./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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/nla-digbench-scaling/ps4-ll_valuebound100.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 787aa3251fe70c0757344936f9e5c92841f1fb61138cb758df556e9684a50783 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 19:14:04,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 19:14:04,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 19:14:04,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 19:14:04,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 19:14:04,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 19:14:04,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 19:14:04,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 19:14:04,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 19:14:04,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 19:14:04,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 19:14:04,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 19:14:04,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 19:14:04,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 19:14:04,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 19:14:04,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 19:14:04,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 19:14:04,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 19:14:04,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 19:14:04,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 19:14:04,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 19:14:04,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 19:14:04,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 19:14:04,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 19:14:04,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 19:14:04,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 19:14:04,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 19:14:04,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 19:14:04,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 19:14:04,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 19:14:04,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 19:14:04,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 19:14:04,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 19:14:04,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 19:14:04,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 19:14:04,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 19:14:04,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 19:14:04,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 19:14:04,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 19:14:04,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 19:14:04,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 19:14:04,484 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 19:14:04,508 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 19:14:04,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 19:14:04,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 19:14:04,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 19:14:04,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 19:14:04,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 19:14:04,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 19:14:04,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 19:14:04,510 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 19:14:04,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 19:14:04,511 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 19:14:04,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 19:14:04,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 19:14:04,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 19:14:04,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 19:14:04,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 19:14:04,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 19:14:04,512 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 19:14:04,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 19:14:04,513 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 19:14:04,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 19:14:04,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 19:14:04,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 19:14:04,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 19:14:04,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 19:14:04,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 19:14:04,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 19:14:04,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 19:14:04,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 19:14:04,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 19:14:04,515 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 19:14:04,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 19:14:04,515 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 19:14:04,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 19:14:04,515 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 19:14:04,515 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 787aa3251fe70c0757344936f9e5c92841f1fb61138cb758df556e9684a50783 [2023-02-18 19:14:04,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 19:14:04,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 19:14:04,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 19:14:04,749 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 19:14:04,749 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 19:14:04,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound100.c [2023-02-18 19:14:05,733 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 19:14:05,881 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 19:14:05,881 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound100.c [2023-02-18 19:14:05,901 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711536907/93517218747341c698943d74afc6b7c0/FLAGbeb7d622d [2023-02-18 19:14:05,921 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711536907/93517218747341c698943d74afc6b7c0 [2023-02-18 19:14:05,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 19:14:05,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 19:14:05,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 19:14:05,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 19:14:05,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 19:14:05,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:14:05" (1/1) ... [2023-02-18 19:14:05,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8e9797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:14:05, skipping insertion in model container [2023-02-18 19:14:05,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:14:05" (1/1) ... [2023-02-18 19:14:05,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 19:14:05,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 19:14:06,043 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound100.c[458,471] [2023-02-18 19:14:06,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 19:14:06,058 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 19:14:06,065 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound100.c[458,471] [2023-02-18 19:14:06,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 19:14:06,076 INFO L208 MainTranslator]: Completed translation [2023-02-18 19:14:06,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:14:06 WrapperNode [2023-02-18 19:14:06,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 19:14:06,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 19:14:06,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 19:14:06,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 19:14:06,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:14:06" (1/1) ... [2023-02-18 19:14:06,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:14:06" (1/1) ... [2023-02-18 19:14:06,095 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2023-02-18 19:14:06,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 19:14:06,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 19:14:06,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 19:14:06,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 19:14:06,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:14:06" (1/1) ... [2023-02-18 19:14:06,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:14:06" (1/1) ... [2023-02-18 19:14:06,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:14:06" (1/1) ... [2023-02-18 19:14:06,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:14:06" (1/1) ... [2023-02-18 19:14:06,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:14:06" (1/1) ... [2023-02-18 19:14:06,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:14:06" (1/1) ... [2023-02-18 19:14:06,113 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:14:06" (1/1) ... [2023-02-18 19:14:06,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:14:06" (1/1) ... [2023-02-18 19:14:06,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 19:14:06,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 19:14:06,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 19:14:06,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 19:14:06,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:14:06" (1/1) ... [2023-02-18 19:14:06,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 19:14:06,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:14:06,139 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) [2023-02-18 19:14:06,153 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 [2023-02-18 19:14:06,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 19:14:06,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 19:14:06,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 19:14:06,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 19:14:06,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 19:14:06,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 19:14:06,222 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 19:14:06,223 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 19:14:06,354 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 19:14:06,358 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 19:14:06,359 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 19:14:06,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:14:06 BoogieIcfgContainer [2023-02-18 19:14:06,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 19:14:06,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 19:14:06,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 19:14:06,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 19:14:06,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 07:14:05" (1/3) ... [2023-02-18 19:14:06,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70db4a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:14:06, skipping insertion in model container [2023-02-18 19:14:06,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:14:06" (2/3) ... [2023-02-18 19:14:06,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70db4a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:14:06, skipping insertion in model container [2023-02-18 19:14:06,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:14:06" (3/3) ... [2023-02-18 19:14:06,367 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound100.c [2023-02-18 19:14:06,378 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 19:14:06,378 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 19:14:06,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 19:14:06,420 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4bf98bc4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 19:14:06,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 19:14:06,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 19:14:06,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 19:14:06,428 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:14:06,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:14:06,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:14:06,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:14:06,434 INFO L85 PathProgramCache]: Analyzing trace with hash -589436290, now seen corresponding path program 1 times [2023-02-18 19:14:06,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:14:06,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667274501] [2023-02-18 19:14:06,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:14:06,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:14:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:14:06,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:14:06,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667274501] [2023-02-18 19:14:06,512 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 19:14:06,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416340274] [2023-02-18 19:14:06,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:14:06,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:14:06,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:14:06,526 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) [2023-02-18 19:14:06,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 19:14:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:14:06,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 19:14:06,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:14:06,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 19:14:06,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 19:14:06,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416340274] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 19:14:06,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 19:14:06,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 19:14:06,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116195413] [2023-02-18 19:14:06,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 19:14:06,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 19:14:06,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:14:06,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 19:14:06,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 19:14:06,690 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 19:14:06,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:14:06,702 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2023-02-18 19:14:06,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 19:14:06,703 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-18 19:14:06,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:14:06,708 INFO L225 Difference]: With dead ends: 35 [2023-02-18 19:14:06,708 INFO L226 Difference]: Without dead ends: 15 [2023-02-18 19:14:06,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 19:14:06,714 INFO L413 NwaCegarLoop]: 21 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, 21 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 [2023-02-18 19:14:06,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 19:14:06,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-02-18 19:14:06,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-02-18 19:14:06,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 19:14:06,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-02-18 19:14:06,738 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2023-02-18 19:14:06,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:14:06,739 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-02-18 19:14:06,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 19:14:06,739 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-02-18 19:14:06,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 19:14:06,740 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:14:06,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:14:06,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-18 19:14:06,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-18 19:14:06,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:14:06,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:14:06,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1187358532, now seen corresponding path program 1 times [2023-02-18 19:14:06,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:14:06,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189212786] [2023-02-18 19:14:06,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:14:06,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:14:06,960 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:14:06,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [361093178] [2023-02-18 19:14:06,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:14:06,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:14:06,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:14:06,976 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) [2023-02-18 19:14:06,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 19:14:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:14:07,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 19:14:07,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:14:07,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 19:14:07,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 