./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/modn.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/modn.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b1b107a3e17c36933ddc5a5cff6ab95f9f0d71df794eec32ec4a28d109efd829 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 01:44:40,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 01:44:40,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 01:44:40,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 01:44:40,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 01:44:40,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 01:44:40,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 01:44:40,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 01:44:40,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 01:44:40,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 01:44:40,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 01:44:40,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 01:44:40,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 01:44:40,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 01:44:40,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 01:44:40,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 01:44:40,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 01:44:40,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 01:44:40,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 01:44:40,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 01:44:40,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 01:44:40,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 01:44:40,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 01:44:40,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 01:44:40,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 01:44:40,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 01:44:40,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 01:44:40,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 01:44:40,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 01:44:40,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 01:44:40,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 01:44:40,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 01:44:40,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 01:44:40,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 01:44:40,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 01:44:40,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 01:44:40,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 01:44:40,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 01:44:40,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 01:44:40,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 01:44:40,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 01:44:40,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 01:44:40,681 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 01:44:40,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 01:44:40,682 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 01:44:40,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 01:44:40,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 01:44:40,684 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 01:44:40,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 01:44:40,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 01:44:40,685 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 01:44:40,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 01:44:40,686 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 01:44:40,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 01:44:40,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 01:44:40,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 01:44:40,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 01:44:40,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 01:44:40,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 01:44:40,687 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 01:44:40,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 01:44:40,688 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 01:44:40,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 01:44:40,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 01:44:40,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 01:44:40,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 01:44:40,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 01:44:40,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 01:44:40,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 01:44:40,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 01:44:40,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 01:44:40,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 01:44:40,691 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 01:44:40,691 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 01:44:40,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 01:44:40,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 01:44:40,692 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1b107a3e17c36933ddc5a5cff6ab95f9f0d71df794eec32ec4a28d109efd829 [2021-12-17 01:44:40,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 01:44:40,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 01:44:40,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 01:44:40,917 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 01:44:40,918 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 01:44:40,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/modn.c [2021-12-17 01:44:40,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c582a42b/d9f1ab285f164cd3b638f72bfe6f6961/FLAGaf6512200 [2021-12-17 01:44:41,341 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 01:44:41,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/modn.c [2021-12-17 01:44:41,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c582a42b/d9f1ab285f164cd3b638f72bfe6f6961/FLAGaf6512200 [2021-12-17 01:44:41,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c582a42b/d9f1ab285f164cd3b638f72bfe6f6961 [2021-12-17 01:44:41,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 01:44:41,749 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 01:44:41,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 01:44:41,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 01:44:41,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 01:44:41,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 01:44:41" (1/1) ... [2021-12-17 01:44:41,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ce79fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:44:41, skipping insertion in model container [2021-12-17 01:44:41,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 01:44:41" (1/1) ... [2021-12-17 01:44:41,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 01:44:41,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 01:44:41,916 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/modn.c[587,600] [2021-12-17 01:44:41,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 01:44:41,948 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 01:44:41,962 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/modn.c[587,600] [2021-12-17 01:44:41,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 01:44:41,994 INFO L208 MainTranslator]: Completed translation [2021-12-17 01:44:41,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:44:41 WrapperNode [2021-12-17 01:44:41,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 01:44:41,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 01:44:41,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 01:44:41,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 01:44:42,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:44:41" (1/1) ... [2021-12-17 01:44:42,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:44:41" (1/1) ... [2021-12-17 01:44:42,038 INFO L137 Inliner]: procedures = 17, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2021-12-17 01:44:42,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 01:44:42,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 01:44:42,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 01:44:42,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 01:44:42,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:44:41" (1/1) ... [2021-12-17 01:44:42,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:44:41" (1/1) ... [2021-12-17 01:44:42,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:44:41" (1/1) ... [2021-12-17 01:44:42,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:44:41" (1/1) ... [2021-12-17 01:44:42,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:44:41" (1/1) ... [2021-12-17 01:44:42,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:44:41" (1/1) ... [2021-12-17 01:44:42,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:44:41" (1/1) ... [2021-12-17 01:44:42,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 01:44:42,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 01:44:42,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 01:44:42,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 01:44:42,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:44:41" (1/1) ... [2021-12-17 01:44:42,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 01:44:42,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:44:42,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 01:44:42,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 01:44:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 01:44:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 01:44:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 01:44:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 01:44:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-17 01:44:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 01:44:42,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 01:44:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 01:44:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 01:44:42,184 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 01:44:42,185 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 01:44:42,292 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 01:44:42,297 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 01:44:42,298 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-17 01:44:42,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 01:44:42 BoogieIcfgContainer [2021-12-17 01:44:42,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 01:44:42,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 01:44:42,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 01:44:42,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 01:44:42,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 01:44:41" (1/3) ... [2021-12-17 01:44:42,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57cc972a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 01:44:42, skipping insertion in model container [2021-12-17 01:44:42,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:44:41" (2/3) ... [2021-12-17 01:44:42,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57cc972a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 01:44:42, skipping insertion in model container [2021-12-17 01:44:42,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 01:44:42" (3/3) ... [2021-12-17 01:44:42,316 INFO L111 eAbstractionObserver]: Analyzing ICFG modn.c [2021-12-17 01:44:42,319 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 01:44:42,320 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 01:44:42,355 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 01:44:42,362 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 [2021-12-17 01:44:42,362 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 01:44:42,373 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) [2021-12-17 01:44:42,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-17 01:44:42,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:44:42,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:44:42,379 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:44:42,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:44:42,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2021-12-17 01:44:42,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:44:42,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391969862] [2021-12-17 01:44:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:44:42,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:44:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 01:44:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:44:42,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:44:42,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391969862] [2021-12-17 01:44:42,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391969862] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 01:44:42,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 01:44:42,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 01:44:42,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429346824] [2021-12-17 01:44:42,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 01:44:42,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 01:44:42,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:44:42,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 