/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/array-fpi/sqm.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 15:50:25,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 15:50:25,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 15:50:25,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 15:50:25,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 15:50:25,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 15:50:25,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 15:50:25,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 15:50:25,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 15:50:25,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 15:50:25,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 15:50:25,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 15:50:25,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 15:50:25,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 15:50:25,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 15:50:25,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 15:50:25,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 15:50:25,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 15:50:25,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 15:50:25,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 15:50:25,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 15:50:25,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 15:50:25,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 15:50:25,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 15:50:25,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 15:50:25,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 15:50:25,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 15:50:25,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 15:50:25,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 15:50:25,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 15:50:25,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 15:50:25,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 15:50:25,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 15:50:25,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 15:50:25,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 15:50:25,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 15:50:25,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 15:50:25,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 15:50:25,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 15:50:25,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 15:50:25,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 15:50:25,718 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 15:50:25,730 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 15:50:25,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 15:50:25,731 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 15:50:25,731 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 15:50:25,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 15:50:25,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 15:50:25,732 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 15:50:25,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 15:50:25,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 15:50:25,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 15:50:25,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 15:50:25,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 15:50:25,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 15:50:25,733 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 15:50:25,733 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 15:50:25,733 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 15:50:25,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 15:50:25,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 15:50:25,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 15:50:25,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 15:50:25,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 15:50:25,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:50:25,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 15:50:25,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 15:50:25,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 15:50:25,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 15:50:25,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 15:50:25,734 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 15:50:25,734 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 15:50:25,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 15:50:25,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 15:50:25,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 15:50:25,735 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 15:50:25,735 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 15:50:25,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 15:50:25,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 15:50:25,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 15:50:25,885 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 15:50:25,885 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 15:50:25,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sqm.c [2022-01-10 15:50:25,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a45887a/c8e2b05a53884054919b440b8238811f/FLAGb4ddf4eb0 [2022-01-10 15:50:26,229 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 15:50:26,229 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sqm.c [2022-01-10 15:50:26,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a45887a/c8e2b05a53884054919b440b8238811f/FLAGb4ddf4eb0 [2022-01-10 15:50:26,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a45887a/c8e2b05a53884054919b440b8238811f [2022-01-10 15:50:26,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 15:50:26,683 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 15:50:26,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 15:50:26,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 15:50:26,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 15:50:26,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:50:26" (1/1) ... [2022-01-10 15:50:26,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e75a54a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:50:26, skipping insertion in model container [2022-01-10 15:50:26,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:50:26" (1/1) ... [2022-01-10 15:50:26,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 15:50:26,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 15:50:26,801 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sqm.c[586,599] [2022-01-10 15:50:26,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:50:26,838 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 15:50:26,846 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sqm.c[586,599] [2022-01-10 15:50:26,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:50:26,863 INFO L208 MainTranslator]: Completed translation [2022-01-10 15:50:26,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:50:26 WrapperNode [2022-01-10 15:50:26,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 15:50:26,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 15:50:26,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 15:50:26,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 15:50:26,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:50:26" (1/1) ... [2022-01-10 15:50:26,881 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:50:26" (1/1) ... [2022-01-10 15:50:26,902 INFO L137 Inliner]: procedures = 18, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2022-01-10 15:50:26,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 15:50:26,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 15:50:26,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 15:50:26,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 15:50:26,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:50:26" (1/1) ... [2022-01-10 15:50:26,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:50:26" (1/1) ... [2022-01-10 15:50:26,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:50:26" (1/1) ... [2022-01-10 15:50:26,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:50:26" (1/1) ... [2022-01-10 15:50:26,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:50:26" (1/1) ... [2022-01-10 15:50:26,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:50:26" (1/1) ... [2022-01-10 15:50:26,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:50:26" (1/1) ... [2022-01-10 