19:14:07,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:14:07,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189212786] [2023-02-18 19:14:07,057 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:14:07,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361093178] [2023-02-18 19:14:07,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361093178] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 19:14:07,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 19:14:07,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 19:14:07,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262944] [2023-02-18 19:14:07,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 19:14:07,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 19:14:07,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:14:07,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 19:14:07,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 19:14:07,060 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 19:14:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:14:07,101 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2023-02-18 19:14:07,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 19:14:07,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-18 19:14:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:14:07,102 INFO L225 Difference]: With dead ends: 26 [2023-02-18 19:14:07,103 INFO L226 Difference]: Without dead ends: 22 [2023-02-18 19:14:07,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-18 19:14:07,104 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 19:14:07,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 45 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 19:14:07,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-18 19:14:07,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-18 19:14:07,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 19:14:07,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-02-18 19:14:07,110 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2023-02-18 19:14:07,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:14:07,110 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-02-18 19:14:07,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 19:14:07,111 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-02-18 19:14:07,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 19:14:07,111 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:14:07,111 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:14:07,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-18 19:14:07,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-18 19:14:07,316 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:14:07,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:14:07,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1781398469, now seen corresponding path program 1 times [2023-02-18 19:14:07,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:14:07,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532305406] [2023-02-18 19:14:07,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:14:07,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:14:07,327 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:14:07,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [347147231] [2023-02-18 19:14:07,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:14:07,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:14:07,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:14:07,332 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) [2023-02-18 19:14:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:14:07,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 19:14:07,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-18 19:14:07,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:14:07,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 19:14:07,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:14:07,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 19:14:07,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:14:07,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532305406] [2023-02-18 19:14:07,717 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:14:07,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347147231] [2023-02-18 19:14:07,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347147231] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:14:07,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 19:14:07,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2023-02-18 19:14:07,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877073567] [2023-02-18 19:14:07,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 19:14:07,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 19:14:07,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:14:07,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 19:14:07,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-18 19:14:07,720 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 19:14:07,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:14:07,805 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-02-18 19:14:07,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 19:14:07,806 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-02-18 19:14:07,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:14:07,808 INFO L225 Difference]: With dead ends: 33 [2023-02-18 19:14:07,808 INFO L226 Difference]: Without dead ends: 27 [2023-02-18 19:14:07,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-02-18 19:14:07,811 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 19:14:07,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 58 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 19:14:07,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-18 19:14:07,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2023-02-18 19:14:07,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 19:14:07,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2023-02-18 19:14:07,826 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2023-02-18 19:14:07,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:14:07,826 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2023-02-18 19:14:07,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 19:14:07,827 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2023-02-18 19:14:07,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-18 19:14:07,828 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:14:07,828 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:14:07,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 19:14:08,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:14:08,033 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:14:08,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:14:08,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1711372296, now seen corresponding path program 1 times [2023-02-18 19:14:08,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:14:08,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993307155] [2023-02-18 19:14:08,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:14:08,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:14:08,054 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:14:08,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340174629] [2023-02-18 19:14:08,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:14:08,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:14:08,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:14:08,060 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) [2023-02-18 19:14:08,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 19:14:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:14:08,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-18 19:14:08,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:14:09,895 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 19:14:09,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:14:25,566 WARN L859 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| Int)) (or (= (mod (+ (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) 4) 0) (= 0 (+ (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (- (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)))))) (not (= |c___VERIFIER_assert_#in~cond| 0))) is different from true [2023-02-18 19:14:31,598 WARN L859 $PredicateComparison]: unable to prove that (or (= 0 c___VERIFIER_assert_~cond) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| Int)) (or (= (mod (+ (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) 4) 0) (= 0 (+ (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (- (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)))))) (not (= |c___VERIFIER_assert_#in~cond| 0))) is different from true [2023-02-18 19:14:35,625 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= 0 (let ((.cse0 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))) (+ (* |ULTIMATE.start_main_~k~0#1| .cse0) (- (* .cse0 .cse0))))) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)))) (not (= (mod (+ (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0))) is different from false [2023-02-18 19:14:35,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:14:35,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993307155] [2023-02-18 19:14:35,635 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:14:35,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340174629] [2023-02-18 19:14:35,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340174629] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:14:35,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 19:14:35,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-02-18 19:14:35,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615465664] [2023-02-18 19:14:35,636 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 19:14:35,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 19:14:35,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:14:35,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 19:14:35,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=120, Unknown=6, NotChecked=72, Total=240 [2023-02-18 19:14:35,638 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 19:14:35,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:14:35,711 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2023-02-18 19:14:35,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 19:14:35,712 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-02-18 19:14:35,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:14:35,715 INFO L225 Difference]: With dead ends: 31 [2023-02-18 19:14:35,715 INFO L226 Difference]: Without dead ends: 26 [2023-02-18 19:14:35,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=62, Invalid=184, Unknown=6, NotChecked=90, Total=342 [2023-02-18 19:14:35,719 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 19:14:35,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 60 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 19:14:35,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-18 19:14:35,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-02-18 19:14:35,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 19:14:35,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2023-02-18 19:14:35,730 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 22 [2023-02-18 19:14:35,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:14:35,730 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2023-02-18 19:14:35,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 19:14:35,730 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2023-02-18 19:14:35,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-18 19:14:35,731 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:14:35,732 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:14:35,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 19:14:35,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:14:35,937 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:14:35,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:14:35,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1075497887, now seen corresponding path program 2 times [2023-02-18 19:14:35,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:14:35,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718121723] [2023-02-18 19:14:35,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:14:35,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:14:35,947 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:14:35,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094321746] [2023-02-18 19:14:35,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 19:14:35,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:14:35,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:14:35,951 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) [2023-02-18 19:14:35,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 19:14:36,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 19:14:36,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:14:36,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-18 19:14:36,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:14:36,048 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 19:14:36,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:14:38,139 WARN L837 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= 0 (let ((.cse0 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))) (+ (* |ULTIMATE.start_main_~k~0#1| .cse0) (- (* .cse0 .cse0))))) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|))))) is different from false [2023-02-18 19:14:38,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:14:38,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718121723] [2023-02-18 19:14:38,142 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:14:38,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094321746] [2023-02-18 19:14:38,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094321746] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:14:38,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 19:14:38,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-02-18 19:14:38,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498439076] [2023-02-18 19:14:38,142 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 19:14:38,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 19:14:38,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:14:38,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 19:14:38,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=148, Unknown=1, NotChecked=24, Total=210 [2023-02-18 19:14:38,143 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 19:14:38,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:14:38,228 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2023-02-18 19:14:38,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 19:14:38,228 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2023-02-18 19:14:38,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:14:38,229 INFO L225 Difference]: With dead ends: 34 [2023-02-18 19:14:38,229 INFO L226 Difference]: Without dead ends: 29 [2023-02-18 19:14:38,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=56, Invalid=219, Unknown=1, NotChecked=30, Total=306 [2023-02-18 19:14:38,230 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 19:14:38,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 19:14:38,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-18 19:14:38,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-02-18 19:14:38,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 19:14:38,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-02-18 19:14:38,235 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 29 [2023-02-18 19:14:38,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:14:38,235 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-02-18 19:14:38,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 19:14:38,235 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-02-18 19:14:38,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-18 19:14:38,236 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:14:38,236 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:14:38,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 19:14:38,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:14:38,441 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:14:38,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:14:38,442 INFO L85 PathProgramCache]: Analyzing trace with hash 817917912, now seen corresponding path program 3 times [2023-02-18 19:14:38,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:14:38,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494243340] [2023-02-18 19:14:38,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:14:38,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:14:38,448 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:14:38,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680395585] [2023-02-18 19:14:38,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 19:14:38,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:14:38,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:14:38,449 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) [2023-02-18 19:14:38,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 