01:44:42,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 01:44:42,561 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) [2021-12-17 01:44:42,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:44:42,599 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2021-12-17 01:44:42,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 01:44:42,601 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 [2021-12-17 01:44:42,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:44:42,607 INFO L225 Difference]: With dead ends: 38 [2021-12-17 01:44:42,607 INFO L226 Difference]: Without dead ends: 17 [2021-12-17 01:44:42,609 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 [2021-12-17 01:44:42,612 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 [2021-12-17 01:44:42,613 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] [2021-12-17 01:44:42,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-17 01:44:42,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-12-17 01:44:42,636 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) [2021-12-17 01:44:42,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-12-17 01:44:42,637 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2021-12-17 01:44:42,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:44:42,638 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-12-17 01:44:42,638 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) [2021-12-17 01:44:42,638 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-12-17 01:44:42,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-17 01:44:42,639 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:44:42,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:44:42,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 01:44:42,640 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:44:42,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:44:42,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2021-12-17 01:44:42,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:44:42,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542711910] [2021-12-17 01:44:42,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:44:42,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:44:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 01:44:42,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:44:42,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:44:42,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542711910] [2021-12-17 01:44:42,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542711910] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 01:44:42,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 01:44:42,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 01:44:42,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056191408] [2021-12-17 01:44:42,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 01:44:42,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 01:44:42,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:44:42,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 01:44:42,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 01:44:42,764 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-12-17 01:44:42,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:44:42,821 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2021-12-17 01:44:42,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 01:44:42,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 [2021-12-17 01:44:42,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:44:42,824 INFO L225 Difference]: With dead ends: 37 [2021-12-17 01:44:42,825 INFO L226 Difference]: Without dead ends: 27 [2021-12-17 01:44:42,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 01:44:42,829 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 01:44:42,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 15 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 01:44:42,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-17 01:44:42,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2021-12-17 01:44:42,838 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) [2021-12-17 01:44:42,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-12-17 01:44:42,839 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2021-12-17 01:44:42,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:44:42,841 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-17 01:44:42,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-12-17 01:44:42,844 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-12-17 01:44:42,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-17 01:44:42,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:44:42,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:44:42,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 01:44:42,847 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:44:42,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:44:42,848 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2021-12-17 01:44:42,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:44:42,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278074864] [2021-12-17 01:44:42,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:44:42,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:44:42,892 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:44:42,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226544200] [2021-12-17 01:44:42,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:44:42,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:44:42,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:44:42,894 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 01:44:42,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 01:44:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 01:44:42,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-17 01:44:42,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:44:43,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-17 01:44:43,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2021-12-17 01:44:43,356 INFO L354 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2021-12-17 01:44:43,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 28 [2021-12-17 01:44:43,592 INFO L388 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 34 treesize of output 22 [2021-12-17 01:44:43,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:44:43,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:44:45,799 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (= 0 (mod .cse3 c_~N~0)))) (let ((.cse2 (or (and (not .cse0) (< .cse3 0)) (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= 0 (select (store (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) (mod (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) c_~N~0)) |c_ULTIMATE.start_main_~a~0#1.offset|))))) (.cse1 (<= 0 .cse3))) (and (or (and (or .cse0 (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= 0 (select (store (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (mod (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) c_~N~0) c_~N~0)) |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse1) .cse2) (<= 0 c_~N~0)) (or (and .cse2 (or .cse0 (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= 0 (select (store (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (mod (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) c_~N~0) (* c_~N~0 (- 1)))) |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse1)) (< c_~N~0 0)))))) is different from false [2021-12-17 01:44:48,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-17 01:44:48,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:44:48,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278074864] [2021-12-17 01:44:48,295 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:44:48,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226544200] [2021-12-17 01:44:48,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226544200] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:44:48,296 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:44:48,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-12-17 01:44:48,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248864455] [2021-12-17 01:44:48,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:44:48,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-17 01:44:48,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:44:48,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-17 01:44:48,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=234, Unknown=2, NotChecked=32, Total=342 [2021-12-17 01:44:48,298 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 19 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:44:48,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:44:48,725 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2021-12-17 01:44:48,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 01:44:48,725 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 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 [2021-12-17 01:44:48,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:44:48,726 INFO L225 Difference]: With dead ends: 36 [2021-12-17 01:44:48,726 INFO L226 Difference]: Without dead ends: 34 [2021-12-17 01:44:48,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=135, Invalid=373, Unknown=2, NotChecked=42, Total=552 [2021-12-17 01:44:48,728 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 01:44:48,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 69 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 79 Invalid, 0 Unknown, 58 Unchecked, 0.1s Time] [2021-12-17 01:44:48,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-17 01:44:48,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2021-12-17 01:44:48,733 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) [2021-12-17 01:44:48,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-12-17 01:44:48,734 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2021-12-17 01:44:48,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:44:48,734 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-12-17 01:44:48,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:44:48,735 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-12-17 01:44:48,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-17 01:44:48,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:44:48,735 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:44:48,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 01:44:48,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:44:48,936 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:44:48,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:44:48,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1267903976, now seen corresponding path program 2 times [2021-12-17 01:44:48,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:44:48,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747124028] [2021-12-17 01:44:48,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:44:48,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:44:48,954 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:44:48,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654147712] [2021-12-17 01:44:48,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 01:44:48,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:44:48,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:44:48,957 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 01:44:48,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 01:44:49,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 01:44:49,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 01:44:49,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 01:44:49,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:44:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:44:49,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:44:49,139 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:44:49,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:44:49,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747124028] [2021-12-17 01:44:49,140 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:44:49,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654147712] [2021-12-17 01:44:49,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654147712] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:44:49,141 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:44:49,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-17 01:44:49,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799867125] [2021-12-17 01:44:49,141 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:44:49,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 01:44:49,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:44:49,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 01:44:49,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-17 01:44:49,143 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:44:49,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:44:49,235 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2021-12-17 01:44:49,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 01:44:49,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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 18 [2021-12-17 01:44:49,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:44:49,238 