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 15:35:35,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:35:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2521 trivial. 0 not checked. [2021-12-19 15:35:37,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:35:37,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:35:37,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427445261] [2021-12-19 15:35:37,002 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:35:37,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865922477] [2021-12-19 15:35:37,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865922477] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:35:37,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:35:37,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 15:35:37,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319504640] [2021-12-19 15:35:37,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:35:37,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:35:37,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:35:37,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:35:37,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:35:37,003 INFO L87 Difference]: Start difference. First operand 1335 states and 1643 transitions. Second operand has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-19 15:35:37,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:35:37,041 INFO L93 Difference]: Finished difference Result 1361 states and 1689 transitions. [2021-12-19 15:35:37,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 15:35:37,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 774 [2021-12-19 15:35:37,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:35:37,047 INFO L225 Difference]: With dead ends: 1361 [2021-12-19 15:35:37,047 INFO L226 Difference]: Without dead ends: 1360 [2021-12-19 15:35:37,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:35:37,048 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 109 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:35:37,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 570 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:35:37,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2021-12-19 15:35:37,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1337. [2021-12-19 15:35:37,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1279 states have (on average 1.1939014855355747) internal successors, (1527), 1291 states have internal predecessors, (1527), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 43 states have call predecessors, (66), 52 states have call successors, (66) [2021-12-19 15:35:37,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1645 transitions. [2021-12-19 15:35:37,076 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1645 transitions. Word has length 774 [2021-12-19 15:35:37,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:35:37,077 INFO L470 AbstractCegarLoop]: Abstraction has 1337 states and 1645 transitions. [2021-12-19 15:35:37,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-19 15:35:37,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1645 transitions. [2021-12-19 15:35:37,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2021-12-19 15:35:37,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:35:37,090 INFO L514 BasicCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:35:37,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-19 15:35:37,315 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 [2021-12-19 15:35:37,315 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:35:37,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:35:37,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2040504391, now seen corresponding path program 1 times [2021-12-19 15:35:37,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:35:37,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245003550] [2021-12-19 15:35:37,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:37,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:35:38,217 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:35:38,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964947503] [2021-12-19 15:35:38,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:38,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:35:38,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:35:38,226 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) [2021-12-19 15:35:38,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-19 15:35:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:35:45,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 18989 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-19 15:35:45,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:35:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-19 15:35:46,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:35:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-19 15:35:47,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:35:47,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245003550] [2021-12-19 15:35:47,981 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:35:47,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964947503] [2021-12-19 15:35:47,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964947503] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:35:47,981 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:35:47,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2021-12-19 15:35:47,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032593756] [2021-12-19 15:35:47,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:35:47,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-19 15:35:47,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:35:47,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-19 15:35:47,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-12-19 15:35:47,984 INFO L87 Difference]: Start difference. First operand 1337 states and 1645 transitions. Second operand has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-19 15:35:48,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:35:48,332 INFO L93 Difference]: Finished difference Result 1921 states and 2374 transitions. [2021-12-19 15:35:48,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-19 15:35:48,336 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 775 [2021-12-19 15:35:48,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:35:48,341 INFO L225 Difference]: With dead ends: 1921 [2021-12-19 15:35:48,341 INFO L226 Difference]: Without dead ends: 1886 [2021-12-19 15:35:48,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1557 GetRequests, 1528 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-12-19 15:35:48,343 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 2723 mSDsluCounter, 3699 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2775 SdHoareTripleChecker+Valid, 4044 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-19 15:35:48,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2775 Valid, 4044 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-19 15:35:48,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2021-12-19 15:35:48,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1886. [2021-12-19 15:35:48,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1810 states have (on average 1.1917127071823204) internal successors, (2157), 1822 states have internal predecessors, (2157), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 61 states have call predecessors, (90), 70 states have call successors, (90) [2021-12-19 15:35:48,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 2317 transitions. [2021-12-19 15:35:48,379 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 2317 transitions. Word has length 775 [2021-12-19 15:35:48,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:35:48,379 INFO L470 AbstractCegarLoop]: Abstraction has 1886 states and 2317 transitions. [2021-12-19 15:35:48,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-19 15:35:48,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 2317 transitions. [2021-12-19 15:35:48,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2021-12-19 15:35:48,391 