19:14:38,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-18 19:14:38,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:14:38,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-18 19:14:38,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:14:40,526 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 1 1))) (and (= |c_ULTIMATE.start_main_~y~0#1| (+ 1 2)) (< .cse0 |c_ULTIMATE.start_main_~k~0#1|) (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0) (<= |c_ULTIMATE.start_main_~c~0#1| (+ 1 .cse0)))) is different from true [2023-02-18 19:14:42,530 WARN L859 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~y~0#1| (+ 1 2)) (<= |c_ULTIMATE.start_main_~k~0#1| 3) (< (+ 1 1) |c_ULTIMATE.start_main_~k~0#1|) (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) is different from true [2023-02-18 19:14:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 3 not checked. [2023-02-18 19:14:42,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:15:04,118 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| Int)) (or (= (mod (+ (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19|)) 4) 0) (= 0 (+ (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19|) (- (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19|))))))) is different from true [2023-02-18 19:15:10,148 WARN L859 $PredicateComparison]: unable to prove that (or (= 0 c___VERIFIER_assert_~cond) (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| Int)) (or (= (mod (+ (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19|)) 4) 0) (= 0 (+ (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19|) (- (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19|))))))) is different from true [2023-02-18 19:15:14,186 WARN L837 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= 0 (let ((.cse0 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))) (+ (* |ULTIMATE.start_main_~k~0#1| .cse0) (- (* .cse0 .cse0))))) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|))))) is different from false [2023-02-18 19:15:14,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:15:14,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494243340] [2023-02-18 19:15:14,191 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:15:14,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680395585] [2023-02-18 19:15:14,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680395585] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:15:14,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 19:15:14,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-02-18 19:15:14,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305751726] [2023-02-18 19:15:14,192 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 19:15:14,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 19:15:14,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:15:14,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 19:15:14,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=145, Unknown=12, NotChecked=140, Total=342 [2023-02-18 19:15:14,193 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 19:15:16,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:15:16,272 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2023-02-18 19:15:16,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 19:15:16,272 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2023-02-18 19:15:16,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:15:16,273 INFO L225 Difference]: With dead ends: 37 [2023-02-18 19:15:16,273 INFO L226 Difference]: Without dead ends: 32 [2023-02-18 19:15:16,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=58, Invalid=189, Unknown=13, NotChecked=160, Total=420 [2023-02-18 19:15:16,274 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 19:15:16,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 77 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 69 Unchecked, 0.1s Time] [2023-02-18 19:15:16,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-18 19:15:16,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-02-18 19:15:16,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 19:15:16,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2023-02-18 19:15:16,278 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 36 [2023-02-18 19:15:16,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:15:16,278 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2023-02-18 19:15:16,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 19:15:16,278 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2023-02-18 19:15:16,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-18 19:15:16,279 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:15:16,279 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:15:16,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 19:15:16,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:15:16,487 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:15:16,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:15:16,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1384689793, now seen corresponding path program 4 times [2023-02-18 19:15:16,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:15:16,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807574008] [2023-02-18 19:15:16,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:15:16,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:15:16,493 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:15:16,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824731858] [2023-02-18 19:15:16,493 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 19:15:16,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:15:16,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:15:16,500 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) [2023-02-18 19:15:16,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 19:15:16,545 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 19:15:16,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:15:16,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-18 19:15:16,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:15:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-18 19:15:16,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:15:31,600 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_12| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26| Int)) (or (= 0 (+ (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_12| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26|) (- (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26|)))) (= (mod (+ (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26|)) 4) 0)))) is different from true [2023-02-18 19:15:37,615 WARN L859 $PredicateComparison]: unable to prove that (or (= 0 c___VERIFIER_assert_~cond) (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_12| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26| Int)) (or (= 0 (+ (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_12| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26|) (- (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26|)))) (= (mod (+ (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_26|)) 4) 0)))) is different from true [2023-02-18 19:15:41,640 WARN L837 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= 0 (let ((.cse0 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))) (+ (* |ULTIMATE.start_main_~k~0#1| .cse0) (- (* .cse0 .cse0))))) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|))))) is different from false [2023-02-18 19:15:41,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:15:41,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807574008] [2023-02-18 19:15:41,644 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:15:41,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824731858] [2023-02-18 19:15:41,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824731858] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:15:41,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 19:15:41,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-02-18 19:15:41,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911391388] [2023-02-18 19:15:41,645 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 19:15:41,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 19:15:41,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:15:41,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 19:15:41,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=199, Unknown=5, NotChecked=90, Total=342 [2023-02-18 19:15:41,646 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 19:15:41,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:15:41,805 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2023-02-18 19:15:41,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 19:15:41,806 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 43 [2023-02-18 19:15:41,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:15:41,806 INFO L225 Difference]: With dead ends: 40 [2023-02-18 19:15:41,806 INFO L226 Difference]: Without dead ends: 35 [2023-02-18 19:15:41,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=68, Invalid=281, Unknown=5, NotChecked=108, Total=462 [2023-02-18 19:15:41,807 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 19:15:41,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 114 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 19:15:41,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-18 19:15:41,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-02-18 19:15:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 19:15:41,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2023-02-18 19:15:41,813 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 43 [2023-02-18 19:15:41,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:15:41,814 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2023-02-18 19:15:41,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 19:15:41,814 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2023-02-18 19:15:41,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-18 19:15:41,815 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:15:41,815 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:15:41,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-18 19:15:42,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:15:42,023 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:15:42,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:15:42,023 INFO L85 PathProgramCache]: Analyzing trace with hash -23130184, now seen corresponding path program 5 times [2023-02-18 19:15:42,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:15:42,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212639530] [2023-02-18 19:15:42,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:15:42,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:15:42,030 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:15:42,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504994095] [2023-02-18 19:15:42,030 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 19:15:42,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:15:42,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:15:42,032 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) [2023-02-18 19:15:42,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 19:15:42,109 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-02-18 19:15:42,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:15:42,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-18 19:15:42,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:15:44,129 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~c~0#1| (- 1)))) (and (= (+ |c_ULTIMATE.start_main_~y~0#1| (- 1)) 0) (< .cse0 |c_ULTIMATE.start_main_~k~0#1|) (= .cse0 0) (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0))) is different from true [2023-02-18 19:15:44,179 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 14 proven. 53 refuted. 0 times theorem prover too weak. 45 trivial. 5 not checked. [2023-02-18 19:15:44,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:15:46,327 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 1 (+ 1 (+ 1 |c_ULTIMATE.start_main_~c~0#1|))))) (or (not (< .cse0 |c_ULTIMATE.start_main_~k~0#1|)) (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (= 0 (let ((.cse1 (+ 1 (+ 1 (+ 1 (+ 1 |c_ULTIMATE.start_main_~y~0#1|)))))) (+ (* |c_ULTIMATE.start_main_~k~0#1| .cse1) (- (* .cse1 .cse1))))) (< (+ .cse0 1) |c_ULTIMATE.start_main_~k~0#1|))) is different from false [2023-02-18 19:15:50,344 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_23| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38| Int)) (or (= 0 (let ((.cse0 (+ 1 (+ 1 (+ 1 (+ 1 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38|)))))) (+ (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_23| .cse0) (- (* .cse0 .cse0))))) (= (mod (+ (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38|)) 4) 0)))) is different from true [2023-02-18 19:15:56,357 WARN L859 $PredicateComparison]: unable to prove that (or (= 0 c___VERIFIER_assert_~cond) (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_23| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38| Int)) (or (= 0 (let ((.cse0 (+ 1 (+ 1 (+ 1 (+ 1 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38|)))))) (+ (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_23| .cse0) (- (* .cse0 .cse0))))) (= (mod (+ (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_38|)) 4) 0)))) is different from true [2023-02-18 19:16:00,369 WARN L837 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (let ((.cse0 (+ 1 (+ 1 (+ 1 (+ 1 |c_ULTIMATE.start_main_~c~0#1|)))))) (or (< (+ .cse0 1) |ULTIMATE.start_main_~k~0#1|) (= 0 (let ((.cse1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))))))) (+ (* |ULTIMATE.start_main_~k~0#1| .cse1) (- (* .cse1 .cse1))))) (not (< .cse0 |ULTIMATE.start_main_~k~0#1|)) (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)))))) is different from false [2023-02-18 19:16:00,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:16:00,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212639530] [2023-02-18 19:16:00,373 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:16:00,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504994095] [2023-02-18 19:16:00,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504994095] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:16:00,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 19:16:00,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-02-18 19:16:00,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971852666] [2023-02-18 19:16:00,374 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 19:16:00,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-18 19:16:00,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:16:00,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-18 19:16:00,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=319, Unknown=5, NotChecked=200, Total=600 [2023-02-18 19:16:00,375 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 19:16:00,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:16:00,521 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2023-02-18 19:16:00,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 19:16:00,521 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 50 [2023-02-18 19:16:00,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:16:00,522 INFO L225 Difference]: With dead ends: 43 [2023-02-18 19:16:00,522 INFO L226 Difference]: Without dead ends: 38 [2023-02-18 19:16:00,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=95, Invalid=426, Unknown=5, NotChecked=230, Total=756 [2023-02-18 19:16:00,523 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 19:16:00,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 125 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 246 Invalid, 0 Unknown, 41 Unchecked, 0.1s Time] [2023-02-18 19:16:00,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-18 19:16:00,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-02-18 19:16:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 19:16:00,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2023-02-18 19:16:00,529 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 50 [2023-02-18 19:16:00,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:16:00,529 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2023-02-18 19:16:00,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 19:16:00,529 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2023-02-18 19:16:00,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-02-18 19:16:00,530 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:16:00,530 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:16:00,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-18 19:16:00,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-18 19:16:00,731 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:16:00,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:16:00,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1898941279, now seen corresponding path program 6 times [2023-02-18 19:16:00,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:16:00,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106730777] [2023-02-18 19:16:00,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:16:00,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:16:00,737 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:16:00,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042229619] [2023-02-18 19:16:00,739 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 19:16:00,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:16:00,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:16:00,749 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) [2023-02-18 19:16:00,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-18 19:16:00,820 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-02-18 19:16:00,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:16:00,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 52 conjunts are in the unsatisfiable core [2023-02-18 19:16:00,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:16:00,995 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 42 proven. 