INFO L225 Difference]: With dead ends: 61 [2021-12-17 01:44:49,238 INFO L226 Difference]: Without dead ends: 42 [2021-12-17 01:44:49,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-17 01:44:49,243 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 46 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 01:44:49,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 45 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 01:44:49,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-17 01:44:49,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 26. [2021-12-17 01:44:49,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 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) [2021-12-17 01:44:49,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-12-17 01:44:49,257 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2021-12-17 01:44:49,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:44:49,257 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-12-17 01:44:49,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:44:49,258 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-12-17 01:44:49,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-17 01:44:49,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:44:49,259 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:44:49,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 01:44:49,475 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,SelfDestructingSolverStorable3 [2021-12-17 01:44:49,476 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:44:49,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:44:49,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1174519208, now seen corresponding path program 3 times [2021-12-17 01:44:49,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:44:49,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691498559] [2021-12-17 01:44:49,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:44:49,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:44:49,490 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:44:49,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996014338] [2021-12-17 01:44:49,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-17 01:44:49,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:44:49,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:44:49,492 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 01:44:49,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 01:44:49,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-17 01:44:49,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 01:44:49,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-17 01:44:49,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:44:49,676 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-17 01:44:49,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 64 [2021-12-17 01:44:50,090 INFO L388 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 34 treesize of output 22 [2021-12-17 01:44:50,116 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 01:44:50,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:44:50,267 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 01:44:50,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 142 treesize of output 124 [2021-12-17 01:44:50,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 23 treesize of output 17 [2021-12-17 01:44:50,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 23 treesize of output 17 [2021-12-17 01:44:50,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 23 treesize of output 17 [2021-12-17 01:44:50,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 23 treesize of output 17 [2021-12-17 01:44:50,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 26 treesize of output 24 [2021-12-17 01:44:50,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 01:44:50,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:44:50,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691498559] [2021-12-17 01:44:50,962 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:44:50,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996014338] [2021-12-17 01:44:50,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996014338] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:44:50,963 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:44:50,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-12-17 01:44:50,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980823358] [2021-12-17 01:44:50,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:44:50,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-17 01:44:50,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:44:50,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-17 01:44:50,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-12-17 01:44:50,965 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:44:51,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:44:51,043 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-12-17 01:44:51,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 01:44:51,043 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 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 18 [2021-12-17 01:44:51,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:44:51,044 INFO L225 Difference]: With dead ends: 29 [2021-12-17 01:44:51,044 INFO L226 Difference]: Without dead ends: 24 [2021-12-17 01:44:51,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-12-17 01:44:51,045 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 01:44:51,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 60 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2021-12-17 01:44:51,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-17 01:44:51,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-12-17 01:44:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:44:51,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-12-17 01:44:51,048 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 18 [2021-12-17 01:44:51,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:44:51,048 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-12-17 01:44:51,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:44:51,048 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-12-17 01:44:51,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-17 01:44:51,049 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:44:51,049 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:44:51,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 01:44:51,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:44:51,250 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:44:51,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:44:51,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1786143722, now seen corresponding path program 4 times [2021-12-17 01:44:51,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:44:51,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727977229] [2021-12-17 01:44:51,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:44:51,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:44:51,265 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:44:51,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1077066438] [2021-12-17 01:44:51,276 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-17 01:44:51,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:44:51,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:44:51,278 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 01:44:51,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 01:44:51,322 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-17 01:44:51,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 01:44:51,323 WARN L261 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-17 01:44:51,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:44:51,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-17 01:44:51,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 25 treesize of output 13 [2021-12-17 01:44:51,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 25 treesize of output 13 [2021-12-17 01:44:51,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:44:51,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2021-12-17 01:44:51,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:44:51,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:44:51,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2021-12-17 01:44:52,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:44:52,052 INFO L388 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 45 treesize of output 25 [2021-12-17 01:44:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:44:52,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:44:54,196 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_44| Int)) (or (forall ((v_ArrVal_135 Int)) (= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_44| 4)) v_ArrVal_135) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~0#1_44| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-12-17 01:45:21,892 WARN L838 $PredicateComparison]: unable to prove that (forall ((~N~0 Int)) (or (<= ~N~0 |c_ULTIMATE.start_main_~i~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_44| Int)) (or (let ((.cse0 (and (forall ((v_ArrVal_135 Int)) (= 0 (select (store (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (+ (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse2)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (mod .cse2 ~N~0)))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_44| 4)) v_ArrVal_135) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse3 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1))) (or (<= 0 .cse3) (= 0 (mod .cse3 ~N~0))))))) (and (or (<= 0 ~N~0) .cse0) (or (< ~N~0 0) .cse0))) (< |v_ULTIMATE.start_main_~i~0#1_44| 1))) (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) ~N~0))) is different from false [2021-12-17 01:45:41,193 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-17 01:45:41,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:45:41,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727977229] [2021-12-17 01:45:41,194 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:45:41,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077066438] [2021-12-17 01:45:41,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077066438] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:45:41,195 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:45:41,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2021-12-17 01:45:41,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546410188] [2021-12-17 01:45:41,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:45:41,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-17 01:45:41,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:45:41,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-17 01:45:41,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=379, Unknown=16, NotChecked=82, Total=552 [2021-12-17 01:45:41,197 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:45:45,483 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (~N~0 Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|))) (and (< 1 ~N~0) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|)) (mod .cse0 ~N~0)) (= .cse0 2) (<= ~N~0 2)))) (= 0 |c_ULTIMATE.start_main_~a~0#1.offset|) (= |c_ULTIMATE.start_main_~i~0#1| 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_44| Int)) (or (forall ((v_ArrVal_135 Int)) (= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_44| 4)) v_ArrVal_135) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~0#1_44| (+ |c_ULTIMATE.start_main_~i~0#1| 1))))) is different from false [2021-12-17 01:45:47,487 WARN L838 $PredicateComparison]: unable to prove that (and (= 0 |c_ULTIMATE.start_main_~a~0#1.offset|) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (and (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |ULTIMATE.start_main_~#sum~0#1.base|) (= (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) 2))) (exists ((~N~0 Int)) (and (< 1 ~N~0) (<= ~N~0 2) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (mod 2 ~N~0)))) (forall ((|v_ULTIMATE.start_main_~i~0#1_44| Int)) (or (forall ((v_ArrVal_135 Int)) (= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_44| 4)) v_ArrVal_135) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~0#1_44| (+ |c_ULTIMATE.start_main_~i~0#1| 1))))) is different from false [2021-12-17 01:45:47,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:45:47,583 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2021-12-17 01:45:47,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 01:45:47,583 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 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 20 [2021-12-17 01:45:47,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:45:47,584 INFO L225 Difference]: With dead ends: 49 [2021-12-17 01:45:47,584 INFO L226 Difference]: Without dead ends: 47 [2021-12-17 01:45:47,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 53.1s TimeCoverageRelationStatistics Valid=90, Invalid=459, Unknown=19, NotChecked=188, Total=756 [2021-12-17 01:45:47,585 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 01:45:47,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 80 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 121 Unchecked, 0.0s