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:35:48,391 INFO L514 BasicCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:35:48,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-19 15:35:48,619 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 [2021-12-19 15:35:48,620 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:35:48,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:35:48,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1548217332, now seen corresponding path program 2 times [2021-12-19 15:35:48,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:35:48,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960760159] [2021-12-19 15:35:48,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:48,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:35:49,650 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:35:49,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250075153] [2021-12-19 15:35:49,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:35:49,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:35:49,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:35:49,652 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) [2021-12-19 15:35:49,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-19 15:35:55,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-19 15:35:55,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:35:55,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 15:35:55,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:35:57,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-19 15:35:57,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:35:57,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:35:57,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960760159] [2021-12-19 15:35:57,205 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:35:57,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250075153] [2021-12-19 15:35:57,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250075153] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:35:57,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:35:57,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 15:35:57,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368272836] [2021-12-19 15:35:57,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:35:57,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 15:35:57,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:35:57,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 15:35:57,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 15:35:57,207 INFO L87 Difference]: Start difference. First operand 1886 states and 2317 transitions. Second operand has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-19 15:35:57,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:35:57,276 INFO L93 Difference]: Finished difference Result 1886 states and 2317 transitions. [2021-12-19 15:35:57,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 15:35:57,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1081 [2021-12-19 15:35:57,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:35:57,282 INFO L225 Difference]: With dead ends: 1886 [2021-12-19 15:35:57,282 INFO L226 Difference]: Without dead ends: 1885 [2021-12-19 15:35:57,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1078 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:35:57,283 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 144 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:35:57,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 478 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:35:57,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2021-12-19 15:35:57,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1885. [2021-12-19 15:35:57,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1810 states have (on average 1.1911602209944752) internal successors, (2156), 1821 states have internal predecessors, (2156), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 61 states have call predecessors, (90), 70 states have call successors, (90) [2021-12-19 15:35:57,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2316 transitions. [2021-12-19 15:35:57,315 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2316 transitions. Word has length 1081 [2021-12-19 15:35:57,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:35:57,316 INFO L470 AbstractCegarLoop]: Abstraction has 1885 states and 2316 transitions. [2021-12-19 15:35:57,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-19 15:35:57,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2316 transitions. [2021-12-19 15:35:57,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1093 [2021-12-19 15:35:57,326 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:35:57,327 INFO L514 BasicCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:35:57,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-19 15:35:57,543 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 [2021-12-19 15:35:57,543 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)] === [2021-12-19 15:35:57,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:35:57,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1705709209, now seen corresponding path program 1 times [2021-12-19 15:35:57,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:35:57,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051536670] [2021-12-19 15:35:57,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:57,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:35:58,705 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:35:58,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073918580] [2021-12-19 15:35:58,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:35:58,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:35:58,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:35:58,707 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) [2021-12-19 15:35:58,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-19 15:36:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:36:09,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 27724 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 15:36:09,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:36:11,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-19 15:36:11,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:36:13,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-19 15:36:13,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:36:13,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051536670] [2021-12-19 15:36:13,017 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:36:13,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073918580] [2021-12-19 15:36:13,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073918580] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:36:13,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:36:13,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-12-19 15:36:13,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411877477] [2021-12-19 15:36:13,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:36:13,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-19 15:36:13,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:36:13,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-19 15:36:13,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-19 15:36:13,020 INFO L87 Difference]: Start difference. First operand 1885 states and 2316 transitions. Second operand has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-19 15:36:13,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:36:13,278 INFO L93 Difference]: Finished difference Result 1977 states and 2467 transitions. [2021-12-19 15:36:13,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-19 15:36:13,284 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 1092 [2021-12-19 15:36:13,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:36:13,290 INFO L225 Difference]: With dead ends: 1977 [2021-12-19 15:36:13,291 INFO L226 Difference]: Without dead ends: 1976 [2021-12-19 15:36:13,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2189 GetRequests, 2174 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2021-12-19 