65 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-02-18 19:16:00,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:16:04,476 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))) (let ((.cse1 (* .cse0 .cse0))) (or (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| .cse0) (- .cse1))) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |c_ULTIMATE.start_main_~k~0#1|) (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (not (let ((.cse2 (- (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (.cse3 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse4 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (>= (+ (* |c_ULTIMATE.start_main_~y~0#1| 3) (div (+ .cse2 (* (- 6) .cse3) (* (- 13) .cse4)) (- 4)) 1) (+ (* .cse1 .cse0) (div (+ .cse2 (* (- 2) .cse3) (- .cse4)) (- 4)))))) (not (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~k~0#1|))))) is different from false [2023-02-18 19:16:19,322 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))) (let ((.cse4 (+ 1 .cse5))) (let ((.cse3 (+ 1 .cse4))) (let ((.cse1 (+ 1 .cse3))) (let ((.cse2 (* .cse1 .cse1)) (.cse0 (+ 1 (+ 1 (+ 1 |c_ULTIMATE.start_main_~c~0#1|))))) (or (not (< .cse0 |c_ULTIMATE.start_main_~k~0#1|)) (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| .cse1) (- .cse2))) (not (let ((.cse6 (- (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (.cse7 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse8 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (>= (+ (* .cse3 3) (+ (* .cse4 12) (+ (* .cse5 27) (+ (div (+ .cse6 (* (- 18) .cse7) (* (- 121) .cse8)) (- 4)) (* |c_ULTIMATE.start_main_~y~0#1| 48) 22) 12) 5) 1) (+ (* .cse2 .cse1) (+ (* .cse4 3) (+ (* .cse5 12) (+ (* |c_ULTIMATE.start_main_~y~0#1| 27) (div (+ .cse6 (* (- 14) .cse7) (* (- 73) .cse8)) (- 4)) 12) 5) 1))))) (< (+ .cse0 1) |c_ULTIMATE.start_main_~k~0#1|))))))) is different from false [2023-02-18 19:16:48,634 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 31 proven. 36 refuted. 0 times theorem prover too weak. 66 trivial. 28 not checked. [2023-02-18 19:16:48,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:16:48,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106730777] [2023-02-18 19:16:48,635 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:16:48,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042229619] [2023-02-18 19:16:48,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042229619] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:16:48,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 19:16:48,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 30 [2023-02-18 19:16:48,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308069492] [2023-02-18 19:16:48,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 19:16:48,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-18 19:16:48,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:16:48,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-18 19:16:48,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=632, Unknown=8, NotChecked=106, Total=870 [2023-02-18 19:16:48,637 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 30 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-18 19:17:07,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 19:17:36,623 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse20 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))) (let ((.cse2 (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~k~0#1|)) (.cse25 (* .cse20 .cse20)) (.cse21 (+ 1 |c_ULTIMATE.start_main_~c~0#1|)) (.cse19 (+ 1 .cse20)) (.cse13 (- (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (.cse14 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (let ((.cse1 (- .cse0)) (.cse5 (+ (* .cse19 3) (+ (* .cse20 12) (+ (* |c_ULTIMATE.start_main_~y~0#1| 27) (div (+ .cse13 (* (- 14) .cse14) (* (- 73) .cse0)) (- 4)) 12) 5) 1)) (.cse4 (+ 1 .cse21)) (.cse7 (+ 1 .cse19)) (.cse8 (+ (* .cse20 3) (+ (* |c_ULTIMATE.start_main_~y~0#1| 12) (div (+ .cse13 (* (- 10) .cse14) (* (- 37) .cse0)) (- 4)) 5) 1)) (.cse9 (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| .cse20) (- .cse25)))) (.cse10 (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |c_ULTIMATE.start_main_~k~0#1|)) (.cse3 (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0))) (.cse15 (not .cse2)) (.cse11 (+ (* |c_ULTIMATE.start_main_~y~0#1| 3) (div (+ .cse13 (* (- 6) .cse14) (* (- 13) .cse0)) (- 4)) 1)) (.cse12 (* .cse25 .cse20)) (.cse23 (<= |c_ULTIMATE.start_main_~k~0#1| 100)) (.cse24 (>= |c_ULTIMATE.start_main_~k~0#1| 0))) (and (or (not (= 0 (+ (+ (+ (* 4 |c_ULTIMATE.start_main_~x~0#1|) (- (* (* .cse0 |c_ULTIMATE.start_main_~y~0#1|) |c_ULTIMATE.start_main_~y~0#1|))) (- (* (* (* 2 |c_ULTIMATE.start_main_~y~0#1|) |c_ULTIMATE.start_main_~y~0#1|) |c_ULTIMATE.start_main_~y~0#1|))) .cse1))) .cse2 (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~y~0#1|) .cse1))) (let ((.cse6 (* .cse7 .cse7))) (or .cse3 (not (< .cse4 |c_ULTIMATE.start_main_~k~0#1|)) (< (+ .cse4 1) |c_ULTIMATE.start_main_~k~0#1|) (not (>= .cse5 (+ (* .cse6 .cse7) .cse8))) (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| .cse7) (- .cse6))))) (or .cse9 .cse10 .cse3 (not (>= .cse11 (+ .cse12 (div (+ .cse13 (* (- 2) .cse14) .cse1) (- 4))))) .cse15) (let ((.cse17 (+ 1 .cse7))) (let ((.cse18 (* .cse17 .cse17)) (.cse16 (+ 1 .cse4))) (or (not (< .cse16 |c_ULTIMATE.start_main_~k~0#1|)) .cse3 (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| .cse17) (- .cse18))) (not (>= (+ (* .cse7 3) (+ (* .cse19 12) (+ (* .cse20 27) (+ (div (+ .cse13 (* (- 18) .cse14) (* (- 121) .cse0)) (- 4)) (* |c_ULTIMATE.start_main_~y~0#1| 48) 22) 12) 5) 1) (+ (* .cse18 .cse17) .cse5))) (< (+ .cse16 1) |c_ULTIMATE.start_main_~k~0#1|)))) (let ((.cse22 (* .cse19 .cse19))) (or .cse3 (not (< .cse21 |c_ULTIMATE.start_main_~k~0#1|)) (not (>= .cse8 (+ (* .cse22 .cse19) .cse11))) (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| .cse19) (- .cse22))) (< (+ .cse21 1) |c_ULTIMATE.start_main_~k~0#1|))) .cse23 (or .cse9 .cse10 .cse3 .cse15 (not (>= .cse11 (+ .cse12 |c_ULTIMATE.start_main_~x~0#1|)))) (or (and (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (or (not .cse23) (not .cse24))) (and (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse23 .cse24)) .cse24)))) is different from false [2023-02-18 19:17:38,631 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse10 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))) (let ((.cse14 (+ 1 |c_ULTIMATE.start_main_~c~0#1|)) (.cse9 (+ 1 .cse10)) (.cse11 (- (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (.cse12 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse13 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (let ((.cse2 (+ (* .cse9 3) (+ (* .cse10 12) (+ (* |c_ULTIMATE.start_main_~y~0#1| 27) (div (+ .cse11 (* (- 14) .cse12) (* (- 73) .cse13)) (- 4)) 12) 5) 1)) (.cse1 (+ 1 .cse14)) (.cse4 (+ 1 .cse9)) (.cse5 (+ (* .cse10 3) (+ (* |c_ULTIMATE.start_main_~y~0#1| 12) (div (+ .cse11 (* (- 10) .cse12) (* (- 37) .cse13)) (- 4)) 5) 1)) (.cse0 (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0))) (.cse16 (+ (* |c_ULTIMATE.start_main_~y~0#1| 3) (div (+ .cse11 (* (- 6) .cse12) (* (- 13) .cse13)) (- 4)) 1)) (.cse18 (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~k~0#1|))) (and (let ((.cse3 (* .cse4 .cse4))) (or .cse0 (not (< .cse1 |c_ULTIMATE.start_main_~k~0#1|)) (< (+ .cse1 1) |c_ULTIMATE.start_main_~k~0#1|) (not (>= .cse2 (+ (* .cse3 .cse4) .cse5))) (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| .cse4) (- .cse3))))) (let ((.cse7 (+ 1 .cse4))) (let ((.cse8 (* .cse7 .cse7)) (.cse6 (+ 1 .cse1))) (or (not (< .cse6 |c_ULTIMATE.start_main_~k~0#1|)) .cse0 (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| .cse7) (- .cse8))) (not (>= (+ (* .cse4 3) (+ (* .cse9 12) (+ (* .cse10 27) (+ (div (+ .cse11 (* (- 18) .cse12) (* (- 121) .cse13)) (- 4)) (* |c_ULTIMATE.start_main_~y~0#1| 48) 22) 12) 5) 1) (+ (* .cse8 .cse7) .cse2))) (< (+ .cse6 1) |c_ULTIMATE.start_main_~k~0#1|)))) (let ((.cse15 (* .cse9 .cse9))) (or .cse0 (not (< .cse14 |c_ULTIMATE.start_main_~k~0#1|)) (not (>= .cse5 (+ (* .cse15 .cse9) .cse16))) (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| .cse9) (- .cse15))) (< (+ .cse14 1) |c_ULTIMATE.start_main_~k~0#1|))) (let ((.cse17 (* .cse10 .cse10))) (or (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| .cse10) (- .cse17))) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |c_ULTIMATE.start_main_~k~0#1|) .cse0 (not .cse18) (not (>= .cse16 (+ (* .cse17 .cse10) |c_ULTIMATE.start_main_~x~0#1|))))) (or .cse18 (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~y~0#1|) (- .cse13)))))))) is different from false [2023-02-18 19:17:44,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 19:18:16,035 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse12 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))) (let ((.cse8 (- (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (.cse9 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse2 (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~k~0#1|)) (.cse15 (* .cse12 .cse12)) (.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (let ((.cse1 (- .cse0)) (.cse3 (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| .cse12) (- .cse15)))) (.cse4 (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |c_ULTIMATE.start_main_~k~0#1|)) (.cse5 (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0))) (.cse10 (not .cse2)) (.cse6 (+ (* |c_ULTIMATE.start_main_~y~0#1| 3) (div (+ .cse8 (* (- 6) .cse9) (* (- 13) .cse0)) (- 4)) 1)) (.cse7 (* .cse15 .cse12))) (and (or (not (= 0 (+ (+ (+ (* 4 |c_ULTIMATE.start_main_~x~0#1|) (- (* (* .cse0 |c_ULTIMATE.start_main_~y~0#1|) |c_ULTIMATE.start_main_~y~0#1|))) (- (* (* (* 2 |c_ULTIMATE.start_main_~y~0#1|) |c_ULTIMATE.start_main_~y~0#1|) |c_ULTIMATE.start_main_~y~0#1|))) .cse1))) .cse2 (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~y~0#1|) .cse1))) (or .cse3 .cse4 .cse5 (not (>= .cse6 (+ .cse7 (div (+ .cse8 (* (- 2) .cse9) .cse1) (- 4))))) .cse10) (let ((.cse14 (+ 1 .cse12))) (let ((.cse13 (* .cse14 .cse14)) (.cse11 (+ 1 |c_ULTIMATE.start_main_~c~0#1|))) (or .cse5 (not (< .cse11 |c_ULTIMATE.start_main_~k~0#1|)) (not (>= (+ (* .cse12 3) (+ (* |c_ULTIMATE.start_main_~y~0#1| 12) (div (+ .cse8 (* (- 10) .cse9) (* (- 37) .cse0)) (- 4)) 5) 1) (+ (* .cse13 .cse14) .cse6))) (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| .cse14) (- .cse13))) (< (+ .cse11 1) |c_ULTIMATE.start_main_~k~0#1|)))) (or .cse3 .cse4 .cse5 .cse10 (not (>= .cse6 (+ .cse7 |c_ULTIMATE.start_main_~x~0#1|)))))))) is different from false [2023-02-18 19:18:18,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 19:18:20,091 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (let ((.cse1 (- .cse0)) (.cse2 (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~k~0#1|))) (and (or (not (= 0 (+ (+ (+ (* 4 |c_ULTIMATE.start_main_~x~0#1|) (- (* (* .cse0 |c_ULTIMATE.start_main_~y~0#1|) |c_ULTIMATE.start_main_~y~0#1|))) (- (* (* (* 2 |c_ULTIMATE.start_main_~y~0#1|) |c_ULTIMATE.start_main_~y~0#1|) |c_ULTIMATE.start_main_~y~0#1|))) .cse1))) .cse2 (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~y~0#1|) .cse1))) (let ((.cse3 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))) (let ((.cse4 (* .cse3 .cse3))) (or (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| .cse3) (- .cse4))) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |c_ULTIMATE.start_main_~k~0#1|) (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (not (let ((.cse5 (- (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (.cse6 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (>= (+ (* |c_ULTIMATE.start_main_~y~0#1| 3) (div (+ .cse5 (* (- 6) .cse6) (* (- 13) .cse0)) (- 4)) 1) (+ (* .cse4 .cse3) (div (+ .cse5 (* (- 2) .cse6) .cse1) (- 4)))))) (not .cse2))))))) is different from false [2023-02-18 19:18:21,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:18:21,660 INFO L93 Difference]: Finished difference Result 67 states and 85 transitions. [2023-02-18 19:18:21,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-02-18 19:18:21,660 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 57 [2023-02-18 19:18:21,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:18:21,661 INFO L225 Difference]: With dead ends: 67 [2023-02-18 19:18:21,661 INFO L226 Difference]: Without dead ends: 59 [2023-02-18 19:18:21,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 82 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 134.0s TimeCoverageRelationStatistics Valid=503, Invalid=2150, Unknown=23, NotChecked=630, Total=3306 [2023-02-18 19:18:21,662 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 57 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 55 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-02-18 19:18:21,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 196 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 511 Invalid, 3 Unknown, 76 Unchecked, 6.5s Time] [2023-02-18 19:18:21,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-18 19:18:21,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-02-18 19:18:21,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-18 19:18:21,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2023-02-18 19:18:21,697 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 57 [2023-02-18 19:18:21,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:18:21,697 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2023-02-18 19:18:21,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 25 states have internal predecessors, (48), 16 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-18 19:18:21,698 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2023-02-18 19:18:21,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-02-18 19:18:21,700 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:18:21,700 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:18:21,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-18 19:18:21,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:18:21,906 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:18:21,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:18:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1794064584, now seen corresponding path program 7 times [2023-02-18 19:18:21,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:18:21,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388650153] [2023-02-18 19:18:21,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:18:21,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:18:21,919 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:18:21,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1842773670] [2023-02-18 19:18:21,920 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 19:18:21,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:18:21,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:18:21,921 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) [2023-02-18 19:18:21,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-18 19:18:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:18:22,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 68 conjunts are in the unsatisfiable core [2023-02-18 19:18:22,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:18:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 66 proven. 