Time] [2021-12-17 01:45:47,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-12-17 01:45:47,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2021-12-17 01:45:47,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:45:47,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2021-12-17 01:45:47,590 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 20 [2021-12-17 01:45:47,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:45:47,590 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2021-12-17 01:45:47,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:45:47,590 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2021-12-17 01:45:47,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 01:45:47,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:45:47,591 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:45:47,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 01:45:47,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:45:47,799 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:45:47,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:45:47,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1232945932, now seen corresponding path program 1 times [2021-12-17 01:45:47,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:45:47,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721883488] [2021-12-17 01:45:47,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:45:47,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:45:47,813 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:45:47,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1830865340] [2021-12-17 01:45:47,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:45:47,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:45:47,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:45:47,820 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 01:45:47,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 01:45:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 01:45:47,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-17 01:45:47,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:45:47,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-17 01:45:47,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2021-12-17 01:45:47,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-12-17 01:45:47,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-12-17 01:45:47,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 41 [2021-12-17 01:45:48,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:45:48,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 51 [2021-12-17 01:45:48,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 33 [2021-12-17 01:45:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:45:49,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:45:59,936 WARN L838 $PredicateComparison]: unable to prove that (forall ((~N~0 Int) (v_ArrVal_174 Int)) (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_174)))) (let ((.cse0 (store (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (mod v_ArrVal_174 ~N~0)))) (let ((.cse1 (mod (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse0) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) ~N~0))) (or (not (= 0 (select (store .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4) .cse1) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< v_ArrVal_174 (+ (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset|) 2)) (= 0 .cse1))))))) is different from false [2021-12-17 01:45:59,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-17 01:45:59,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:45:59,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721883488] [2021-12-17 01:45:59,952 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:45:59,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830865340] [2021-12-17 01:45:59,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830865340] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:45:59,952 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:45:59,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2021-12-17 01:45:59,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952217999] [2021-12-17 01:45:59,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:45:59,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-17 01:45:59,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:45:59,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-17 01:45:59,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=451, Unknown=3, NotChecked=44, Total=600 [2021-12-17 01:45:59,954 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:46:00,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:46:00,421 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2021-12-17 01:46:00,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 01:46:00,422 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 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 24 [2021-12-17 01:46:00,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:46:00,422 INFO L225 Difference]: With dead ends: 71 [2021-12-17 01:46:00,423 INFO L226 Difference]: Without dead ends: 69 [2021-12-17 01:46:00,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=128, Invalid=575, Unknown=3, NotChecked=50, Total=756 [2021-12-17 01:46:00,425 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 01:46:00,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 111 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 75 Unchecked, 0.3s Time] [2021-12-17 01:46:00,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-17 01:46:00,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 55. [2021-12-17 01:46:00,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.2037037037037037) internal successors, (65), 54 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:46:00,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2021-12-17 01:46:00,432 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 24 [2021-12-17 01:46:00,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:46:00,433 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2021-12-17 01:46:00,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:46:00,433 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2021-12-17 01:46:00,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 01:46:00,434 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:46:00,434 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:46:00,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-17 01:46:00,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:46:00,658 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:46:00,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:46:00,659 INFO L85 PathProgramCache]: Analyzing trace with hash -900609774, now seen corresponding path program 5 times [2021-12-17 01:46:00,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:46:00,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731006634] [2021-12-17 01:46:00,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:46:00,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:46:00,673 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:46:00,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535586314] [2021-12-17 01:46:00,681 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-17 01:46:00,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:46:00,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:46:00,682 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 01:46:00,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-17 01:46:00,760 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-17 01:46:00,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 01:46:00,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-17 01:46:00,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:46:00,847 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:46:00,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:46:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:46:00,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:46:00,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731006634] [2021-12-17 01:46:00,932 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:46:00,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535586314] [2021-12-17 01:46:00,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535586314] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:46:00,933 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:46:00,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-12-17 01:46:00,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53535541] [2021-12-17 01:46:00,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:46:00,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-17 01:46:00,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:46:00,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-17 01:46:00,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-12-17 01:46:00,935 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:46:01,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:46:01,131 INFO L93 Difference]: Finished difference Result 123 states and 134 transitions. [2021-12-17 01:46:01,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 01:46:01,132 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 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 24 [2021-12-17 01:46:01,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:46:01,132 INFO L225 Difference]: With dead ends: 123 [2021-12-17 01:46:01,133 INFO L226 Difference]: Without dead ends: 85 [2021-12-17 01:46:01,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2021-12-17 01:46:01,134 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 149 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 01:46:01,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 99 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 01:46:01,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-17 01:46:01,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 51. [2021-12-17 01:46:01,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.14) internal successors, (57), 50 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:46:01,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-12-17 01:46:01,141 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 24 [2021-12-17 01:46:01,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:46:01,141 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-12-17 01:46:01,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:46:01,141 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-12-17 01:46:01,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 01:46:01,142 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:46:01,142 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:46:01,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-17 01:46:01,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:46:01,356 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:46:01,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:46:01,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1049585326, now seen corresponding path program 6 times [2021-12-17 01:46:01,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:46:01,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114243749] [2021-12-17 01:46:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:46:01,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:46:01,373 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:46:01,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495717761] [2021-12-17 01:46:01,373 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-17 01:46:01,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:46:01,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:46:01,383 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 01:46:01,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-17 01:46:01,440 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-12-17 01:46:01,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 01:46:01,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-17 01:46:01,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:46:01,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2021-12-17 01:46:01,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-17 01:46:01,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-17 01:46:01,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-17 01:46:01,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-17 01:46:01,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-12-17 01:46:01,821 INFO L354 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2021-12-17 01:46:01,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 40 [2021-12-17 01:46:01,992 INFO L354 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2021-12-17 01:46:01,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 44 [2021-12-17 01:46:02,281 INFO L388 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 41 treesize of output 25 [2021-12-17 01:46:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:46:02,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:46:04,498 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_80| Int) (|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_268 Int) (v_ArrVal_266 Int)) (or (< (+ |v_ULTIMATE.start_main_~i~0#1_80| 1) c_~N~0) (= 0 