15:50:26,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 15:50:26,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 15:50:26,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 15:50:26,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 15:50:26,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:50:26" (1/1) ... [2022-01-10 15:50:26,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:50:26,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:50:26,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 15:50:26,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 15:50:26,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 15:50:26,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 15:50:26,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 15:50:26,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 15:50:26,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 15:50:26,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 15:50:26,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 15:50:27,032 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 15:50:27,033 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 15:50:27,229 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 15:50:27,233 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 15:50:27,234 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 15:50:27,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:50:27 BoogieIcfgContainer [2022-01-10 15:50:27,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 15:50:27,235 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 15:50:27,235 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 15:50:27,236 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 15:50:27,238 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:50:27" (1/1) ... [2022-01-10 15:50:27,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:50:27 BasicIcfg [2022-01-10 15:50:27,348 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 15:50:27,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 15:50:27,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 15:50:27,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 15:50:27,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:50:26" (1/4) ... [2022-01-10 15:50:27,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec8b248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:50:27, skipping insertion in model container [2022-01-10 15:50:27,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:50:26" (2/4) ... [2022-01-10 15:50:27,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec8b248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:50:27, skipping insertion in model container [2022-01-10 15:50:27,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:50:27" (3/4) ... [2022-01-10 15:50:27,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec8b248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:50:27, skipping insertion in model container [2022-01-10 15:50:27,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:50:27" (4/4) ... [2022-01-10 15:50:27,354 INFO L111 eAbstractionObserver]: Analyzing ICFG sqm.cTransformedIcfg [2022-01-10 15:50:27,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 15:50:27,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 15:50:27,387 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 15:50:27,391 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 15:50:27,392 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 15:50:27,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:50:27,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 15:50:27,403 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:50:27,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:50:27,404 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:50:27,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:50:27,408 INFO L85 PathProgramCache]: Analyzing trace with hash 751161390, now seen corresponding path program 1 times [2022-01-10 15:50:27,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:50:27,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675602175] [2022-01-10 15:50:27,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:50:27,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:50:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:50:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:50:27,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:50:27,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675602175] [2022-01-10 15:50:27,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675602175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:50:27,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:50:27,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 15:50:27,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522373860] [2022-01-10 15:50:27,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:50:27,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 15:50:27,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:50:27,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 15:50:27,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 15:50:27,549 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:50:27,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:50:27,558 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2022-01-10 15:50:27,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 15:50:27,560 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2022-01-10 15:50:27,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:50:27,564 INFO L225 Difference]: With dead ends: 38 [2022-01-10 15:50:27,564 INFO L226 Difference]: Without dead ends: 17 [2022-01-10 15:50:27,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 15:50:27,569 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 15:50:27,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 15:50:27,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-10 15:50:27,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-01-10 15:50:27,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:50:27,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-01-10 15:50:27,591 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2022-01-10 15:50:27,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:50:27,591 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-01-10 15:50:27,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:50:27,593 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-01-10 15:50:27,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 15:50:27,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:50:27,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:50:27,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 15:50:27,594 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:50:27,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:50:27,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1055369552, now seen corresponding path program 1 times [2022-01-10 15:50:27,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:50:27,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692003431] [2022-01-10 15:50:27,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:50:27,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:50:27,681 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:50:27,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311669727] [2022-01-10 15:50:27,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:50:27,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:50:27,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:50:27,684 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 15:50:27,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 15:50:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:50:27,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 15:50:27,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:50:27,945 INFO L353 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-01-10 15:50:27,947 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 81 [2022-01-10 15:50:27,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:27,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:27,970 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 27 [2022-01-10 15:50:27,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:27,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:27,996 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 27 [2022-01-10 15:50:28,229 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-01-10 