15:36:13,292 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 632 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-19 15:36:13,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 1322 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-19 15:36:13,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2021-12-19 15:36:13,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1975. [2021-12-19 15:36:13,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1867 states have (on average 1.2013926084627744) internal successors, (2243), 1908 states have internal predecessors, (2243), 100 states have call successors, (100), 6 states have call predecessors, (100), 7 states have return successors, (120), 64 states have call predecessors, (120), 100 states have call successors, (120) [2021-12-19 15:36:13,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 2463 transitions. [2021-12-19 15:36:13,340 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 2463 transitions. Word has length 1092 [2021-12-19 15:36:13,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:36:13,340 INFO L470 AbstractCegarLoop]: Abstraction has 1975 states and 2463 transitions. [2021-12-19 15:36:13,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 30.666666666666668) internal successors, (276), 10 states have internal predecessors, (276), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-19 15:36:13,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 2463 transitions. [2021-12-19 15:36:13,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1129 [2021-12-19 15:36:13,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:36:13,354 INFO L514 BasicCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:36:13,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-19 15:36:13,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:36:13,572 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:36:13,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:36:13,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1126992129, now seen corresponding path program 2 times [2021-12-19 15:36:13,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:36:13,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888687768] [2021-12-19 15:36:13,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:36:13,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:36:14,818 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:36:14,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090732434] [2021-12-19 15:36:14,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:36:14,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:36:14,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:36:14,820 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:36:14,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-19 15:36:27,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:36:27,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:36:27,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 27832 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-19 15:36:27,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:36:28,988 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-19 15:36:28,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:36:30,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 4984 trivial. 0 not checked. [2021-12-19 15:36:30,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:36:30,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888687768] [2021-12-19 15:36:30,743 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:36:30,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090732434] [2021-12-19 15:36:30,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090732434] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:36:30,743 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:36:30,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-12-19 15:36:30,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196177350] [2021-12-19 15:36:30,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:36:30,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-19 15:36:30,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:36:30,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-19 15:36:30,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-12-19 15:36:30,745 INFO L87 Difference]: Start difference. First operand 1975 states and 2463 transitions. Second operand has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2021-12-19 15:36:31,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:36:31,643 INFO L93 Difference]: Finished difference Result 2157 states and 2764 transitions. [2021-12-19 15:36:31,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-19 15:36:31,644 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 1128 [2021-12-19 15:36:31,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:36:31,650 INFO L225 Difference]: With dead ends: 2157 [2021-12-19 15:36:31,650 INFO L226 Difference]: Without dead ends: 2156 [2021-12-19 15:36:31,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2273 GetRequests, 2234 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640 [2021-12-19 15:36:31,651 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 1133 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-19 15:36:31,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1143 Valid, 1068 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-19 15:36:31,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2021-12-19 15:36:31,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 2155. [2021-12-19 15:36:31,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2155 states, 1981 states have (on average 1.220090863200404) internal successors, (2417), 2082 states have internal predecessors, (2417), 160 states have call successors, (160), 12 states have call predecessors, (160), 13 states have return successors, (180), 70 states have call predecessors, (180), 160 states have call successors, (180) [2021-12-19 15:36:31,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2757 transitions. [2021-12-19 15:36:31,701 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2757 transitions. Word has length 1128 [2021-12-19 15:36:31,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:36:31,702 INFO L470 AbstractCegarLoop]: Abstraction has 2155 states and 2757 transitions. [2021-12-19 15:36:31,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 15.571428571428571) internal successors, (327), 22 states have internal predecessors, (327), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2021-12-19 15:36:31,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2757 transitions. [2021-12-19 15:36:31,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1201 [2021-12-19 15:36:31,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:36:31,715 INFO L514 BasicCegarLoop]: trace histogram [24, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:36:31,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-19 15:36:31,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-19 15:36:31,940 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:36:31,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:36:31,940 INFO L85 PathProgramCache]: Analyzing trace with hash -124501551, now seen corresponding path program 3 times [2021-12-19 15:36:31,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:36:31,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492033761] [2021-12-19 15:36:31,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:36:31,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:36:33,168 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:36:33,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694944488] [2021-12-19 15:36:33,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 15:36:33,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:36:33,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:36:33,170 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:36:33,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-19 15:36:43,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-19 15:36:43,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:36:43,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 2990 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 15:36:43,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:36:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5520 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 5419 trivial. 