./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-programs/partial_mod_count_limited_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-programs/partial_mod_count_limited_3.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 e98c2efe8dc7dfa25efbae5d9b3e7693444730d8a672856a92fef54f1a5fbcae --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-13 22:18:54,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-13 22:18:54,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-13 22:18:54,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-13 22:18:54,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-13 22:18:54,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-13 22:18:54,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-13 22:18:54,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-13 22:18:54,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-13 22:18:54,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-13 22:18:54,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-13 22:18:54,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-13 22:18:54,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-13 22:18:54,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-13 22:18:54,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-13 22:18:54,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-13 22:18:54,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-13 22:18:54,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-13 22:18:54,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-13 22:18:54,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-13 22:18:54,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-13 22:18:54,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-13 22:18:54,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-13 22:18:54,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-13 22:18:54,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-13 22:18:54,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-13 22:18:54,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-13 22:18:54,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-13 22:18:54,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-13 22:18:54,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-13 22:18:54,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-13 22:18:54,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-13 22:18:54,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-13 22:18:54,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-13 22:18:54,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-13 22:18:54,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-13 22:18:54,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-13 22:18:54,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-13 22:18:54,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-13 22:18:54,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-13 22:18:54,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-13 22:18:54,648 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-13 22:18:54,676 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-13 22:18:54,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-13 22:18:54,677 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-13 22:18:54,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-13 22:18:54,678 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-13 22:18:54,678 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-13 22:18:54,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-13 22:18:54,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-13 22:18:54,679 INFO L138 SettingsManager]: * Use SBE=true [2023-02-13 22:18:54,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-13 22:18:54,679 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-13 22:18:54,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-13 22:18:54,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-13 22:18:54,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-13 22:18:54,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-13 22:18:54,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-13 22:18:54,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-13 22:18:54,681 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-13 22:18:54,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-13 22:18:54,681 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-13 22:18:54,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-13 22:18:54,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-13 22:18:54,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-13 22:18:54,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-13 22:18:54,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-13 22:18:54,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-13 22:18:54,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-13 22:18:54,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-13 22:18:54,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-13 22:18:54,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-13 22:18:54,683 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-13 22:18:54,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-13 22:18:54,683 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-13 22:18:54,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-13 22:18:54,683 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-13 22:18:54,684 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e98c2efe8dc7dfa25efbae5d9b3e7693444730d8a672856a92fef54f1a5fbcae [2023-02-13 22:18:54,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-13 22:18:54,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-13 22:18:54,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-13 22:18:54,929 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-13 22:18:54,930 INFO L275 PluginConnector]: CDTParser initialized [2023-02-13 22:18:54,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_limited_3.c [2023-02-13 22:18:56,012 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-13 22:18:56,150 INFO L351 CDTParser]: Found 1 translation units. [2023-02-13 22:18:56,150 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_3.c [2023-02-13 22:18:56,154 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac4a460ce/cec99c9353e04e938bb7f8cd0fd55a12/FLAGacd8bdbec [2023-02-13 22:18:56,176 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac4a460ce/cec99c9353e04e938bb7f8cd0fd55a12 [2023-02-13 22:18:56,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-13 22:18:56,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-13 22:18:56,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-13 22:18:56,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-13 22:18:56,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-13 22:18:56,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.02 10:18:56" (1/1) ... [2023-02-13 22:18:56,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6474993c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:18:56, skipping insertion in model container [2023-02-13 22:18:56,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.02 10:18:56" (1/1) ... [2023-02-13 22:18:56,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-13 22:18:56,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-13 22:18:56,293 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/array-programs/partial_mod_count_limited_3.c[331,344] [2023-02-13 22:18:56,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 22:18:56,312 INFO L203 MainTranslator]: Completed pre-run [2023-02-13 22:18:56,319 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/array-programs/partial_mod_count_limited_3.c[331,344] [2023-02-13 22:18:56,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 22:18:56,334 INFO L208 MainTranslator]: Completed translation [2023-02-13 22:18:56,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:18:56 WrapperNode [2023-02-13 22:18:56,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-13 22:18:56,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-13 22:18:56,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-13 22:18:56,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-13 22:18:56,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:18:56" (1/1) ... [2023-02-13 22:18:56,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:18:56" (1/1) ... [2023-02-13 22:18:56,359 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2023-02-13 22:18:56,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-13 22:18:56,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-13 22:18:56,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-13 22:18:56,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-13 22:18:56,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:18:56" (1/1) ... [2023-02-13 22:18:56,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:18:56" (1/1) ... [2023-02-13 22:18:56,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:18:56" (1/1) ... [2023-02-13 22:18:56,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:18:56" (1/1) ... [2023-02-13 22:18:56,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:18:56" (1/1) ... [2023-02-13 22:18:56,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:18:56" (1/1) ... [2023-02-13 22:18:56,375 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:18:56" (1/1) ... [2023-02-13 22:18:56,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:18:56" (1/1) ... [2023-02-13 22:18:56,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-13 22:18:56,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-13 22:18:56,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-13 22:18:56,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-13 22:18:56,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:18:56" (1/1) ... [2023-02-13 22:18:56,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-13 22:18:56,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:18:56,425 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) [2023-02-13 22:18:56,428 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 [2023-02-13 22:18:56,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-13 22:18:56,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-13 22:18:56,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-13 22:18:56,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-13 22:18:56,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-13 22:18:56,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-13 22:18:56,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-13 22:18:56,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-13 22:18:56,531 INFO L235 CfgBuilder]: Building ICFG [2023-02-13 22:18:56,535 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-13 22:18:56,735 INFO L276 CfgBuilder]: Performing block encoding [2023-02-13 22:18:56,740 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-13 22:18:56,740 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-13 