274 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-02-18 19:18:22,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:18:24,307 WARN L837 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~k~0#1|) (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~y~0#1|) (- (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))))) is different from false [2023-02-18 19:18:28,327 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_41| Int)) (or (= 0 (+ (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_41| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69|) (- (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69|)))) (= (mod (+ (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69|) (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69|)) 4) 0)))) is different from true [2023-02-18 19:18:34,366 WARN L859 $PredicateComparison]: unable to prove that (or (= 0 c___VERIFIER_assert_~cond) (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_41| Int)) (or (= 0 (+ (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_41| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69|) (- (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69|)))) (= (mod (+ (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69|) (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_69|)) 4) 0)))) is different from true [2023-02-18 19:18:38,378 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= 0 (let ((.cse0 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))) (+ (* |ULTIMATE.start_main_~k~0#1| .cse0) (- (* .cse0 .cse0))))) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)))) (not (= (mod (+ (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0))) is different from false [2023-02-18 19:18:38,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:18:38,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388650153] [2023-02-18 19:18:38,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:18:38,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842773670] [2023-02-18 19:18:38,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842773670] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:18:38,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 19:18:38,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2023-02-18 19:18:38,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557622766] [2023-02-18 19:18:38,383 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 19:18:38,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-18 19:18:38,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:18:38,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-18 19:18:38,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=503, Unknown=4, NotChecked=188, Total=756 [2023-02-18 19:18:38,384 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-18 19:18:38,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:18:38,893 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2023-02-18 19:18:38,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-18 19:18:38,893 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 106 [2023-02-18 19:18:38,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:18:38,894 INFO L225 Difference]: With dead ends: 67 [2023-02-18 19:18:38,894 INFO L226 Difference]: Without dead ends: 62 [2023-02-18 19:18:38,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=80, Invalid=634, Unknown=4, NotChecked=212, Total=930 [2023-02-18 19:18:38,895 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 19:18:38,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 384 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 19:18:38,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-02-18 19:18:38,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-02-18 19:18:38,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 16 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-18 19:18:38,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2023-02-18 19:18:38,924 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 106 [2023-02-18 19:18:38,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:18:38,924 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2023-02-18 19:18:38,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-18 19:18:38,924 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2023-02-18 19:18:38,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-02-18 19:18:38,925 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:18:38,926 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:18:38,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-18 19:18:39,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-18 19:18:39,134 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:18:39,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:18:39,135 INFO L85 PathProgramCache]: Analyzing trace with hash -444443359, now seen corresponding path program 8 times [2023-02-18 19:18:39,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:18:39,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588875494] [2023-02-18 19:18:39,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:18:39,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:18:39,145 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:18:39,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1722618707] [2023-02-18 19:18:39,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 19:18:39,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:18:39,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:18:39,147 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) [2023-02-18 19:18:39,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-18 19:18:39,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 19:18:39,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:18:39,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 72 conjunts are in the unsatisfiable core [2023-02-18 19:18:39,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:18:41,200 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 44 proven. 343 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-02-18 19:18:41,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:18:41,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:18:41,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588875494] [2023-02-18 19:18:41,295 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:18:41,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722618707] [2023-02-18 19:18:41,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722618707] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:18:41,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 19:18:41,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2023-02-18 19:18:41,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403919672] [2023-02-18 19:18:41,296 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 19:18:41,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-18 19:18:41,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:18:41,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-18 19:18:41,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2023-02-18 19:18:41,297 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-18 19:18:41,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:18:41,759 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2023-02-18 19:18:41,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-18 19:18:41,760 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 113 [2023-02-18 19:18:41,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:18:41,762 INFO L225 Difference]: With dead ends: 70 [2023-02-18 19:18:41,762 INFO L226 Difference]: Without dead ends: 65 [2023-02-18 19:18:41,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2023-02-18 19:18:41,763 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 19:18:41,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 404 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 19:18:41,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-02-18 19:18:41,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-02-18 19:18:41,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 45 states have internal predecessors, (46), 17 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-02-18 19:18:41,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2023-02-18 19:18:41,812 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 113 [2023-02-18 19:18:41,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:18:41,814 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2023-02-18 19:18:41,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-18 19:18:41,814 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2023-02-18 19:18:41,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-02-18 19:18:41,819 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:18:41,819 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:18:41,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-18 19:18:42,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-18 19:18:42,027 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:18:42,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:18:42,028 INFO L85 PathProgramCache]: Analyzing trace with hash -16713960, now seen corresponding path program 9 times [2023-02-18 19:18:42,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:18:42,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992481867] [2023-02-18 19:18:42,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:18:42,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:18:42,042 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:18:42,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927686224] [2023-02-18 19:18:42,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 19:18:42,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:18:42,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:18:42,044 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) [2023-02-18 19:18:42,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-18 19:18:42,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2023-02-18 19:18:42,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:18:42,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 76 conjunts are in the unsatisfiable core [2023-02-18 19:18:42,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:18:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 61 proven. 376 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-02-18 19:18:42,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:18:42,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:18:42,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992481867] [2023-02-18 19:18:42,575 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:18:42,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927686224] [2023-02-18 19:18:42,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927686224] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:18:42,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 19:18:42,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2023-02-18 19:18:42,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929006248] [2023-02-18 19:18:42,576 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 19:18:42,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-18 19:18:42,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:18:42,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-18 19:18:42,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2023-02-18 19:18:42,578 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-02-18 19:18:43,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:18:43,181 INFO L93 Difference]: Finished difference Result 73 states and 88 transitions. [2023-02-18 19:18:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-18 19:18:43,182 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 120 [2023-02-18 19:18:43,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:18:43,182 INFO L225 Difference]: With dead ends: 73 [2023-02-18 19:18:43,182 INFO L226 Difference]: Without dead ends: 68 [2023-02-18 19:18:43,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=777, Unknown=0, NotChecked=0, Total=870 [2023-02-18 19:18:43,183 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 19:18:43,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 445 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 19:18:43,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-02-18 19:18:43,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-02-18 19:18:43,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 18 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-02-18 19:18:43,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2023-02-18 19:18:43,211 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 83 transitions. Word has length 120 [2023-02-18 19:18:43,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:18:43,211 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 83 transitions. [2023-02-18 19:18:43,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 22 states have internal predecessors, (45), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-02-18 19:18:43,212 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 83 transitions. [2023-02-18 19:18:43,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-02-18 19:18:43,215 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:18:43,215 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:18:43,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-18 19:18:43,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-18 19:18:43,421 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:18:43,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:18:43,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1287814847, now seen corresponding path program 10 times [2023-02-18 19:18:43,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:18:43,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127084913] [2023-02-18 19:18:43,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:18:43,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:18:43,428 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:18:43,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090539904] [2023-02-18 19:18:43,428 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 19:18:43,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:18:43,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:18:43,430 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) [2023-02-18 19:18:43,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-18 19:18:43,682 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 19:18:43,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:18:43,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 80 conjunts are in the unsatisfiable core [2023-02-18 19:18:43,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:18:45,867 WARN L859 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main_~c~0#1| (+ 1 15)) (= (+ (+ |c_ULTIMATE.start_main_~y~0#1| (- 1)) (- 1)) (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 7)))))))) (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0) (< 15 |c_ULTIMATE.start_main_~k~0#1|)) is different from true [2023-02-18 19:18:45,927 INFO L134 CoverageAnalysis]: Checked inductivity of 986 backedges. 81 proven. 393 refuted. 0 times theorem prover too weak. 496 trivial. 16 not checked. [2023-02-18 19:18:45,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:18:47,985 WARN L837 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~k~0#1|) (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~y~0#1|) (- (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))))) is different from false [2023-02-18 19:18:51,999 WARN L859 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_50| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123| Int)) (or (= 0 (+ (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_50| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123|) (- (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123|)))) (= (mod (+ (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123|)) 4) 0))) (not (= |c___VERIFIER_assert_#in~cond| 0))) is different from true [2023-02-18 19:18:58,011 WARN L859 $PredicateComparison]: unable to prove that (or (= 0 c___VERIFIER_assert_~cond) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_50| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123| Int)) (or (= 0 (+ (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_50| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123|) (- (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123|)))) (= (mod (+ (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_123|)) 4) 0))) (not (= |c___VERIFIER_assert_#in~cond| 0))) is different from true [2023-02-18 19:19:02,021 WARN L837 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= 0 (let ((.cse0 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))) (+ (* |ULTIMATE.start_main_~k~0#1| .cse0) (- (* .cse0 .cse0))))) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|))))) is different from false [2023-02-18 19:19:02,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:19:02,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127084913] [2023-02-18 19:19:02,025 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:19:02,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090539904] [2023-02-18 19:19:02,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090539904] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:19:02,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 19:19:02,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2023-02-18 19:19:02,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352301379] [2023-02-18 19:19:02,025 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 19:19:02,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-18 19:19:02,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:19:02,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-18 19:19:02,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=648, Unknown=5, NotChecked=270, Total=992 [2023-02-18 19:19:02,027 INFO L87 Difference]: Start difference. First operand 68 states and 83 transitions. Second operand has 25 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-02-18 19:19:04,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 19:19:06,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 19:19:08,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 19:19:10,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 