0 not checked. [2021-12-19 15:36:44,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:36:44,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:36:44,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492033761] [2021-12-19 15:36:44,349 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:36:44,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694944488] [2021-12-19 15:36:44,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694944488] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:36:44,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:36:44,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 15:36:44,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796080804] [2021-12-19 15:36:44,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:36:44,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-19 15:36:44,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:36:44,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-19 15:36:44,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-19 15:36:44,351 INFO L87 Difference]: Start difference. First operand 2155 states and 2757 transitions. Second operand has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-19 15:36:44,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:36:44,691 INFO L93 Difference]: Finished difference Result 2472 states and 3244 transitions. [2021-12-19 15:36:44,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-19 15:36:44,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1200 [2021-12-19 15:36:44,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:36:44,701 INFO L225 Difference]: With dead ends: 2472 [2021-12-19 15:36:44,701 INFO L226 Difference]: Without dead ends: 2471 [2021-12-19 15:36:44,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1203 GetRequests, 1198 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-19 15:36:44,703 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 464 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:36:44,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 526 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:36:44,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2021-12-19 15:36:44,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2398. [2021-12-19 15:36:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2152 states have (on average 1.2444237918215613) internal successors, (2678), 2307 states have internal predecessors, (2678), 223 states have call successors, (223), 21 states have call predecessors, (223), 22 states have return successors, (243), 79 states have call predecessors, (243), 223 states have call successors, (243) [2021-12-19 15:36:44,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 3144 transitions. [2021-12-19 15:36:44,788 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 3144 transitions. Word has length 1200 [2021-12-19 15:36:44,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:36:44,789 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 3144 transitions. [2021-12-19 15:36:44,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 36.5) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-19 15:36:44,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 3144 transitions. [2021-12-19 15:36:44,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1202 [2021-12-19 15:36:44,803 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:36:44,803 INFO L514 BasicCegarLoop]: trace histogram [24, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:36:44,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-19 15:36:45,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-19 15:36:45,023 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:36:45,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:36:45,024 INFO L85 PathProgramCache]: Analyzing trace with hash -466116856, now seen corresponding path program 1 times [2021-12-19 15:36:45,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:36:45,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517788884] [2021-12-19 15:36:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:36:45,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:36:46,220 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:36:46,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086424716] [2021-12-19 15:36:46,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:36:46,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:36:46,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:36:46,221 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:36:46,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-19 15:37:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:37:00,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 28050 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-19 15:37:00,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:37:02,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5511 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-19 15:37:02,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:37:04,426 INFO L134 CoverageAnalysis]: Checked inductivity of 5511 backedges. 0 proven. 371 refuted. 0 times theorem prover too weak. 5140 trivial. 0 not checked. [2021-12-19 15:37:04,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:37:04,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517788884] [2021-12-19 15:37:04,426 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:37:04,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086424716] [2021-12-19 15:37:04,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086424716] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:37:04,427 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:37:04,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 45 [2021-12-19 15:37:04,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178908201] [2021-12-19 15:37:04,427 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:37:04,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-19 15:37:04,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:37:04,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-19 15:37:04,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-12-19 15:37:04,430 INFO L87 Difference]: Start difference. First operand 2398 states and 3144 transitions. Second operand has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2021-12-19 15:37:06,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:37:06,691 INFO L93 Difference]: Finished difference Result 3115 states and 4312 transitions. [2021-12-19 15:37:06,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-12-19 15:37:06,692 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) Word has length 1201 [2021-12-19 15:37:06,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:37:06,724 INFO L225 Difference]: With dead ends: 3115 [2021-12-19 15:37:06,724 INFO L226 Difference]: Without dead ends: 3114 [2021-12-19 15:37:06,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2443 GetRequests, 2356 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2529, Invalid=5303, Unknown=0, NotChecked=0, Total=7832 [2021-12-19 15:37:06,728 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 3731 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 1753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3741 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 3775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1753 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-19 15:37:06,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3741 Valid, 1382 Invalid, 3775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1753 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-19 15:37:06,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2021-12-19 15:37:06,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 3094. [2021-12-19 15:37:06,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3094 states, 2608 states have (on average 1.2937116564417177) internal successors, (3374), 2967 states have internal