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_266) (+ (* |v_ULTIMATE.start_main_~i~0#1_80| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_268) |c_ULTIMATE.start_main_~a~0#1.offset|)) (< (+ |ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_80|))) is different from false [2021-12-17 01:46:06,335 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_80| Int) (|v_ULTIMATE.start_main_~i~0#1_82| Int)) (or (< (+ |v_ULTIMATE.start_main_~i~0#1_80| 1) c_~N~0) (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (= 0 (mod .cse3 c_~N~0)))) (let ((.cse1 (<= 0 .cse3)) (.cse2 (or (and (not .cse0) (< .cse3 0)) (forall ((v_ArrVal_268 Int) (v_ArrVal_266 Int)) (= 0 (select (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) (mod (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) c_~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_82| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_266) (+ (* |v_ULTIMATE.start_main_~i~0#1_80| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_268) |c_ULTIMATE.start_main_~a~0#1.offset|)))))) (and (or (and (or .cse0 .cse1 (forall ((v_ArrVal_268 Int) (v_ArrVal_266 Int)) (= 0 (select (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (mod (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) c_~N~0) c_~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_82| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_266) (+ (* |v_ULTIMATE.start_main_~i~0#1_80| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_268) |c_ULTIMATE.start_main_~a~0#1.offset|)))) .cse2) (<= 0 c_~N~0)) (or (< c_~N~0 0) (and (or .cse0 (forall ((v_ArrVal_268 Int) (v_ArrVal_266 Int)) (= 0 (select (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (mod (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) c_~N~0) (* c_~N~0 (- 1)))) (+ (* |v_ULTIMATE.start_main_~i~0#1_82| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_266) (+ (* |v_ULTIMATE.start_main_~i~0#1_80| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_268) |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse1) .cse2)))))) (< (+ |v_ULTIMATE.start_main_~i~0#1_82| 1) |v_ULTIMATE.start_main_~i~0#1_80|))) is different from false [2021-12-17 01:46:08,803 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_80| Int) (|v_ULTIMATE.start_main_~i~0#1_82| Int)) (or (< (+ |v_ULTIMATE.start_main_~i~0#1_80| 1) c_~N~0) (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse1 (= 0 (mod .cse3 c_~N~0)))) (let ((.cse0 (or (and (not .cse1) (< .cse3 0)) (forall ((v_ArrVal_268 Int) (v_ArrVal_266 Int)) (= 0 (select (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (mod (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) c_~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_82| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_266) (+ (* |v_ULTIMATE.start_main_~i~0#1_80| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_268) |c_ULTIMATE.start_main_~a~0#1.offset|))))) (.cse2 (<= 0 .cse3))) (and (or (<= 0 c_~N~0) (and .cse0 (or .cse1 (forall ((v_ArrVal_268 Int) (v_ArrVal_266 Int)) (= 0 (select (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ (mod (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) c_~N~0) c_~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_82| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_266) (+ (* |v_ULTIMATE.start_main_~i~0#1_80| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_268) |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse2))) (or (and .cse0 (or .cse1 (forall ((v_ArrVal_268 Int) (v_ArrVal_266 Int)) (= 0 (select (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ (mod (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) c_~N~0) (* c_~N~0 (- 1)))) (+ (* |v_ULTIMATE.start_main_~i~0#1_82| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_266) (+ (* |v_ULTIMATE.start_main_~i~0#1_80| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_268) |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse2)) (< c_~N~0 0)))))) (< (+ |v_ULTIMATE.start_main_~i~0#1_82| 1) |v_ULTIMATE.start_main_~i~0#1_80|))) is different from false [2021-12-17 01:46:32,744 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-17 01:46:32,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 1 [2021-12-17 01:46:32,750 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2021-12-17 01:46:32,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:46:32,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114243749] [2021-12-17 01:46:32,751 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:46:32,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495717761] [2021-12-17 01:46:32,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495717761] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:46:32,751 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:46:32,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 35 [2021-12-17 01:46:32,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025587330] [2021-12-17 01:46:32,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:46:32,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-17 01:46:32,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:46:32,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-17 01:46:32,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=840, Unknown=7, NotChecked=186, Total=1190 [2021-12-17 01:46:32,753 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 35 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:46:47,117 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (and (not (= |c_ULTIMATE.start_main_~a~0#1.base| |ULTIMATE.start_main_~#sum~0#1.base|)) (= (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) 3))) (= 0 |c_ULTIMATE.start_main_~a~0#1.offset|) (< 2 c_~N~0) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_80| Int) (|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_268 Int) (v_ArrVal_266 Int)) (or (< (+ |v_ULTIMATE.start_main_~i~0#1_80| 1) c_~N~0) (= 0 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_266) (+ (* |v_ULTIMATE.start_main_~i~0#1_80| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_268) |c_ULTIMATE.start_main_~a~0#1.offset|)) (< (+ |ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_80|))) (= |c_ULTIMATE.start_main_~i~0#1| 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 3) (<= c_~N~0 3) (= 0 (select .cse0 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|))) (= (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) (mod 3 c_~N~0)))) is different from false [2021-12-17 01:46:48,380 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (and (not (= |c_ULTIMATE.start_main_~a~0#1.base| |ULTIMATE.start_main_~#sum~0#1.base|)) (= (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) 3))) (= 0 |c_ULTIMATE.start_main_~a~0#1.offset|) (< 2 c_~N~0) (forall ((|v_ULTIMATE.start_main_~i~0#1_80| Int) (|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_268 Int) (v_ArrVal_266 Int)) (or (< (+ |v_ULTIMATE.start_main_~i~0#1_80| 1) c_~N~0) (= 0 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_266) (+ (* |v_ULTIMATE.start_main_~i~0#1_80| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_268) |c_ULTIMATE.start_main_~a~0#1.offset|)) (< (+ |ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_80|))) (<= c_~N~0 3) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (mod 3 c_~N~0))) is different from false [2021-12-17 01:46:48,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:46:48,473 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2021-12-17 01:46:48,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-17 01:46:48,474 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 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 24 [2021-12-17 01:46:48,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:46:48,475 INFO L225 Difference]: With dead ends: 80 [2021-12-17 01:46:48,475 INFO L226 Difference]: Without dead ends: 75 [2021-12-17 01:46:48,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 39.9s TimeCoverageRelationStatistics Valid=189, Invalid=1079, Unknown=12, NotChecked=360, Total=1640 [2021-12-17 01:46:48,476 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 01:46:48,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 103 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 105 Invalid, 0 Unknown, 209 Unchecked, 0.1s Time] [2021-12-17 01:46:48,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-17 01:46:48,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 66. [2021-12-17 01:46:48,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 65 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:46:48,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2021-12-17 01:46:48,485 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 24 [2021-12-17 01:46:48,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:46:48,485 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2021-12-17 01:46:48,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:46:48,486 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2021-12-17 01:46:48,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-17 01:46:48,486 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:46:48,486 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:46:48,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-17 01:46:48,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:46:48,701 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:46:48,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:46:48,702 INFO L85 PathProgramCache]: Analyzing trace with hash 778799246, now seen corresponding path program 7 times [2021-12-17 01:46:48,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:46:48,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020815962] [2021-12-17 01:46:48,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:46:48,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:46:48,721 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:46:48,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765280371] [2021-12-17 01:46:48,722 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-17 01:46:48,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:46:48,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:46:48,723 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 01:46:48,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-17 01:46:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 01:46:48,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-17 01:46:48,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:46:48,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-17 01:46:48,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2021-12-17 01:46:48,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-17 01:46:48,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-17 01:46:48,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-17 01:46:48,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-12-17 01:46:49,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2021-12-17 01:46:49,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:46:49,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-17 01:46:49,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:46:49,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-17 01:46:49,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:46:49,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-17 01:46:49,551 INFO L388 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 41 treesize of output 25 [2021-12-17 01:46:49,584 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:46:49,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:46:51,672 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_97| Int)) (or (forall ((v_ArrVal_334 Int)) (= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_97| 4)) v_ArrVal_334) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~0#1_97| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-12-17 01:46:53,739 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_98| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_98| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_334 Int) (v_ArrVal_331 Int) (|v_ULTIMATE.start_main_~i~0#1_97| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_97| (+ |v_ULTIMATE.start_main_~i~0#1_98| 1)) (= 0 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_98| 4)) v_ArrVal_331) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_97| 4)) v_ArrVal_334) |c_ULTIMATE.start_main_~a~0#1.offset|)))))) is different from false [2021-12-17 01:46:55,765 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_334 Int) (v_ArrVal_331 Int) (|v_ULTIMATE.start_main_~i~0#1_98| Int) (|v_ULTIMATE.start_main_~i~0#1_97| Int) (v_ArrVal_329 Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_97| (+ |v_ULTIMATE.start_main_~i~0#1_98| 1)) (< |v_ULTIMATE.start_main_~i~0#1_98| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= 0 (select (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_329) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_98| 4)) v_ArrVal_331) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_97| 4)) v_ArrVal_334) |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2021-12-17 01:46:57,835 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_99| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_99| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_334 Int) (v_ArrVal_331 Int) (|v_ULTIMATE.start_main_~i~0#1_98| Int) (|v_ULTIMATE.start_main_~i~0#1_97| Int) (v_ArrVal_329 Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_97| (+ |v_ULTIMATE.start_main_~i~0#1_98| 1)) (= 0 (select (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_99| 4)) v_ArrVal_329) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_98| 4)) v_ArrVal_331) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_97| 4)) v_ArrVal_334) |c_ULTIMATE.start_main_~a~0#1.offset|)) (< |v_ULTIMATE.start_main_~i~0#1_98| (+ |v_ULTIMATE.start_main_~i~0#1_99| 1)))))) is different from false [2021-12-17 01:47:28,197 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-17 01:47:28,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 1 [2021-12-17 01:47:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2021-12-17 01:47:28,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:47:28,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020815962] [2021-12-17 01:47:28,203 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:47:28,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765280371] [2021-12-17 01:47:28,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765280371] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:47:28,203 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:47:28,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 39 [2021-12-17 01:47:28,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245685288] [2021-12-17 01:47:28,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:47:28,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-17 01:47:28,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:47:28,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-17 01:47:28,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1020, Unknown=11, NotChecked=276, Total=1482 [2021-12-17 01:47:28,208 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:47:58,602 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((~N~0 Int)) (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|)) (mod 4 ~N~0)) (<= ~N~0 4) (< 3 ~N~0))) (= 0 |c_ULTIMATE.start_main_~a~0#1.offset|) (forall ((|v_ULTIMATE.start_main_~i~0#1_99| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_99| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_334 Int) (v_ArrVal_331 Int) (|v_ULTIMATE.start_main_~i~0#1_98| Int) (|v_ULTIMATE.start_main_~i~0#1_97| Int) (v_ArrVal_329 Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_97| (+ |v_ULTIMATE.start_main_~i~0#1_98| 1)) (= 0 (select (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_99| 4)) v_ArrVal_329) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_98| 4)) v_ArrVal_331) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_97| 4)) v_ArrVal_334) |c_ULTIMATE.start_main_~a~0#1.offset|)) (< |v_ULTIMATE.start_main_~i~0#1_98| (+ |v_ULTIMATE.start_main_~i~0#1_99| 1)))))) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (and (not (= |c_ULTIMATE.start_main_~a~0#1.base| |ULTIMATE.start_main_~#sum~0#1.base|)) (= (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) 4))) (= |c_ULTIMATE.start_main_~i~0#1| 0)) is different from false [2021-12-17 01:48:09,238 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_99| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_99| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_334 Int) (v_ArrVal_331 Int) (|v_ULTIMATE.start_main_~i~0#1_98| Int) (|v_ULTIMATE.start_main_~i~0#1_97| Int) (v_ArrVal_329 Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_97| (+ |v_ULTIMATE.start_main_~i~0#1_98| 1)) (= 0 (select (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_99| 4)) v_ArrVal_329) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_98| 4)) v_ArrVal_331) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_97| 4)) v_ArrVal_334) |c_ULTIMATE.start_main_~a~0#1.offset|)) (< |v_ULTIMATE.start_main_~i~0#1_98| (+ |v_ULTIMATE.start_main_~i~0#1_99| 1)))))) (forall ((|v_ULTIMATE.start_main_~i~0#1_97| Int)) (or (forall ((v_ArrVal_334 Int)) (= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_97| 4)) v_ArrVal_334) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~0#1_97| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= 0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2021-12-17 01:48:11,244 WARN L838 $PredicateComparison]: unable to prove that (and (= 0 |c_ULTIMATE.start_main_~a~0#1.offset|) (forall ((|v_ULTIMATE.start_main_~i~0#1_99| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_99| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_334 Int) (v_ArrVal_331 Int) (|v_ULTIMATE.start_main_~i~0#1_98| Int) (|v_ULTIMATE.start_main_~i~0#1_97| Int) (v_ArrVal_329 Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_97| (+ |v_ULTIMATE.start_main_~i~0#1_98| 1)) (= 0 (select (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_99| 4)) v_ArrVal_329) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_98| 4)) v_ArrVal_331) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_97| 4)) v_ArrVal_334) |c_ULTIMATE.start_main_~a~0#1.offset|)) (< |v_ULTIMATE.start_main_~i~0#1_98| (+ |v_ULTIMATE.start_main_~i~0#1_99| 1)))))) (exists ((~N~0 Int)) (and (<= ~N~0 4) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (mod 4 ~N~0)) (< 3 ~N~0))) (forall ((|v_ULTIMATE.start_main_~i~0#1_98| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_98| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_334 Int) (v_ArrVal_331 Int) (|v_ULTIMATE.start_main_~i~0#1_97| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_97| (+ |v_ULTIMATE.start_main_~i~0#1_98| 1)) (= 0 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_98| 4)) v_ArrVal_331) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_97| 4)) v_ArrVal_334) |c_ULTIMATE.start_main_~a~0#1.offset|)))))) (forall ((|v_ULTIMATE.start_main_~i~0#1_97| Int)) (or (forall ((v_ArrVal_334 Int)) (= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_97| 4)) v_ArrVal_334) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~0#1_97| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (and (not (= |c_ULTIMATE.start_main_~a~0#1.base| |ULTIMATE.start_main_~#sum~0#1.base|)) (= (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) 4))) (<= 1 |c_ULTIMATE.start_main_~i~0#1|)) is different from false [2021-12-17 01:48:12,865 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_334 Int) (v_ArrVal_331 Int) (|v_ULTIMATE.start_main_~i~0#1_98| Int) (|v_ULTIMATE.start_main_~i~0#1_97| Int) (v_ArrVal_329 Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_97| (+ |v_ULTIMATE.start_main_~i~0#1_98| 1)) (< |v_ULTIMATE.start_main_~i~0#1_98| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (= 0 (select (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_329) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_98| 4)) v_ArrVal_331) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_97| 4)) v_ArrVal_334) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (forall ((v_ArrVal_334 Int)) (= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_334) |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2021-12-17 01:48:14,896 WARN L838 $PredicateComparison]: unable to prove that (and (= 0 |c_ULTIMATE.start_main_~a~0#1.offset|) (forall ((|v_ULTIMATE.start_main_~i~0#1_99| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_99| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_334 Int) (v_ArrVal_331 Int) (|v_ULTIMATE.start_main_~i~0#1_98| Int) (|v_ULTIMATE.start_main_~i~0#1_97| Int) (v_ArrVal_329 Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_97| (+ |v_ULTIMATE.start_main_~i~0#1_98| 1)) (= 0 (select (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_99| 4)) v_ArrVal_329) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_98| 4)) v_ArrVal_331) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_97| 4)) v_ArrVal_334) |c_ULTIMATE.start_main_~a~0#1.offset|)) (< |v_ULTIMATE.start_main_~i~0#1_98| (+ |v_ULTIMATE.start_main_~i~0#1_99| 1)))))) (exists ((~N~0 Int)) (and (<= ~N~0 4) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) (mod 4 ~N~0)) (< 3 ~N~0))) (forall ((|v_ULTIMATE.start_main_~i~0#1_98| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_98| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_334 Int) (v_ArrVal_331 Int) (|v_ULTIMATE.start_main_~i~0#1_97| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_97| (+ |v_ULTIMATE.start_main_~i~0#1_98| 1)) (= 0 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_98| 4)) v_ArrVal_331) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_97| 4)) v_ArrVal_334) |c_ULTIMATE.start_main_~a~0#1.offset|)))))) (forall ((|v_ULTIMATE.start_main_~i~0#1_97| Int)) (or (forall ((v_ArrVal_334 Int)) (= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_97| 4)) v_ArrVal_334) |c_ULTIMATE.start_main_~a~0#1.offset|))) (< |v_ULTIMATE.start_main_~i~0#1_97| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (and (not (= |c_ULTIMATE.start_main_~a~0#1.base| |ULTIMATE.start_main_~#sum~0#1.base|)) (= (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) 4))) (<= 2 |c_ULTIMATE.start_main_~i~0#1|)) is different from false [2021-12-17 01:48:17,092 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_98| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_98| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_334 Int) (v_ArrVal_331 Int) (|v_ULTIMATE.start_main_~i~0#1_97| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_97| (+ |v_ULTIMATE.start_main_~i~0#1_98| 1)) (= 0 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_98| 4)) v_ArrVal_331) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_97| 4)) v_ArrVal_334) |c_ULTIMATE.start_main_~a~0#1.offset|)))))) (= 0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2021-12-17 01:48:17,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:48:17,108 INFO L93 Difference]: Finished difference Result 119 states and 138 transitions. [2021-12-17 01:48:17,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-12-17 01:48:17,109 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 states have internal predecessors, (52), 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 28 [2021-12-17 01:48:17,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:48:17,109 INFO L225 Difference]: With dead ends: 119 [2021-12-17 01:48:17,109 INFO L226 Difference]: Without dead ends: 114 [2021-12-17 01:48:17,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 74.1s TimeCoverageRelationStatistics Valid=277, Invalid=1713, Unknown=30, NotChecked=950, Total=2970 [2021-12-17 01:48:17,111 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 13 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 373 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 01:48:17,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 150 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 373 Unchecked, 0.1s Time] [2021-12-17 01:48:17,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-17 01:48:17,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 75. [2021-12-17 01:48:17,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.1756756756756757) internal successors, (87), 74 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:48:17,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2021-12-17 01:48:17,121 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 28 [2021-12-17 01:48:17,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:48:17,122 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2021-12-17 01:48:17,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:48:17,122 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2021-12-17 01:48:17,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-17 01:48:17,123 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:48:17,123 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:48:17,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-17 01:48:17,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-17 01:48:17,328 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:48:17,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:48:17,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1146912830, now seen corresponding path program 2 times [2021-12-17 01:48:17,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:48:17,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451660940] [2021-12-17 01:48:17,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:48:17,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:48:17,342 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:48:17,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1687235823] [2021-12-17 01:48:17,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 01:48:17,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:48:17,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:48:17,344 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 01:48:17,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-17 01:48:17,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 01:48:17,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 01:48:17,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-17 01:48:17,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:48:17,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-17 01:48:17,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2021-12-17 01:48:17,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-12-17 01:48:17,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-12-17 01:48:17,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-12-17 01:48:17,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 41 [2021-12-17 01:48:17,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:48:17,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2021-12-17 01:48:17,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:48:17,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 51 [2021-12-17 01:48:18,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 33 [2021-12-17 01:48:19,048 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:48:19,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:48:59,991 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 17 refuted. 