19:19:12,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 19:19:14,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 19:19:16,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 19:19:18,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 19:19:20,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 19:19:22,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 19:19:24,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 19:19:27,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 19:19:27,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:19:27,158 INFO L93 Difference]: Finished difference Result 76 states and 92 transitions. [2023-02-18 19:19:27,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-18 19:19:27,159 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 127 [2023-02-18 19:19:27,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:19:27,160 INFO L225 Difference]: With dead ends: 76 [2023-02-18 19:19:27,160 INFO L226 Difference]: Without dead ends: 71 [2023-02-18 19:19:27,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 108 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=88, Invalid=797, Unknown=5, NotChecked=300, Total=1190 [2023-02-18 19:19:27,160 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 0 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2023-02-18 19:19:27,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 510 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1279 Invalid, 12 Unknown, 80 Unchecked, 25.0s Time] [2023-02-18 19:19:27,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-02-18 19:19:27,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-02-18 19:19:27,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 19 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-02-18 19:19:27,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2023-02-18 19:19:27,185 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 127 [2023-02-18 19:19:27,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:19:27,186 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2023-02-18 19:19:27,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-02-18 19:19:27,186 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2023-02-18 19:19:27,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-02-18 19:19:27,187 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:19:27,187 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:19:27,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-18 19:19:27,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-18 19:19:27,393 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:19:27,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:19:27,393 INFO L85 PathProgramCache]: Analyzing trace with hash 146925304, now seen corresponding path program 11 times [2023-02-18 19:19:27,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:19:27,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852879426] [2023-02-18 19:19:27,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:19:27,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:19:27,400 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:19:27,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [600459270] [2023-02-18 19:19:27,401 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 19:19:27,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:19:27,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:19:27,402 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:19:27,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-18 19:19:27,838 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-02-18 19:19:27,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:19:27,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 84 conjunts are in the unsatisfiable core [2023-02-18 19:19:27,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:19:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 83 proven. 463 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-02-18 19:19:28,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:19:30,293 WARN L837 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= 0 (let ((.cse0 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))) (+ (* |ULTIMATE.start_main_~k~0#1| .cse0) (- (* .cse0 .cse0))))) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|))))) is different from false [2023-02-18 19:19:30,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:19:30,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852879426] [2023-02-18 19:19:30,295 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:19:30,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600459270] [2023-02-18 19:19:30,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600459270] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:19:30,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 19:19:30,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2023-02-18 19:19:30,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372382178] [2023-02-18 19:19:30,298 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 19:19:30,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-18 19:19:30,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:19:30,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-18 19:19:30,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=733, Unknown=1, NotChecked=54, Total=870 [2023-02-18 19:19:30,300 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand has 25 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-02-18 19:19:31,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:19:31,038 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2023-02-18 19:19:31,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-18 19:19:31,039 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 134 [2023-02-18 19:19:31,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:19:31,040 INFO L225 Difference]: With dead ends: 79 [2023-02-18 19:19:31,040 INFO L226 Difference]: Without dead ends: 74 [2023-02-18 19:19:31,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=101, Invalid=894, Unknown=1, NotChecked=60, Total=1056 [2023-02-18 19:19:31,040 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-18 19:19:31,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 556 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-18 19:19:31,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-02-18 19:19:31,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-02-18 19:19:31,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 20 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-02-18 19:19:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2023-02-18 19:19:31,067 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 134 [2023-02-18 19:19:31,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:19:31,068 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2023-02-18 19:19:31,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-02-18 19:19:31,068 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2023-02-18 19:19:31,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-02-18 19:19:31,069 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:19:31,069 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:19:31,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-18 19:19:31,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:19:31,276 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:19:31,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:19:31,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1332278625, now seen corresponding path program 12 times [2023-02-18 19:19:31,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:19:31,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828545646] [2023-02-18 19:19:31,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:19:31,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:19:31,289 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:19:31,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429086423] [2023-02-18 19:19:31,290 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 19:19:31,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:19:31,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:19:31,305 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:19:31,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-18 19:19:31,638 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-02-18 19:19:31,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:19:31,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 89 conjunts are in the unsatisfiable core [2023-02-18 19:19:31,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:19:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 82 proven. 523 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-02-18 19:19:31,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:19:34,065 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 1 (+ 1 |c_ULTIMATE.start_main_~c~0#1|)))) (or (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (not (< .cse0 |c_ULTIMATE.start_main_~k~0#1|)) (< (+ .cse0 1) |c_ULTIMATE.start_main_~k~0#1|) (= 0 (let ((.cse1 (+ 1 (+ 1 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))))) (+ (* |c_ULTIMATE.start_main_~k~0#1| .cse1) (- (* .cse1 .cse1))))))) is different from false [2023-02-18 19:19:38,080 WARN L859 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_69| Int)) (or (= (mod (+ (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167|)) 4) 0) (= 0 (let ((.cse0 (+ 1 (+ 1 (+ 1 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167|))))) (+ (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_69| .cse0) (- (* .cse0 .cse0))))))) (not (= |c___VERIFIER_assert_#in~cond| 0))) is different from true [2023-02-18 19:19:44,093 WARN L859 $PredicateComparison]: unable to prove that (or (= 0 c___VERIFIER_assert_~cond) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_69| Int)) (or (= (mod (+ (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167|)) 4) 0) (= 0 (let ((.cse0 (+ 1 (+ 1 (+ 1 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_167|))))) (+ (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_69| .cse0) (- (* .cse0 .cse0))))))) (not (= |c___VERIFIER_assert_#in~cond| 0))) is different from true [2023-02-18 19:19:48,148 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 1 (+ 1 (+ 1 (+ 1 |c_ULTIMATE.start_main_~c~0#1|)))))) (or (= 0 (let ((.cse0 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))))))) (+ (* |c_ULTIMATE.start_main_~k~0#1| .cse0) (- (* .cse0 .cse0))))) (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (not (< .cse1 |c_ULTIMATE.start_main_~k~0#1|)) (< (+ .cse1 1) |c_ULTIMATE.start_main_~k~0#1|))) is different from false [2023-02-18 19:20:39,365 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 |c_ULTIMATE.start_main_~c~0#1|))))))))))) (or (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (< (+ .cse0 1) |c_ULTIMATE.start_main_~k~0#1|) (not (< .cse0 |c_ULTIMATE.start_main_~k~0#1|)) (= 0 (let ((.cse1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 |c_ULTIMATE.start_main_~y~0#1|)))))))))))) (+ (* |c_ULTIMATE.start_main_~k~0#1| .cse1) (- (* .cse1 .cse1))))))) is different from false [2023-02-18 19:20:41,379 WARN L837 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (let ((.cse1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 |c_ULTIMATE.start_main_~c~0#1|)))))))))))) (or (= 0 (let ((.cse0 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))))))))))))) (+ (* |ULTIMATE.start_main_~k~0#1| .cse0) (- (* .cse0 .cse0))))) (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ .cse1 1) |ULTIMATE.start_main_~k~0#1|) (not (< .cse1 |ULTIMATE.start_main_~k~0#1|)))))) is different from false [2023-02-18 19:20:41,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:20:41,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828545646] [2023-02-18 19:20:41,385 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:20:41,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429086423] [2023-02-18 19:20:41,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429086423] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:20:41,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 19:20:41,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2023-02-18 19:20:41,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723363982] [2023-02-18 19:20:41,385 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 19:20:41,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-18 19:20:41,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:20:41,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-18 19:20:41,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1110, Unknown=10, NotChecked=450, Total=1806 [2023-02-18 19:20:41,387 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand has 26 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-02-18 19:20:42,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:20:42,179 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions. [2023-02-18 19:20:42,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-18 19:20:42,179 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 141 [2023-02-18 19:20:42,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:20:42,180 INFO L225 Difference]: With dead ends: 82 [2023-02-18 19:20:42,180 INFO L226 Difference]: Without dead ends: 77 [2023-02-18 19:20:42,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 180 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 61.7s TimeCoverageRelationStatistics Valid=255, Invalid=1319, Unknown=10, NotChecked=486, Total=2070 [2023-02-18 19:20:42,181 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 7 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-18 19:20:42,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 580 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-18 19:20:42,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-18 19:20:42,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-02-18 19:20:42,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 53 states have internal predecessors, (54), 21 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-18 19:20:42,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2023-02-18 19:20:42,233 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 141 [2023-02-18 19:20:42,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:20:42,234 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2023-02-18 19:20:42,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-02-18 19:20:42,234 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2023-02-18 19:20:42,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-02-18 19:20:42,236 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:20:42,237 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:20:42,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-18 19:20:42,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-18 19:20:42,437 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:20:42,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:20:42,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2058456792, now seen corresponding path program 13 times [2023-02-18 19:20:42,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:20:42,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275261478] [2023-02-18 19:20:42,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:20:42,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:20:42,444 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:20:42,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [519907481] [2023-02-18 19:20:42,444 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 19:20:42,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:20:42,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:20:42,446 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:20:42,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-18 19:20:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:20:42,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 92 conjunts are in the unsatisfiable core [2023-02-18 19:20:42,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:20:42,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 96 proven. 