15:50:28,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:28,236 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-01-10 15:50:28,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:28,273 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-01-10 15:50:28,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:28,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 15:50:28,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:28,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 15:50:28,434 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 15:50:28,435 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 125 treesize of output 69 [2022-01-10 15:50:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:50:28,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 15:50:28,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:50:28,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692003431] [2022-01-10 15:50:28,470 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:50:28,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311669727] [2022-01-10 15:50:28,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311669727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:50:28,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:50:28,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 15:50:28,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396814534] [2022-01-10 15:50:28,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:50:28,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 15:50:28,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:50:28,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 15:50:28,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 15:50:28,477 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:50:30,554 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:50:32,617 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:50:34,722 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:50:36,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:50:37,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:50:37,262 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-01-10 15:50:37,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 15:50:37,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2022-01-10 15:50:37,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:50:37,266 INFO L225 Difference]: With dead ends: 34 [2022-01-10 15:50:37,266 INFO L226 Difference]: Without dead ends: 32 [2022-01-10 15:50:37,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 15:50:37,267 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 13 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-01-10 15:50:37,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 52 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 4 Unknown, 0 Unchecked, 8.7s Time] [2022-01-10 15:50:37,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-10 15:50:37,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2022-01-10 15:50:37,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:50:37,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-01-10 15:50:37,271 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2022-01-10 15:50:37,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:50:37,272 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-01-10 15:50:37,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:50:37,272 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-01-10 15:50:37,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 15:50:37,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:50:37,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:50:37,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 15:50:37,479 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 [2022-01-10 15:50:37,480 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:50:37,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:50:37,480 INFO L85 PathProgramCache]: Analyzing trace with hash 312554478, now seen corresponding path program 1 times [2022-01-10 15:50:37,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:50:37,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837240212] [2022-01-10 15:50:37,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:50:37,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:50:37,539 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:50:37,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65588862] [2022-01-10 15:50:37,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:50:37,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:50:37,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:50:37,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 15:50:37,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 15:50:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:50:37,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 15:50:37,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:50:37,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:50:37,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 15:50:37,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:50:37,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837240212] [2022-01-10 15:50:37,678 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:50:37,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65588862] [2022-01-10 15:50:37,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65588862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:50:37,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:50:37,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 15:50:37,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070933186] [2022-01-10 15:50:37,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:50:37,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 15:50:37,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:50:37,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 15:50:37,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 15:50:37,681 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:50:39,706 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:50:40,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:50:40,135 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-01-10 15:50:40,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 15:50:40,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2022-01-10 15:50:40,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:50:40,137 INFO L225 Difference]: With dead ends: 41 [2022-01-10 15:50:40,138 INFO L226 Difference]: Without dead ends: 32 [2022-01-10 15:50:40,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 15:50:40,139 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 15:50:40,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 33 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 15:50:40,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-10 15:50:40,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2022-01-10 15:50:40,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:50:40,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-01-10 15:50:40,142 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2022-01-10 15:50:40,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:50:40,143 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-01-10 15:50:40,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:50:40,143 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-01-10 15:50:40,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 15:50:40,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:50:40,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:50:40,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 15:50:40,343 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 [2022-01-10 15:50:40,345 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:50:40,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:50:40,345 INFO L85 PathProgramCache]: Analyzing trace with hash -953919346, now seen corresponding path program 1 times [2022-01-10 15:50:40,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:50:40,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448256855] [2022-01-10 15:50:40,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:50:40,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:50:40,382 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:50:40,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478043290] [2022-01-10 15:50:40,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:50:40,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:50:40,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:50:40,383 