22:18:56,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 10:18:56 BoogieIcfgContainer [2023-02-13 22:18:56,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-13 22:18:56,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-13 22:18:56,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-13 22:18:56,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-13 22:18:56,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.02 10:18:56" (1/3) ... [2023-02-13 22:18:56,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd4898b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.02 10:18:56, skipping insertion in model container [2023-02-13 22:18:56,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 10:18:56" (2/3) ... [2023-02-13 22:18:56,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd4898b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.02 10:18:56, skipping insertion in model container [2023-02-13 22:18:56,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 10:18:56" (3/3) ... [2023-02-13 22:18:56,764 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_3.c [2023-02-13 22:18:56,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-13 22:18:56,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-13 22:18:56,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-13 22:18:56,841 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;@1b2470ad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-13 22:18:56,841 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-13 22:18:56,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:18:56,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-13 22:18:56,850 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:18:56,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:18:56,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:18:56,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:18:56,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1939796378, now seen corresponding path program 1 times [2023-02-13 22:18:56,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:18:56,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914888094] [2023-02-13 22:18:56,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:18:56,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:18:56,943 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-13 22:18:56,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172118346] [2023-02-13 22:18:56,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:18:56,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:18:56,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:18:56,946 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) [2023-02-13 22:18:56,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-13 22:18:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:18:57,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-13 22:18:57,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:18:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 22:18:57,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-13 22:18:57,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:18:57,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914888094] [2023-02-13 22:18:57,018 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-13 22:18:57,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172118346] [2023-02-13 22:18:57,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172118346] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 22:18:57,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 22:18:57,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-13 22:18:57,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052306560] [2023-02-13 22:18:57,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 22:18:57,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-13 22:18:57,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:18:57,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-13 22:18:57,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-13 22:18:57,048 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:18:57,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:18:57,061 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2023-02-13 22:18:57,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-13 22:18:57,063 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-13 22:18:57,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:18:57,068 INFO L225 Difference]: With dead ends: 41 [2023-02-13 22:18:57,068 INFO L226 Difference]: Without dead ends: 18 [2023-02-13 22:18:57,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-13 22:18:57,073 INFO L413 NwaCegarLoop]: 26 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, 26 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 [2023-02-13 22:18:57,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 22:18:57,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-02-13 22:18:57,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-02-13 22:18:57,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:18:57,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2023-02-13 22:18:57,097 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2023-02-13 22:18:57,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:18:57,098 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2023-02-13 22:18:57,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:18:57,099 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2023-02-13 22:18:57,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-13 22:18:57,100 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:18:57,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:18:57,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-13 22:18:57,305 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 [2023-02-13 22:18:57,305 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:18:57,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:18:57,306 INFO L85 PathProgramCache]: Analyzing trace with hash -54935082, now seen corresponding path program 1 times [2023-02-13 22:18:57,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:18:57,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679490590] [2023-02-13 22:18:57,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:18:57,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:18:57,318 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-13 22:18:57,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470389042] [2023-02-13 22:18:57,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:18:57,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:18:57,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:18:57,320 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) [2023-02-13 22:18:57,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-13 22:18:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:18:57,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-13 22:18:57,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:18:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 22:18:57,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-13 22:18:57,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:18:57,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679490590] [2023-02-13 22:18:57,418 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-13 22:18:57,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470389042] [2023-02-13 22:18:57,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470389042] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 22:18:57,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 22:18:57,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 22:18:57,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995102306] [2023-02-13 22:18:57,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 22:18:57,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-13 22:18:57,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:18:57,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-13 22:18:57,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-13 22:18:57,421 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:18:57,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:18:57,484 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2023-02-13 22:18:57,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-13 22:18:57,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-13 22:18:57,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:18:57,485 INFO L225 Difference]: With dead ends: 45 [2023-02-13 22:18:57,485 INFO L226 Difference]: Without dead ends: 31 [2023-02-13 22:18:57,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-13 22:18:57,486 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 32 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 22:18:57,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 21 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 22:18:57,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-13 22:18:57,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 20. [2023-02-13 22:18:57,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:18:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-02-13 22:18:57,490 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 11 [2023-02-13 22:18:57,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:18:57,491 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-02-13 22:18:57,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:18:57,491 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-02-13 22:18:57,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-13 22:18:57,492 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:18:57,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:18:57,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-13 22:18:57,699 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 [2023-02-13 22:18:57,700 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:18:57,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:18:57,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1485448361, now seen corresponding path program 1 times [2023-02-13 22:18:57,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:18:57,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429143372] [2023-02-13 22:18:57,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:18:57,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:18:57,712 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-13 22:18:57,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706247419] [2023-02-13 22:18:57,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:18:57,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:18:57,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:18:57,714 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) [2023-02-13 22:18:57,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-13 22:18:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:18:57,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-13 