571 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-02-18 19:20:42,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:20:44,967 WARN L837 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~k~0#1|) (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~y~0#1|) (- (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))))) is different from false [2023-02-18 19:20:48,983 WARN L859 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_79| Int)) (or (= 0 (+ (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_79| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196|) (- (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196|)))) (= (mod (+ (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196|)) 4) 0))) (not (= |c___VERIFIER_assert_#in~cond| 0))) is different from true [2023-02-18 19:20:54,996 WARN L859 $PredicateComparison]: unable to prove that (or (= 0 c___VERIFIER_assert_~cond) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_79| Int)) (or (= 0 (+ (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_79| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196|) (- (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196|)))) (= (mod (+ (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_196|)) 4) 0))) (not (= |c___VERIFIER_assert_#in~cond| 0))) is different from true [2023-02-18 19:20:59,022 WARN L837 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= 0 (let ((.cse0 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))) (+ (* |ULTIMATE.start_main_~k~0#1| .cse0) (- (* .cse0 .cse0))))) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|))))) is different from false [2023-02-18 19:20:59,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:20:59,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275261478] [2023-02-18 19:20:59,026 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:20:59,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519907481] [2023-02-18 19:20:59,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519907481] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:20:59,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 19:20:59,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2023-02-18 19:20:59,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755630392] [2023-02-18 19:20:59,027 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 19:20:59,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-18 19:20:59,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:20:59,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-18 19:20:59,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=809, Unknown=4, NotChecked=236, Total=1122 [2023-02-18 19:20:59,028 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand has 27 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 26 states have internal predecessors, (53), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-18 19:20:59,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:20:59,833 INFO L93 Difference]: Finished difference Result 85 states and 104 transitions. [2023-02-18 19:20:59,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-18 19:20:59,834 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 26 states have internal predecessors, (53), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 148 [2023-02-18 19:20:59,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:20:59,834 INFO L225 Difference]: With dead ends: 85 [2023-02-18 19:20:59,834 INFO L226 Difference]: Without dead ends: 80 [2023-02-18 19:20:59,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=92, Invalid=976, Unknown=4, NotChecked=260, Total=1332 [2023-02-18 19:20:59,835 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 7 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-18 19:20:59,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 629 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1628 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-18 19:20:59,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-18 19:20:59,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-02-18 19:20:59,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 states have internal predecessors, (56), 22 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-02-18 19:20:59,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 99 transitions. [2023-02-18 19:20:59,861 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 99 transitions. Word has length 148 [2023-02-18 19:20:59,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:20:59,861 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 99 transitions. [2023-02-18 19:20:59,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 26 states have internal predecessors, (53), 21 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-18 19:20:59,862 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 99 transitions. [2023-02-18 19:20:59,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-02-18 19:20:59,862 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:20:59,862 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:20:59,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-18 19:21:00,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-18 19:21:00,069 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:21:00,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:21:00,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1810280833, now seen corresponding path program 14 times [2023-02-18 19:21:00,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:21:00,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532866072] [2023-02-18 19:21:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:21:00,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:21:00,076 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:21:00,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237407774] [2023-02-18 19:21:00,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 19:21:00,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:21:00,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:21:00,085 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:21:00,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-18 19:21:01,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 19:21:01,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:21:01,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 96 conjunts are in the unsatisfiable core [2023-02-18 19:21:01,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:21:01,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 65 proven. 667 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2023-02-18 19:21:01,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:21:02,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:21:02,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532866072] [2023-02-18 19:21:02,030 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:21:02,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237407774] [2023-02-18 19:21:02,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237407774] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:21:02,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 19:21:02,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2023-02-18 19:21:02,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386704666] [2023-02-18 19:21:02,031 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 19:21:02,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-18 19:21:02,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:21:02,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-18 19:21:02,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2023-02-18 19:21:02,032 INFO L87 Difference]: Start difference. First operand 80 states and 99 transitions. Second operand has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-02-18 19:21:02,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:21:02,892 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2023-02-18 19:21:02,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-18 19:21:02,893 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 155 [2023-02-18 19:21:02,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:21:02,894 INFO L225 Difference]: With dead ends: 88 [2023-02-18 19:21:02,894 INFO L226 Difference]: Without dead ends: 83 [2023-02-18 19:21:02,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=108, Invalid=1082, Unknown=0, NotChecked=0, Total=1190 [2023-02-18 19:21:02,895 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 6 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 1839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-18 19:21:02,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 706 Invalid, 1839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1839 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-18 19:21:02,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-02-18 19:21:02,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-02-18 19:21:02,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 57 states have internal predecessors, (58), 23 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-02-18 19:21:02,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2023-02-18 19:21:02,921 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 103 transitions. Word has length 155 [2023-02-18 19:21:02,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:21:02,921 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 103 transitions. [2023-02-18 19:21:02,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-02-18 19:21:02,921 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 103 transitions. [2023-02-18 19:21:02,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-02-18 19:21:02,922 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:21:02,922 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:21:02,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-18 19:21:03,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-18 19:21:03,129 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:21:03,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:21:03,129 INFO L85 PathProgramCache]: Analyzing trace with hash 548269752, now seen corresponding path program 15 times [2023-02-18 19:21:03,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:21:03,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094020306] [2023-02-18 19:21:03,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:21:03,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:21:03,136 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:21:03,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088674139] [2023-02-18 19:21:03,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 19:21:03,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:21:03,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:21:03,138 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:21:03,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-18 19:21:03,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2023-02-18 19:21:03,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:21:03,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 100 conjunts are in the unsatisfiable core [2023-02-18 19:21:03,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:21:04,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 91 proven. 709 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-02-18 19:21:04,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:21:04,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:21:04,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094020306] [2023-02-18 19:21:04,308 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:21:04,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088674139] [2023-02-18 19:21:04,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088674139] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:21:04,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 19:21:04,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2023-02-18 19:21:04,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358043759] [2023-02-18 19:21:04,308 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 19:21:04,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-02-18 19:21:04,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:21:04,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-02-18 19:21:04,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 19:21:04,309 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. Second operand has 29 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 28 states have internal predecessors, (57), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-02-18 19:21:05,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:21:05,405 INFO L93 Difference]: Finished difference Result 91 states and 112 transitions. [2023-02-18 19:21:05,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-18 19:21:05,406 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 28 states have internal predecessors, (57), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 162 [2023-02-18 19:21:05,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:21:05,407 INFO L225 Difference]: With dead ends: 91 [2023-02-18 19:21:05,407 INFO L226 Difference]: Without dead ends: 86 [2023-02-18 19:21:05,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=1149, Unknown=0, NotChecked=0, Total=1260 [2023-02-18 19:21:05,408 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 6 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1991 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-18 19:21:05,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 760 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1991 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-18 19:21:05,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-02-18 19:21:05,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-02-18 19:21:05,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 59 states have internal predecessors, (60), 24 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-02-18 19:21:05,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 107 transitions. [2023-02-18 19:21:05,452 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 107 transitions. Word has length 162 [2023-02-18 19:21:05,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:21:05,452 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 107 transitions. [2023-02-18 19:21:05,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 28 states have internal predecessors, (57), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-02-18 19:21:05,453 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 107 transitions. [2023-02-18 19:21:05,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-02-18 19:21:05,453 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:21:05,454 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:21:05,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-02-18 19:21:05,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-18 19:21:05,661 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:21:05,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:21:05,661 INFO L85 PathProgramCache]: Analyzing trace with hash -954681951, now seen corresponding path program 16 times [2023-02-18 19:21:05,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:21:05,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349791273] [2023-02-18 19:21:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:21:05,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:21:05,668 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:21:05,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993607720] [2023-02-18 19:21:05,668 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 19:21:05,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:21:05,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:21:05,669 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:21:05,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-18 19:21:05,953 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 19:21:05,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:21:05,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 104 conjunts are in the unsatisfiable core [2023-02-18 19:21:05,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:21:06,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1817 backedges. 111 proven. 