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 15:50:40,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 15:50:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:50:40,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 15:50:40,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:50:40,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:50:40,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:50:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:50:48,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:50:48,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448256855] [2022-01-10 15:50:48,707 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:50:48,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478043290] [2022-01-10 15:50:48,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478043290] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:50:48,707 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 15:50:48,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-01-10 15:50:48,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863684784] [2022-01-10 15:50:48,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 15:50:48,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 15:50:48,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:50:48,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 15:50:48,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-10 15:50:48,708 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:50:50,731 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:50:51,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:50:51,248 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-01-10 15:50:51,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 15:50:51,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 14 [2022-01-10 15:50:51,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:50:51,249 INFO L225 Difference]: With dead ends: 40 [2022-01-10 15:50:51,249 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 15:50:51,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-10 15:50:51,250 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 20 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 15:50:51,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 49 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 48 Invalid, 1 Unknown, 14 Unchecked, 2.5s Time] [2022-01-10 15:50:51,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 15:50:51,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2022-01-10 15:50:51,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:50:51,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-01-10 15:50:51,261 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2022-01-10 15:50:51,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:50:51,261 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-01-10 15:50:51,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:50:51,261 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-01-10 15:50:51,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 15:50:51,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:50:51,262 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:50:51,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 15:50:51,463 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 [2022-01-10 15:50:51,464 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:50:51,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:50:51,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1017934828, now seen corresponding path program 1 times [2022-01-10 15:50:51,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:50:51,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007578752] [2022-01-10 15:50:51,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:50:51,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:50:51,485 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:50:51,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709653174] [2022-01-10 15:50:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:50:51,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:50:51,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:50:51,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 15:50:51,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 15:50:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:50:51,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 15:50:51,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:50:51,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:50:51,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:50:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:50:53,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:50:53,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007578752] [2022-01-10 15:50:53,339 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:50:53,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709653174] [2022-01-10 15:50:53,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709653174] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:50:53,339 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 15:50:53,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-01-10 15:50:53,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690424737] [2022-01-10 15:50:53,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 15:50:53,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 15:50:53,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:50:53,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 15:50:53,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-10 15:50:53,340 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:50:55,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:50:56,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:50:56,475 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2022-01-10 15:50:56,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 15:50:56,476 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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 16 [2022-01-10 15:50:56,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:50:56,476 INFO L225 Difference]: With dead ends: 34 [2022-01-10 15:50:56,477 INFO L226 Difference]: Without dead ends: 20 [2022-01-10 15:50:56,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-10 15:50:56,478 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-10 15:50:56,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 40 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 50 Invalid, 1 Unknown, 10 Unchecked, 3.1s Time] [2022-01-10 15:50:56,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-10 15:50:56,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2022-01-10 15:50:56,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:50:56,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-01-10 15:50:56,480 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2022-01-10 15:50:56,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:50:56,480 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-01-10 15:50:56,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:50:56,480 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-01-10 15:50:56,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 15:50:56,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:50:56,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:50:56,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-10 15:50:56,683 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 [2022-01-10 15:50:56,683 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:50:56,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:50:56,684 INFO L85 PathProgramCache]: Analyzing trace with hash -978045364, now seen corresponding path program 1 times [2022-01-10 15:50:56,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:50:56,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335321121] [2022-01-10 15:50:56,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:50:56,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:50:56,709 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:50:56,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862277873] [2022-01-10 15:50:56,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:50:56,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:50:56,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:50:56,718 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 15:50:56,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 