5 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:48:59,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:48:59,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451660940] [2021-12-17 01:48:59,992 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:48:59,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687235823] [2021-12-17 01:48:59,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687235823] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:48:59,992 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:48:59,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 32 [2021-12-17 01:48:59,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130982779] [2021-12-17 01:48:59,992 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:48:59,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-17 01:48:59,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:48:59,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-17 01:48:59,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=823, Unknown=11, NotChecked=0, Total=992 [2021-12-17 01:48:59,993 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:49:00,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:49:00,516 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2021-12-17 01:49:00,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 01:49:00,517 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 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 32 [2021-12-17 01:49:00,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:49:00,518 INFO L225 Difference]: With dead ends: 81 [2021-12-17 01:49:00,518 INFO L226 Difference]: Without dead ends: 60 [2021-12-17 01:49:00,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 33.3s TimeCoverageRelationStatistics Valid=165, Invalid=880, Unknown=11, NotChecked=0, Total=1056 [2021-12-17 01:49:00,519 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 28 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 01:49:00,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 162 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 172 Invalid, 0 Unknown, 101 Unchecked, 0.3s Time] [2021-12-17 01:49:00,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-17 01:49:00,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2021-12-17 01:49:00,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:49:00,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2021-12-17 01:49:00,527 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 32 [2021-12-17 01:49:00,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:49:00,527 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2021-12-17 01:49:00,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:49:00,527 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2021-12-17 01:49:00,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-17 01:49:00,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:49:00,528 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:49:00,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-17 01:49:00,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:49:00,731 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:49:00,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:49:00,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1910230140, now seen corresponding path program 3 times [2021-12-17 01:49:00,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:49:00,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938065593] [2021-12-17 01:49:00,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:49:00,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:49:00,745 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:49:00,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703588492] [2021-12-17 01:49:00,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-17 01:49:00,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:49:00,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:49:00,748 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 01:49:00,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-17 01:49:00,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-17 01:49:00,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 01:49:00,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 57 conjunts are in the unsatisfiable core [2021-12-17 01:49:00,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:49:00,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-17 01:49:00,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2021-12-17 01:49:00,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-12-17 01:49:00,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-12-17 01:49:00,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-12-17 01:49:00,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-12-17 01:49:00,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 41 [2021-12-17 01:49:01,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:49:01,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 53 [2021-12-17 01:49:01,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:49:01,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:49:01,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:49:01,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 48 [2021-12-17 01:49:01,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:49:01,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:49:01,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:49:01,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 48 [2021-12-17 01:49:02,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 33 [2021-12-17 01:49:02,981 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:49:02,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:49:05,451 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_128| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_128| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_452 Int)) (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_128| 4)) v_ArrVal_452))) (or (not (= 0 (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|))) (= 0 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))))))) is different from false [2021-12-17 01:49:12,796 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_129| Int)) (or (forall ((v_ArrVal_452 Int) (v_ArrVal_450 Int) (|v_ULTIMATE.start_main_~i~0#1_128| Int)) (let ((.cse0 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_129| 4)) v_ArrVal_450) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_128| 4)) v_ArrVal_452))) (or (= 0 (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (< |v_ULTIMATE.start_main_~i~0#1_128| (+ |v_ULTIMATE.start_main_~i~0#1_129| 1)) (not (= 0 (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|)))))) (< |v_ULTIMATE.start_main_~i~0#1_129| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-12-17 01:54:30,207 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 18 refuted. 9 times theorem prover too weak. 0 trivial. 5 not checked. [2021-12-17 01:54:30,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:54:30,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938065593] [2021-12-17 01:54:30,207 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:54:30,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703588492] [2021-12-17 01:54:30,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703588492] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:54:30,208 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:54:30,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 36 [2021-12-17 01:54:30,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084348657] [2021-12-17 01:54:30,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:54:30,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-17 01:54:30,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:54:30,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-17 01:54:30,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=902, Unknown=40, NotChecked=130, Total=1260 [2021-12-17 01:54:30,210 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:54:32,450 WARN L838 $PredicateComparison]: unable to prove that (and (= 0 |c_ULTIMATE.start_main_~a~0#1.offset|) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (~N~0 Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (mod .cse0 ~N~0))) (and (<= 4 .cse0) (= (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse2) (= (select .cse1 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|)) .cse2) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |ULTIMATE.start_main_~#sum~0#1.base|)))))) (forall ((|v_ULTIMATE.start_main_~i~0#1_129| Int)) (or (forall ((v_ArrVal_452 Int) (v_ArrVal_450 Int) (|v_ULTIMATE.start_main_~i~0#1_128| Int)) (let ((.cse3 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_129| 4)) v_ArrVal_450) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_128| 4)) v_ArrVal_452))) (or (= 0 (select .cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (< |v_ULTIMATE.start_main_~i~0#1_128| (+ |v_ULTIMATE.start_main_~i~0#1_129| 1)) (not (= 0 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|)))))) (< |v_ULTIMATE.start_main_~i~0#1_129| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= |c_ULTIMATE.start_main_~i~0#1| 1)) is different from false [2021-12-17 01:54:34,467 WARN L838 $PredicateComparison]: unable to prove that (and (= 0 |c_ULTIMATE.start_main_~a~0#1.offset|) (exists ((|ULTIMATE.start_main_~#sum~0#1.base| Int) (~N~0 Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (mod .cse0 ~N~0))) (and (<= 4 .cse0) (= (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse2) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |ULTIMATE.start_main_~#sum~0#1.base|)) (= (select .cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) .cse2))))) (forall ((|v_ULTIMATE.start_main_~i~0#1_128| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_128| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_452 Int)) (let ((.cse3 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_128| 4)) v_ArrVal_452))) (or (not (= 0 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.offset|))) (= 0 (select .cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))))))) (forall ((|v_ULTIMATE.start_main_~i~0#1_129| Int)) (or (forall ((v_ArrVal_452 Int) (v_ArrVal_450 Int) (|v_ULTIMATE.start_main_~i~0#1_128| Int)) (let ((.cse4 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_129| 4)) v_ArrVal_450) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_128| 4)) v_ArrVal_452))) (or (= 0 (select .cse4 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (< |v_ULTIMATE.start_main_~i~0#1_128| (+ |v_ULTIMATE.start_main_~i~0#1_129| 1)) (not (= 0 (select .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|)))))) (< |v_ULTIMATE.start_main_~i~0#1_129| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (<= 2 |c_ULTIMATE.start_main_~i~0#1|)) is different from false [2021-12-17 01:54:34,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:54:34,490 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2021-12-17 01:54:34,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 01:54:34,490 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 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 32 [2021-12-17 01:54:34,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:54:34,491 INFO L225 Difference]: With dead ends: 66 [2021-12-17 01:54:34,491 INFO L226 Difference]: Without dead ends: 64 [2021-12-17 01:54:34,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 105.6s TimeCoverageRelationStatistics Valid=192, Invalid=904, Unknown=42, NotChecked=268, Total=1406 [2021-12-17 01:54:34,492 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 19 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 01:54:34,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 137 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 102 Unchecked, 0.2s Time] [2021-12-17 01:54:34,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-17 01:54:34,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2021-12-17 01:54:34,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 60 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:54:34,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2021-12-17 01:54:34,505 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 32 [2021-12-17 01:54:34,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:54:34,505 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2021-12-17 01:54:34,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:54:34,506 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2021-12-17 01:54:34,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-17 01:54:34,506 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:54:34,506 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:54:34,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-17 