760 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-02-18 19:21:06,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:21:08,361 WARN L837 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~k~0#1|) (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~y~0#1|) (- (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))))) is different from false [2023-02-18 19:21:12,374 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_88| Int)) (or (= (mod (+ (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268|) (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268|)) 4) 0) (= 0 (+ (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_88| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268|) (- (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268|))))))) is different from true [2023-02-18 19:21:18,387 WARN L859 $PredicateComparison]: unable to prove that (or (= 0 c___VERIFIER_assert_~cond) (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_88| Int)) (or (= (mod (+ (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268|) (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268|)) 4) 0) (= 0 (+ (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_88| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268|) (- (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_268|))))))) is different from true [2023-02-18 19:21:22,404 WARN L837 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= 0 (let ((.cse0 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))) (+ (* |ULTIMATE.start_main_~k~0#1| .cse0) (- (* .cse0 .cse0))))) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|))))) is different from false [2023-02-18 19:21:22,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:21:22,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349791273] [2023-02-18 19:21:22,412 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:21:22,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993607720] [2023-02-18 19:21:22,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993607720] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:21:22,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 19:21:22,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2023-02-18 19:21:22,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320591120] [2023-02-18 19:21:22,412 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 19:21:22,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-18 19:21:22,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:21:22,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-18 19:21:22,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=989, Unknown=4, NotChecked=260, Total=1332 [2023-02-18 19:21:22,413 INFO L87 Difference]: Start difference. First operand 86 states and 107 transitions. Second operand has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 states have internal predecessors, (59), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-02-18 19:21:23,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:21:23,339 INFO L93 Difference]: Finished difference Result 94 states and 116 transitions. [2023-02-18 19:21:23,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-02-18 19:21:23,339 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 states have internal predecessors, (59), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 169 [2023-02-18 19:21:23,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:21:23,340 INFO L225 Difference]: With dead ends: 94 [2023-02-18 19:21:23,340 INFO L226 Difference]: Without dead ends: 89 [2023-02-18 19:21:23,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=98, Invalid=1174, Unknown=4, NotChecked=284, Total=1560 [2023-02-18 19:21:23,341 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 6 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 2149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 2149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-18 19:21:23,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 816 Invalid, 2149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2149 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-18 19:21:23,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-02-18 19:21:23,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-02-18 19:21:23,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 61 states have (on average 1.0163934426229508) internal successors, (62), 61 states have internal predecessors, (62), 25 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-02-18 19:21:23,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 111 transitions. [2023-02-18 19:21:23,368 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 111 transitions. Word has length 169 [2023-02-18 19:21:23,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:21:23,368 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 111 transitions. [2023-02-18 19:21:23,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.0344827586206895) internal successors, (59), 29 states have internal predecessors, (59), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-02-18 19:21:23,368 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 111 transitions. [2023-02-18 19:21:23,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-02-18 19:21:23,369 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:21:23,369 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:21:23,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-18 19:21:23,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:21:23,576 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:21:23,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:21:23,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1441462632, now seen corresponding path program 17 times [2023-02-18 19:21:23,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:21:23,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557934595] [2023-02-18 19:21:23,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:21:23,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:21:23,583 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:21:23,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1599469127] [2023-02-18 19:21:23,584 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 19:21:23,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:21:23,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:21:23,586 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:21:23,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-18 19:21:24,441 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-02-18 19:21:24,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:21:24,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 108 conjunts are in the unsatisfiable core [2023-02-18 19:21:24,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:21:24,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 77 proven. 868 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2023-02-18 19:21:24,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:21:24,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:21:24,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557934595] [2023-02-18 19:21:24,979 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:21:24,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599469127] [2023-02-18 19:21:24,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599469127] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:21:24,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 19:21:24,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2023-02-18 19:21:24,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758932960] [2023-02-18 19:21:24,979 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 19:21:24,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-02-18 19:21:24,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:21:24,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-02-18 19:21:24,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1092, Unknown=0, NotChecked=0, Total=1190 [2023-02-18 19:21:24,980 INFO L87 Difference]: Start difference. First operand 89 states and 111 transitions. Second operand has 31 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-02-18 19:21:26,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:21:26,019 INFO L93 Difference]: Finished difference Result 97 states and 120 transitions. [2023-02-18 19:21:26,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-02-18 19:21:26,020 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 176 [2023-02-18 19:21:26,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:21:26,020 INFO L225 Difference]: With dead ends: 97 [2023-02-18 19:21:26,020 INFO L226 Difference]: Without dead ends: 92 [2023-02-18 19:21:26,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=1289, Unknown=0, NotChecked=0, Total=1406 [2023-02-18 19:21:26,021 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 2313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-18 19:21:26,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 874 Invalid, 2313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-18 19:21:26,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-02-18 19:21:26,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2023-02-18 19:21:26,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 26 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-02-18 19:21:26,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 115 transitions. [2023-02-18 19:21:26,048 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 115 transitions. Word has length 176 [2023-02-18 19:21:26,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:21:26,049 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 115 transitions. [2023-02-18 19:21:26,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.033333333333333) internal successors, (61), 30 states have internal predecessors, (61), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-02-18 19:21:26,049 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 115 transitions. [2023-02-18 19:21:26,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-02-18 19:21:26,050 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:21:26,050 INFO L195 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:21:26,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-02-18 19:21:26,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:21:26,260 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:21:26,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:21:26,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1273037249, now seen corresponding path program 18 times [2023-02-18 19:21:26,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:21:26,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614652402] [2023-02-18 19:21:26,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:21:26,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:21:26,271 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:21:26,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2104445327] [2023-02-18 19:21:26,271 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 19:21:26,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:21:26,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:21:26,273 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:21:26,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-18 19:21:27,535 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2023-02-18 19:21:27,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:21:27,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 112 conjunts are in the unsatisfiable core [2023-02-18 19:21:27,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:21:27,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2150 backedges. 70 proven. 952 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-02-18 19:21:27,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:21:28,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:21:28,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614652402] [2023-02-18 19:21:28,029 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:21:28,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104445327] [2023-02-18 19:21:28,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104445327] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 19:21:28,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 19:21:28,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2023-02-18 19:21:28,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806322141] [2023-02-18 19:21:28,029 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 19:21:28,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-18 19:21:28,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:21:28,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-18 19:21:28,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1159, Unknown=0, NotChecked=0, Total=1260 [2023-02-18 19:21:28,031 INFO L87 Difference]: Start difference. First operand 92 states and 115 transitions. Second operand has 32 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-02-18 19:21:29,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:21:29,223 INFO L93 Difference]: Finished difference Result 100 states and 124 transitions. [2023-02-18 19:21:29,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-18 19:21:29,224 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 183 [2023-02-18 19:21:29,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:21:29,224 INFO L225 Difference]: With dead ends: 100 [2023-02-18 19:21:29,224 INFO L226 Difference]: Without dead ends: 95 [2023-02-18 19:21:29,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=1362, Unknown=0, NotChecked=0, Total=1482 [2023-02-18 19:21:29,225 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 6 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 2483 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-18 19:21:29,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 934 Invalid, 2483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2483 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-18 19:21:29,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-02-18 19:21:29,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-02-18 19:21:29,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 65 states have internal predecessors, (66), 27 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-02-18 19:21:29,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 119 transitions. [2023-02-18 19:21:29,253 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 119 transitions. Word has length 183 [2023-02-18 19:21:29,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:21:29,253 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 119 transitions. [2023-02-18 19:21:29,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-02-18 19:21:29,254 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 119 transitions. [2023-02-18 19:21:29,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-02-18 19:21:29,256 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:21:29,256 INFO L195 NwaCegarLoop]: trace histogram [27, 26, 26, 26, 26, 26, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:21:29,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-02-18 19:21:29,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:21:29,458 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:21:29,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:21:29,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1983588744, now seen corresponding path program 19 times [2023-02-18 19:21:29,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:21:29,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587833635] [2023-02-18 19:21:29,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:21:29,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:21:29,465 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:21:29,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329982044] [2023-02-18 19:21:29,466 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 19:21:29,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:21:29,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:21:29,467 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:21:29,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-02-18 19:21:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:21:29,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 117 conjunts are in the unsatisfiable core [2023-02-18 19:21:29,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:21:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2327 backedges. 126 proven. 976 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-02-18 19:21:30,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:21:32,462 WARN L837 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~k~0#1|) (= 0 (+ (* |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~y~0#1|) (- (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))))) is different from false [2023-02-18 19:21:36,475 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_121| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349| Int)) (or (= 0 (+ (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_121| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349|) (- (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349|)))) (= (mod (+ (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349|) (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349|)) 4) 0)))) is different from true [2023-02-18 19:21:42,488 WARN L859 $PredicateComparison]: unable to prove that (or (= 0 c___VERIFIER_assert_~cond) (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_121| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349| Int)) (or (= 0 (+ (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_121| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349|) (- (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349|)))) (= (mod (+ (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349|) (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_349|)) 4) 0)))) is different from true [2023-02-18 19:21:46,610 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 1 (+ 1 |c_ULTIMATE.start_main_~c~0#1|)))) (or (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (not (< .cse0 |c_ULTIMATE.start_main_~k~0#1|)) (< (+ .cse0 1) |c_ULTIMATE.start_main_~k~0#1|) (= 0 (let ((.cse1 (+ 1 (+ 1 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))))) (+ (* |c_ULTIMATE.start_main_~k~0#1| .cse1) (- (* .cse1 .cse1))))))) is different from false [2023-02-18 19:21:48,680 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 1 (+ 1 (+ 1 (+ 1 |c_ULTIMATE.start_main_~c~0#1|)))))) (or (= 0 (let ((.cse0 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))))))) (+ (* |c_ULTIMATE.start_main_~k~0#1| .cse0) (- (* .cse0 .cse0))))) (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (not (< .cse1 |c_ULTIMATE.start_main_~k~0#1|)) (< (+ .cse1 1) |c_ULTIMATE.start_main_~k~0#1|))) is different from false [2023-02-18 19:21:50,743 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 |c_ULTIMATE.start_main_~c~0#1|)))))))) (or (= 0 (let ((.cse0 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 (+ 1 |c_ULTIMATE.start_main_~y~0#1|))))))))) (+ (* |c_ULTIMATE.start_main_~k~0#1| .cse0) (- (* .cse0 .cse0))))) (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 4) 0)) (< (+ .cse1 1) |c_ULTIMATE.start_main_~k~0#1|) (not (< .cse1 |c_ULTIMATE.start_main_~k~0#1|)))) is different from false