predecessors, (3374), 439 states have call successors, (439), 45 states have call predecessors, (439), 46 states have return successors, (459), 103 states have call predecessors, (459), 439 states have call successors, (459) [2021-12-19 15:37:06,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 4272 transitions. [2021-12-19 15:37:06,836 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 4272 transitions. Word has length 1201 [2021-12-19 15:37:06,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:37:06,837 INFO L470 AbstractCegarLoop]: Abstraction has 3094 states and 4272 transitions. [2021-12-19 15:37:06,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 9.577777777777778) internal successors, (431), 46 states have internal predecessors, (431), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2021-12-19 15:37:06,837 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 4272 transitions. [2021-12-19 15:37:06,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1346 [2021-12-19 15:37:06,855 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:37:06,855 INFO L514 BasicCegarLoop]: trace histogram [24, 23, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:37:06,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-12-19 15:37:07,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:37:07,080 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:37:07,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:37:07,080 INFO L85 PathProgramCache]: Analyzing trace with hash 852316520, now seen corresponding path program 2 times [2021-12-19 15:37:07,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:37:07,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462529735] [2021-12-19 15:37:07,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:37:07,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:37:08,143 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:37:08,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472875893] [2021-12-19 15:37:08,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:37:08,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:37:08,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:37:08,144 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:37:08,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-19 15:37:23,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:37:23,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:37:23,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 28482 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-19 15:37:23,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:37:26,075 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-19 15:37:26,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:37:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 7755 backedges. 0 proven. 1871 refuted. 0 times theorem prover too weak. 5884 trivial. 0 not checked. [2021-12-19 15:37:29,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:37:29,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462529735] [2021-12-19 15:37:29,314 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:37:29,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472875893] [2021-12-19 15:37:29,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472875893] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:37:29,314 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:37:29,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47] total 93 [2021-12-19 15:37:29,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936775170] [2021-12-19 15:37:29,314 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:37:29,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-12-19 15:37:29,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:37:29,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-12-19 15:37:29,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-12-19 15:37:29,361 INFO L87 Difference]: Start difference. First operand 3094 states and 4272 transitions. Second operand has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) [2021-12-19 15:37:36,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:37:36,623 INFO L93 Difference]: Finished difference Result 4507 states and 6580 transitions. [2021-12-19 15:37:36,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2021-12-19 15:37:36,631 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) Word has length 1345 [2021-12-19 15:37:36,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:37:36,647 INFO L225 Difference]: With dead ends: 4507 [2021-12-19 15:37:36,652 INFO L226 Difference]: Without dead ends: 4506 [2021-12-19 15:37:36,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2779 GetRequests, 2596 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7507 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=10809, Invalid=23231, Unknown=0, NotChecked=0, Total=34040 [2021-12-19 15:37:36,660 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 7913 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 5208 mSolverCounterSat, 4105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7923 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 9313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4105 IncrementalHoareTripleChecker+Valid, 5208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-19 15:37:36,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7923 Valid, 2065 Invalid, 9313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4105 Valid, 5208 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-19 15:37:36,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4506 states. [2021-12-19 15:37:36,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4506 to 4486. [2021-12-19 15:37:36,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4486 states, 3520 states have (on average 1.3539772727272728) internal successors, (4766), 4287 states have internal predecessors, (4766), 871 states have call successors, (871), 93 states have call predecessors, (871), 94 states have return successors, (891), 151 states have call predecessors, (891), 871 states have call successors, (891) [2021-12-19 15:37:36,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 6528 transitions. [2021-12-19 15:37:36,800 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 6528 transitions. Word has length 1345 [2021-12-19 15:37:36,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:37:36,801 INFO L470 AbstractCegarLoop]: Abstraction has 4486 states and 6528 transitions. [2021-12-19 15:37:36,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 6.827956989247312) internal successors, (635), 94 states have internal predecessors, (635), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) [2021-12-19 15:37:36,801 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 6528 transitions. [2021-12-19 15:37:36,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1634 [2021-12-19 15:37:36,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:37:36,829 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:37:36,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-12-19 15:37:37,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:37:37,043 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:37:37,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:37:37,044 INFO L85 PathProgramCache]: Analyzing trace with hash -350980568, now seen corresponding path program 3 times [2021-12-19 15:37:37,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:37:37,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177401335] [2021-12-19 15:37:37,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:37:37,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:37:38,410 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:37:38,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784791035] [2021-12-19 15:37:38,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 15:37:38,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:37:38,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:37:38,411 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:37:38,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-19 15:37:53,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-19 15:37:53,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:37:53,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 15:37:53,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:37:55,053 INFO L134 CoverageAnalysis]: Checked inductivity of 17427 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 16975 trivial. 