15:50:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:50:57,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-10 15:50:57,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:50:57,219 INFO L353 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-01-10 15:50:57,219 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 81 [2022-01-10 15:50:57,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:57,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:57,229 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 27 [2022-01-10 15:50:57,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:57,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:57,238 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 27 [2022-01-10 15:50:57,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:57,267 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2022-01-10 15:50:57,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:57,272 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 15:50:57,303 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 15:50:57,303 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2022-01-10 15:50:57,333 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2022-01-10 15:50:57,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:57,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:57,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:57,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:57,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:57,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:57,415 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 15:50:57,415 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 55 [2022-01-10 15:50:57,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:57,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 15:50:57,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:50:57,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 15:50:57,510 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 15:50:57,510 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 172 treesize of output 79 [2022-01-10 15:50:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:50:57,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:51:06,563 WARN L838 $PredicateComparison]: unable to prove that (forall ((|aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| Int) (v_ArrVal_194 Int) (v_ArrVal_193 Int) (|aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| Int)) (let ((.cse3 (let ((.cse5 (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 8) 18446744073709551616))) (store (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) (mod (+ .cse5 |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|) 18446744073709551616) v_ArrVal_194) (mod (+ .cse5 |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| 4) 18446744073709551616) v_ArrVal_193))) (.cse4 (mod (+ 18446744073709551608 (* 8 |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|)) 18446744073709551616))) (let ((.cse2 (select .cse3 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| .cse4) 18446744073709551616)))) (let ((.cse0 (+ (* (select .cse3 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| .cse4 4) 18446744073709551616)) 4294967296) .cse2)) (.cse1 (+ (* 18446744073709551616 |aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|) |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|))) (or (> 0 |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|) (= (mod (* |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|) 18446744073709551616) .cse0) (< .cse0 0) (>= |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| 18446744073709551616) (not (<= .cse1 1)) (not (<= 1 .cse1)) (<= 4294967296 .cse2)))))) is different from false [2022-01-10 15:51:10,034 WARN L838 $PredicateComparison]: unable to prove that (forall ((|aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| Int) (v_ArrVal_194 Int) (v_ArrVal_193 Int) (|aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| Int)) (let ((.cse3 (store (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) (mod (+ 8 |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|) 18446744073709551616) v_ArrVal_194) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| 12) 18446744073709551616) v_ArrVal_193)) (.cse4 (mod (+ 18446744073709551608 (* 8 |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|)) 18446744073709551616))) (let ((.cse0 (select .cse3 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| .cse4) 18446744073709551616)))) (let ((.cse2 (+ (* 18446744073709551616 |aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|) |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|)) (.cse1 (+ (* (select .cse3 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| .cse4 4) 18446744073709551616)) 4294967296) .cse0))) (or (> 0 |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|) (<= 4294967296 .cse0) (< .cse1 0) (>= |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| 18446744073709551616) (not (<= .cse2 1)) (not (<= 1 .cse2)) (= .cse1 (mod (* |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|) 18446744073709551616))))))) is different from false [2022-01-10 15:51:14,972 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_191 (Array Int Int)) (|aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| Int) (v_ArrVal_194 Int) (v_ArrVal_193 Int) (|aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| Int)) (let ((.cse3 (store (store (select (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt| v_ArrVal_191) |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) (mod (+ 8 |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|) 18446744073709551616) v_ArrVal_194) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| 12) 18446744073709551616) v_ArrVal_193)) (.cse4 (mod (+ 18446744073709551608 (* 8 |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|)) 18446744073709551616))) (let ((.cse1 (select .cse3 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| .cse4) 18446744073709551616)))) (let ((.cse0 (+ .cse1 (* (select .cse3 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| .cse4 4) 18446744073709551616)) 4294967296))) (.cse2 (+ (* 18446744073709551616 |aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|) |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|))) (or (> 0 |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|) (= .cse0 (mod (* |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|) 18446744073709551616)) (< .cse0 0) (<= 4294967296 .cse1) (>= |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| 18446744073709551616) (not (<= .cse2 1)) (not (<= 1 .cse2))))))) is different from false [2022-01-10 15:51:15,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 15:51:15,014 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 254 treesize of output 244 [2022-01-10 15:51:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-01-10 15:51:15,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:51:15,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335321121] [2022-01-10 15:51:15,039 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:51:15,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862277873] [2022-01-10 15:51:15,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862277873] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:51:15,039 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 15:51:15,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2022-01-10 15:51:15,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912929803] [2022-01-10 15:51:15,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 15:51:15,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 15:51:15,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:51:15,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 15:51:15,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=68, Unknown=3, NotChecked=54, Total=156 [2022-01-10 15:51:15,041 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:51:17,161 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|))) (and (<= |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| 0) (not (= |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt| 1)) (= |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 1) (<= 0 |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|) (= (mod (div 1 4294967296) 4294967296) (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| 4) 18446744073709551616))) (forall ((v_ArrVal_191 (Array Int Int)) (|aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| Int) (v_ArrVal_194 Int) (v_ArrVal_193 