01:54:34,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-17 01:54:34,719 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:54:34,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:54:34,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1150671498, now seen corresponding path program 8 times [2021-12-17 01:54:34,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:54:34,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868091617] [2021-12-17 01:54:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:54:34,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:54:34,736 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:54:34,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713856009] [2021-12-17 01:54:34,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 01:54:34,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:54:34,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:54:34,737 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 01:54:34,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-17 01:54:34,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 01:54:34,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 01:54:34,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 01:54:34,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:54:34,936 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 01:54:34,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:54:35,072 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 01:54:35,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:54:35,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868091617] [2021-12-17 01:54:35,073 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:54:35,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713856009] [2021-12-17 01:54:35,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713856009] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:54:35,073 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:54:35,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-17 01:54:35,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831195896] [2021-12-17 01:54:35,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:54:35,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 01:54:35,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:54:35,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 01:54:35,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-17 01:54:35,074 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 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) [2021-12-17 01:54:35,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:54:35,332 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2021-12-17 01:54:35,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 01:54:35,332 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 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) Word has length 32 [2021-12-17 01:54:35,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:54:35,333 INFO L225 Difference]: With dead ends: 76 [2021-12-17 01:54:35,333 INFO L226 Difference]: Without dead ends: 71 [2021-12-17 01:54:35,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-17 01:54:35,334 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 115 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 01:54:35,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 44 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 01:54:35,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-12-17 01:54:35,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2021-12-17 01:54:35,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 60 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:54:35,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2021-12-17 01:54:35,341 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 32 [2021-12-17 01:54:35,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:54:35,342 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2021-12-17 01:54:35,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 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) [2021-12-17 01:54:35,342 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2021-12-17 01:54:35,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-17 01:54:35,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:54:35,343 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:54:35,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-17 01:54:35,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-17 01:54:35,547 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:54:35,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:54:35,548 INFO L85 PathProgramCache]: Analyzing trace with hash -660869176, now seen corresponding path program 9 times [2021-12-17 01:54:35,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:54:35,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962429267] [2021-12-17 01:54:35,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:54:35,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:54:35,561 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:54:35,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512929437] [2021-12-17 01:54:35,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-17 01:54:35,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:54:35,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:54:35,562 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 01:54:35,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-17 01:54:35,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-12-17 01:54:35,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 01:54:35,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-17 01:54:35,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:54:35,776 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 9 proven. 44 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-17 01:54:35,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:54:35,966 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 9 proven. 44 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-17 01:54:35,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 01:54:35,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962429267] [2021-12-17 01:54:35,966 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 01:54:35,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512929437] [2021-12-17 01:54:35,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512929437] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 01:54:35,966 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 01:54:35,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-12-17 01:54:35,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60914515] [2021-12-17 01:54:35,967 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 01:54:35,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-17 01:54:35,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 01:54:35,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-17 01:54:35,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-12-17 01:54:35,968 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:54:36,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 01:54:36,333 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2021-12-17 01:54:36,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 01:54:36,334 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 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 34 [2021-12-17 01:54:36,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 01:54:36,334 INFO L225 Difference]: With dead ends: 81 [2021-12-17 01:54:36,334 INFO L226 Difference]: Without dead ends: 76 [2021-12-17 01:54:36,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2021-12-17 01:54:36,335 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 111 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 01:54:36,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 76 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 01:54:36,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-12-17 01:54:36,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 58. [2021-12-17 01:54:36,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 57 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:54:36,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2021-12-17 01:54:36,341 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 34 [2021-12-17 01:54:36,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 01:54:36,341 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2021-12-17 01:54:36,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 01:54:36,342 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2021-12-17 01:54:36,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-17 01:54:36,342 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 01:54:36,342 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 01:54:36,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-17 01:54:36,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-17 01:54:36,547 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 01:54:36,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 01:54:36,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1157467270, now seen corresponding path program 4 times [2021-12-17 01:54:36,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 01:54:36,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395084895] [2021-12-17 01:54:36,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 01:54:36,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 01:54:36,559 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 01:54:36,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898929174] [2021-12-17 01:54:36,559 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-17 01:54:36,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 01:54:36,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 01:54:36,560 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 01:54:36,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-17 01:54:36,626 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-17 01:54:36,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 01:54:36,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-17 01:54:36,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 01:54:36,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-17 01:54:36,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2021-12-17 01:54:36,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2021-12-17 01:54:36,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2021-12-17 01:54:36,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2021-12-17 01:54:36,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:54:36,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-17 01:54:36,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:54:36,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 41 [2021-12-17 01:54:37,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:54:37,171 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-12-17 01:54:37,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 55 [2021-12-17 01:54:37,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:54:37,444 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-12-17 01:54:37,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 50 [2021-12-17 01:54:39,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 01:54:39,661 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-17 01:54:39,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 33 [2021-12-17 01:54:39,844 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 01:54:39,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 01:55:18,511 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_183| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_183| (+ |c_ULTIMATE.start_main_~i~0#1| 2)) (let ((.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (= 0 (mod .cse5 c_~N~0)))) (let ((.cse1 (<= 0 .cse5)) (.cse3 (or (and (not .cse0) (< .cse5 0)) (forall ((v_ArrVal_627 Int)) (let ((.cse6 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4) (mod (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) c_~N~0)) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_183| 4)) v_ArrVal_627))) (or (not (= 0 (select .cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (= 0 (select .cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))))))))) (and (or (and (or .cse0 .cse1 (forall ((v_ArrVal_627 Int)) (let ((.cse2 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4) (+ (mod (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) c_~N~0) (* c_~N~0 (- 1)))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_183| 4)) v_ArrVal_627))) (or (not (= 0 (select .cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (= 0 (select .cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))))))) .cse3) (< c_~N~0 0)) (or (and (or .cse0 (forall ((v_ArrVal_627 Int)) (let ((.cse4 (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4) (+ (mod (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) c_~N~0) c_~N~0)) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_183| 4)) v_ArrVal_627))) (or (= 0 (select .cse4 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (not (= 0 (select .cse4 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))))) .cse1) .cse3) (<= 0 c_~N~0)))))))) is different from false Killed by 15