0 not checked. [2021-12-19 15:37:55,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:37:55,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:37:55,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177401335] [2021-12-19 15:37:55,053 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:37:55,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784791035] [2021-12-19 15:37:55,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784791035] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:37:55,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:37:55,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 15:37:55,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877363824] [2021-12-19 15:37:55,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:37:55,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-19 15:37:55,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:37:55,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 15:37:55,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-19 15:37:55,056 INFO L87 Difference]: Start difference. First operand 4486 states and 6528 transitions. Second operand has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-19 15:37:55,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:37:55,438 INFO L93 Difference]: Finished difference Result 7361 states and 11014 transitions. [2021-12-19 15:37:55,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-19 15:37:55,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1633 [2021-12-19 15:37:55,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:37:55,455 INFO L225 Difference]: With dead ends: 7361 [2021-12-19 15:37:55,456 INFO L226 Difference]: Without dead ends: 7360 [2021-12-19 15:37:55,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1641 GetRequests, 1632 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-12-19 15:37:55,458 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 282 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:37:55,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 716 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:37:55,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7360 states. [2021-12-19 15:37:55,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7360 to 6897. [2021-12-19 15:37:55,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6897 states, 5227 states have (on average 1.4105605509852688) internal successors, (7373), 6519 states have internal predecessors, (7373), 1486 states have call successors, (1486), 182 states have call predecessors, (1486), 183 states have return successors, (1506), 240 states have call predecessors, (1506), 1486 states have call successors, (1506) [2021-12-19 15:37:55,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6897 states to 6897 states and 10365 transitions. [2021-12-19 15:37:55,825 INFO L78 Accepts]: Start accepts. Automaton has 6897 states and 10365 transitions. Word has length 1633 [2021-12-19 15:37:55,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:37:55,829 INFO L470 AbstractCegarLoop]: Abstraction has 6897 states and 10365 transitions. [2021-12-19 15:37:55,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-19 15:37:55,829 INFO L276 IsEmpty]: Start isEmpty. Operand 6897 states and 10365 transitions. [2021-12-19 15:37:55,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1636 [2021-12-19 15:37:55,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:37:55,865 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 44, 44, 44, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:37:55,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-12-19 15:37:56,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-19 15:37:56,092 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:37:56,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:37:56,092 INFO L85 PathProgramCache]: Analyzing trace with hash 28478646, now seen corresponding path program 1 times [2021-12-19 15:37:56,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:37:56,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994216528] [2021-12-19 15:37:56,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:37:56,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:37:57,364 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:37:57,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718962834] [2021-12-19 15:37:57,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:37:57,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:37:57,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:37:57,365 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:37:57,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-19 15:38:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:38:15,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 29350 conjuncts, 95 conjunts are in the unsatisfiable core [2021-12-19 15:38:15,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:38:19,593 INFO L134 CoverageAnalysis]: Checked inductivity of 17384 backedges. 0 proven. 12424 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-19 15:38:19,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:38:26,922 INFO L134 CoverageAnalysis]: Checked inductivity of 17384 backedges. 0 proven. 8284 refuted. 0 times theorem prover too weak. 9100 trivial. 0 not checked. [2021-12-19 15:38:26,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:38:26,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994216528] [2021-12-19 15:38:26,923 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:38:26,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718962834] [2021-12-19 15:38:26,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718962834] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:38:26,923 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:38:26,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 95] total 189 [2021-12-19 15:38:26,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852559572] [2021-12-19 15:38:26,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:38:26,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-12-19 15:38:26,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:38:26,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-12-19 15:38:26,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2021-12-19 15:38:26,934 INFO L87 Difference]: Start difference. First operand 6897 states and 10365 transitions. Second operand has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) [2021-12-19 15:38:55,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:38:55,708 INFO L93 Difference]: Finished difference Result 12329 states and 19129 transitions. [2021-12-19 15:38:55,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2021-12-19 15:38:55,709 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) Word has length 1635 [2021-12-19 15:38:55,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:38:55,744 INFO L225 Difference]: With dead ends: 12329 [2021-12-19 15:38:55,744 INFO L226 Difference]: Without dead ends: 12328 [2021-12-19 15:38:55,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3455 GetRequests, 3080 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32251 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=44649, Invalid=97103, Unknown=0, NotChecked=0, Total=141752 [2021-12-19 15:38:55,760 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 16914 mSDsluCounter, 3386 mSDsCounter, 0 mSdLazyCounter, 11912 mSolverCounterSat, 9185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16924 SdHoareTripleChecker+Valid, 3642 SdHoareTripleChecker+Invalid, 21097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9185 IncrementalHoareTripleChecker+Valid, 11912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:38:55,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16924 Valid, 3642 Invalid, 21097 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9185 Valid, 11912 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-12-19 