Int) (|aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| Int)) (let ((.cse4 (store (store (select (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt| v_ArrVal_191) |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) (mod (+ 8 |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|) 18446744073709551616) v_ArrVal_194) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| 12) 18446744073709551616) v_ArrVal_193)) (.cse5 (mod (+ 18446744073709551608 (* 8 |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|)) 18446744073709551616))) (let ((.cse2 (select .cse4 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| .cse5) 18446744073709551616)))) (let ((.cse1 (+ .cse2 (* (select .cse4 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| .cse5 4) 18446744073709551616)) 4294967296))) (.cse3 (+ (* 18446744073709551616 |aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|) |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|))) (or (> 0 |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|) (= .cse1 (mod (* |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|) 18446744073709551616)) (< .cse1 0) (<= 4294967296 .cse2) (>= |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| 18446744073709551616) (not (<= .cse3 1)) (not (<= 1 .cse3))))))) (= (select .cse0 |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|) (mod (div 1 1) 4294967296)) (= (select |c_#validInt| 1) 1) (not (= |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|)))) is different from false [2022-01-10 15:51:19,168 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|))) (and (<= |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| 0) (<= 0 |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|) (= (mod (div 1 4294967296) 4294967296) (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| 4) 18446744073709551616))) (forall ((|aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| Int) (v_ArrVal_194 Int) (v_ArrVal_193 Int) (|aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| Int)) (let ((.cse4 (store (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) (mod (+ 8 |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|) 18446744073709551616) v_ArrVal_194) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| 12) 18446744073709551616) v_ArrVal_193)) (.cse5 (mod (+ 18446744073709551608 (* 8 |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|)) 18446744073709551616))) (let ((.cse1 (select .cse4 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| .cse5) 18446744073709551616)))) (let ((.cse3 (+ (* 18446744073709551616 |aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|) |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|)) (.cse2 (+ (* (select .cse4 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| .cse5 4) 18446744073709551616)) 4294967296) .cse1))) (or (> 0 |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|) (<= 4294967296 .cse1) (< .cse2 0) (>= |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| 18446744073709551616) (not (<= .cse3 1)) (not (<= 1 .cse3)) (= .cse2 (mod (* |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|) 18446744073709551616))))))) (= (select .cse0 |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|) (mod (div 1 1) 4294967296)))) is different from false [2022-01-10 15:51:21,175 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|))) (and (<= |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| 0) (= |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 1) (<= 0 |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|) (= (mod (div 1 4294967296) 4294967296) (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| 4) 18446744073709551616))) (forall ((|aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| Int) (v_ArrVal_194 Int) (v_ArrVal_193 Int) (|aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| Int)) (let ((.cse4 (let ((.cse6 (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 8) 18446744073709551616))) (store (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt|) (mod (+ .cse6 |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|) 18446744073709551616) v_ArrVal_194) (mod (+ .cse6 |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| 4) 18446744073709551616) v_ArrVal_193))) (.cse5 (mod (+ 18446744073709551608 (* 8 |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|)) 18446744073709551616))) (let ((.cse3 (select .cse4 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| .cse5) 18446744073709551616)))) (let ((.cse1 (+ (* (select .cse4 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt| .cse5 4) 18446744073709551616)) 4294967296) .cse3)) (.cse2 (+ (* 18446744073709551616 |aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|) |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|))) (or (> 0 |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|) (= (mod (* |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84|) 18446744073709551616) .cse1) (< .cse1 0) (>= |aux_mod_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10_84| 18446744073709551616) (not (<= .cse2 1)) (not (<= 1 .cse2)) (<= 4294967296 .cse3)))))) (= (select .cse0 |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.offsetInt|) (mod (div 1 1) 4294967296)))) is different from false [2022-01-10 15:51:23,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:51:26,287 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-10 15:51:26,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:51:26,821 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-01-10 15:51:26,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 15:51:26,822 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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 16 [2022-01-10 15:51:26,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:51:26,822 INFO L225 Difference]: With dead ends: 39 [2022-01-10 15:51:26,822 INFO L226 Difference]: Without dead ends: 37 [2022-01-10 15:51:26,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=50, Invalid=100, Unknown=6, NotChecked=150, Total=306 [2022-01-10 15:51:26,823 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-01-10 15:51:26,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 96 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 2 Unknown, 77 Unchecked, 5.7s Time] [2022-01-10 15:51:26,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-10 15:51:26,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2022-01-10 15:51:26,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:51:26,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-01-10 15:51:26,829 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2022-01-10 15:51:26,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:51:26,829 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-01-10 15:51:26,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:51:26,829 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-01-10 15:51:26,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 15:51:26,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:51:26,829 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:51:26,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 15:51:27,031 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 [2022-01-10 15:51:27,031 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:51:27,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:51:27,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1606655114, now seen corresponding path program 2 times [2022-01-10 15:51:27,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:51:27,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528266445] [2022-01-10 15:51:27,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:51:27,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:51:27,052 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:51:27,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009280331] [2022-01-10 15:51:27,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 15:51:27,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:51:27,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:51:27,059 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 15:51:27,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 15:51:27,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 15:51:27,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 15:51:27,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 15:51:27,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:51:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:51:27,308 INFO L328 TraceCheckSpWp]: Computing backward predicates...