15:38:55,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12328 states. [2021-12-19 15:38:56,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12328 to 12273. [2021-12-19 15:38:56,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12273 states, 8875 states have (on average 1.4581408450704225) internal successors, (12941), 11559 states have internal predecessors, (12941), 3022 states have call successors, (3022), 374 states have call predecessors, (3022), 375 states have return successors, (3042), 432 states have call predecessors, (3042), 3022 states have call successors, (3042) [2021-12-19 15:38:56,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12273 states to 12273 states and 19005 transitions. [2021-12-19 15:38:56,282 INFO L78 Accepts]: Start accepts. Automaton has 12273 states and 19005 transitions. Word has length 1635 [2021-12-19 15:38:56,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:38:56,283 INFO L470 AbstractCegarLoop]: Abstraction has 12273 states and 19005 transitions. [2021-12-19 15:38:56,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 5.5396825396825395) internal successors, (1047), 190 states have internal predecessors, (1047), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) [2021-12-19 15:38:56,283 INFO L276 IsEmpty]: Start isEmpty. Operand 12273 states and 19005 transitions. [2021-12-19 15:38:56,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2212 [2021-12-19 15:38:56,338 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:38:56,339 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 94, 94, 92, 92, 92, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:38:56,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-12-19 15:38:56,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-19 15:38:56,548 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:38:56,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:38:56,548 INFO L85 PathProgramCache]: Analyzing trace with hash 2122544694, now seen corresponding path program 2 times [2021-12-19 15:38:56,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:38:56,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204137368] [2021-12-19 15:38:56,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:38:56,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:38:57,960 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:38:57,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [848536718] [2021-12-19 15:38:57,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 15:38:57,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:38:57,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:38:57,962 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:38:57,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-19 15:39:17,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 15:39:17,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:39:17,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 31078 conjuncts, 191 conjunts are in the unsatisfiable core [2021-12-19 15:39:17,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:39:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 57416 backedges. 0 proven. 52456 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-19 15:39:28,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:39:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 57416 backedges. 0 proven. 34972 refuted. 0 times theorem prover too weak. 22444 trivial. 0 not checked. [2021-12-19 15:39:52,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:39:52,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204137368] [2021-12-19 15:39:52,019 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:39:52,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848536718] [2021-12-19 15:39:52,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848536718] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:39:52,019 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:39:52,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 191] total 381 [2021-12-19 15:39:52,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749770369] [2021-12-19 15:39:52,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:39:52,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-12-19 15:39:52,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:39:52,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-12-19 15:39:52,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542 [2021-12-19 15:39:52,036 INFO L87 Difference]: Start difference. First operand 12273 states and 19005 transitions. Second operand has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) [2021-12-19 15:43:23,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:43:23,880 INFO L93 Difference]: Finished difference Result 23081 states and 36457 transitions. [2021-12-19 15:43:23,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 572 states. [2021-12-19 15:43:23,881 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) Word has length 2211 [2021-12-19 15:43:23,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:43:23,946 INFO L225 Difference]: With dead ends: 23081 [2021-12-19 15:43:23,946 INFO L226 Difference]: Without dead ends: 23080 [2021-12-19 15:43:23,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4799 GetRequests, 4040 SyntacticMatches, 0 SemanticMatches, 759 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133579 ImplicationChecksByTransitivity, 67.8s TimeCoverageRelationStatistics Valid=181449, Invalid=396911, Unknown=0, NotChecked=0, Total=578360 [2021-12-19 15:43:23,987 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 40113 mSDsluCounter, 7250 mSDsCounter, 0 mSdLazyCounter, 26736 mSolverCounterSat, 23916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40123 SdHoareTripleChecker+Valid, 7506 SdHoareTripleChecker+Invalid, 50652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 23916 IncrementalHoareTripleChecker+Valid, 26736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2021-12-19 15:43:23,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40123 Valid, 7506 Invalid, 50652 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [23916 Valid, 26736 Invalid, 0 Unknown, 0 Unchecked, 17.5s Time] [2021-12-19 15:43:24,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23080 states. [2021-12-19 15:43:24,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23080 to 23025. [2021-12-19 15:43:24,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23025 states, 16171 states have (on average 1.48889988250572) internal successors, (24077), 21639 states have internal predecessors, (24077), 6094 states have call successors, (6094), 758 states have call predecessors, (6094), 759 states have return successors, (6114), 816 states have call predecessors, (6114), 6094 states have call successors, (6114) [2021-12-19 15:43:24,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23025 states to 23025 states and 36285 transitions. [2021-12-19 15:43:25,000 INFO L78 Accepts]: Start accepts. Automaton has 23025 states and 36285 transitions. Word has length 2211 [2021-12-19 15:43:25,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:43:25,001 INFO L470 AbstractCegarLoop]: Abstraction has 23025 states and 36285 transitions. [2021-12-19 15:43:25,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 4.889763779527559) internal successors, (1863), 382 states have internal predecessors, (1863), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) [2021-12-19 15:43:25,002 INFO L276 IsEmpty]: Start isEmpty. Operand 23025 states and 36285 transitions. [2021-12-19 15:43:25,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3364 [2021-12-19 15:43:25,113 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:43:25,114 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 190, 190, 190, 188, 188, 188, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:43:25,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-19 15:43:25,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-19 15:43:25,314 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:43:25,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:43:25,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1562293962, now seen corresponding path program 3 times [2021-12-19 15:43:25,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:43:25,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547000213] [2021-12-19 15:43:25,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:43:25,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:43:26,630 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:43:26,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023787884] [2021-12-19 15:43:26,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 15:43:26,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:43:26,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:43:26,632 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:43:27,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-19 15:43:44,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-19 15:43:44,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 15:43:44,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 2994 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 15:43:44,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:43:47,900 INFO L134 CoverageAnalysis]: Checked inductivity of 220424 backedges. 1893 proven. 0 refuted. 0 times theorem prover too weak. 218531 trivial. 0 not checked. [2021-12-19 15:43:47,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 15:43:47,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:43:47,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547000213] [2021-12-19 15:43:47,901 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:43:47,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023787884] [2021-12-19 15:43:47,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023787884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:43:47,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:43:47,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 15:43:47,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989205507] [2021-12-19 15:43:47,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:43:47,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-19 15:43:47,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:43:47,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 15:43:47,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-19 15:43:47,905 INFO L87 Difference]: Start difference. First operand 23025 states and 36285 transitions. Second operand has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-19 15:43:49,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:43:49,433 INFO L93 Difference]: Finished difference Result 45979 states and 72018 transitions. [2021-12-19 15:43:49,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-19 15:43:49,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 3363 [2021-12-19 15:43:49,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:43:49,567 INFO L225 Difference]: With dead ends: 45979 [2021-12-19 15:43:49,568 INFO L226 Difference]: Without dead ends: 45978 [2021-12-19 15:43:49,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3371 GetRequests, 3362 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-12-19 15:43:49,589 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 499 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 15:43:49,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 699 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 15:43:49,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45978 states. [2021-12-19 15:43:51,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45978 to 37513. [2021-12-19 15:43:51,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37513 states, 26909 states have (on average 1.5037719722026088) internal successors, (40465), 34996 states have internal predecessors, (40465), 9278 states have call successors, (9278), 1324 states have call predecessors, (9278), 1325 states have return successors, (9298), 1381 states have call predecessors, (9298), 9278 states have call successors, (9298) [2021-12-19 15:43:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37513 states to 37513 states and 59041 transitions. [2021-12-19 15:43:51,542 INFO L78 Accepts]: Start accepts. Automaton has 37513 states and 59041 transitions. Word has length 3363 [2021-12-19 15:43:51,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:43:51,545 INFO L470 AbstractCegarLoop]: Abstraction has 37513 states and 59041 transitions. [2021-12-19 15:43:51,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 30.0) internal successors, (150), 6 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-19 15:43:51,545 INFO L276 IsEmpty]: Start isEmpty. Operand 37513 states and 59041 transitions. [2021-12-19 15:43:51,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3365 [2021-12-19 15:43:51,692 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:43:51,693 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 189, 189, 189, 189, 189, 189, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 15:43:51,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-12-19 15:43:51,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-19 15:43:51,919 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 15:43:51,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:43:51,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1964374819, now seen corresponding path program 1 times [2021-12-19 15:43:51,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:43:51,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583178814] [2021-12-19 15:43:51,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:43:51,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:43:53,611 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 15:43:53,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638963794] [2021-12-19 15:43:53,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:43:53,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 15:43:53,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:43:53,612 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 15:43:53,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-19 15:44:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:44:16,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 34537 conjuncts, 383 conjunts are in the unsatisfiable core [2021-12-19 15:44:16,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 15:44:52,343 INFO L134 CoverageAnalysis]: Checked inductivity of 219855 backedges. 0 proven. 214895 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2021-12-19 15:44:52,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 15:46:18,164 INFO L134 CoverageAnalysis]: Checked inductivity of 219855 backedges. 0 proven. 143831 refuted. 0 times theorem prover too weak. 76024 trivial. 0 not checked. [2021-12-19 15:46:18,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:46:18,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583178814] [2021-12-19 15:46:18,164 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 15:46:18,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638963794] [2021-12-19 15:46:18,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638963794] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 15:46:18,165 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 15:46:18,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [382, 383] total 765 [2021-12-19 15:46:18,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229020035] [2021-12-19 15:46:18,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 15:46:18,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 766 states [2021-12-19 15:46:18,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:46:18,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 766 interpolants. [2021-12-19 15:46:18,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147071, Invalid=438919, Unknown=0, NotChecked=0, Total=585990 [2021-12-19 15:46:18,211 INFO L87 Difference]: Start difference. First operand 37513 states and 59041 transitions. Second operand has 766 states, 765 states have (on average 4.580392156862745) internal successors, (3504), 766 states have internal predecessors, (3504), 380 states have call successors, (386), 191 states have call predecessors, (386), 191 states have return successors, (386), 380 states have call predecessors, (386), 380 states have call successors, (386) Killed by 15