22:18:57,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:18:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 22:18:57,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 22:18:57,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 22:18:57,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:18:57,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429143372] [2023-02-13 22:18:57,848 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-13 22:18:57,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706247419] [2023-02-13 22:18:57,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706247419] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 22:18:57,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-13 22:18:57,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-02-13 22:18:57,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188924693] [2023-02-13 22:18:57,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-13 22:18:57,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-13 22:18:57,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:18:57,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-13 22:18:57,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-02-13 22:18:57,850 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:18:57,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:18:57,941 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2023-02-13 22:18:57,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-13 22:18:57,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-13 22:18:57,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:18:57,946 INFO L225 Difference]: With dead ends: 73 [2023-02-13 22:18:57,952 INFO L226 Difference]: Without dead ends: 59 [2023-02-13 22:18:57,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-02-13 22:18:57,953 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 163 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-13 22:18:57,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 38 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-13 22:18:57,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-13 22:18:57,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2023-02-13 22:18:57,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:18:57,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2023-02-13 22:18:57,968 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 16 [2023-02-13 22:18:57,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:18:57,969 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2023-02-13 22:18:57,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:18:58,001 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2023-02-13 22:18:58,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-13 22:18:58,004 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:18:58,004 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:18:58,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-13 22:18:58,213 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 [2023-02-13 22:18:58,214 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:18:58,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:18:58,214 INFO L85 PathProgramCache]: Analyzing trace with hash -35725226, now seen corresponding path program 1 times [2023-02-13 22:18:58,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:18:58,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970642844] [2023-02-13 22:18:58,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:18:58,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:18:58,227 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-13 22:18:58,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187041053] [2023-02-13 22:18:58,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:18:58,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:18:58,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:18:58,243 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) [2023-02-13 22:18:58,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-13 22:18:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:18:58,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-13 22:18:58,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:18:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 22:18:58,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 22:18:58,495 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 22:18:58,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:18:58,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970642844] [2023-02-13 22:18:58,496 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-13 22:18:58,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187041053] [2023-02-13 22:18:58,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187041053] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 22:18:58,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-13 22:18:58,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-02-13 22:18:58,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793039975] [2023-02-13 22:18:58,497 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-13 22:18:58,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-13 22:18:58,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:18:58,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-13 22:18:58,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2023-02-13 22:18:58,499 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:18:58,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:18:58,653 INFO L93 Difference]: Finished difference Result 155 states and 195 transitions. [2023-02-13 22:18:58,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-13 22:18:58,654 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-02-13 22:18:58,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:18:58,655 INFO L225 Difference]: With dead ends: 155 [2023-02-13 22:18:58,655 INFO L226 Difference]: Without dead ends: 137 [2023-02-13 22:18:58,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2023-02-13 22:18:58,656 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 310 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-13 22:18:58,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 87 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-13 22:18:58,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-02-13 22:18:58,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 64. [2023-02-13 22:18:58,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 63 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:18:58,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2023-02-13 22:18:58,663 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 31 [2023-02-13 22:18:58,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:18:58,663 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2023-02-13 22:18:58,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:18:58,663 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2023-02-13 22:18:58,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-02-13 22:18:58,664 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:18:58,665 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:18:58,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-13 22:18:58,870 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 [2023-02-13 22:18:58,870 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:18:58,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:18:58,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1147663820, now seen corresponding path program 2 times [2023-02-13 22:18:58,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:18:58,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093599974] [2023-02-13 22:18:58,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:18:58,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:18:58,885 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-13 22:18:58,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753750687] [2023-02-13 22:18:58,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-13 22:18:58,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:18:58,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:18:58,886 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) [2023-02-13 22:18:58,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-13 22:18:58,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-13 22:18:58,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-13 22:18:58,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-13 22:18:58,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:18:59,303 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-02-13 22:18:59,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-13 22:18:59,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:18:59,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093599974] [2023-02-13 22:18:59,304 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-13 22:18:59,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753750687] [2023-02-13 22:18:59,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753750687] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 22:18:59,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 22:18:59,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-13 22:18:59,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797664775] [2023-02-13 22:18:59,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 22:18:59,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-13 22:18:59,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:18:59,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-13 22:18:59,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-13 22:18:59,305 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:18:59,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:18:59,355 INFO L93 Difference]: Finished difference Result 76 states and 95 transitions. [2023-02-13 22:18:59,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-13 22:18:59,355 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-02-13 22:18:59,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:18:59,356 INFO L225 Difference]: With dead ends: 76 [2023-02-13 22:18:59,356 INFO L226 Difference]: Without dead ends: 74 [2023-02-13 22:18:59,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-02-13 22:18:59,357 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 38 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 22:18:59,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 30 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 22:18:59,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-02-13 22:18:59,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2023-02-13 22:18:59,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.2753623188405796) internal successors, (88), 69 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:18:59,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2023-02-13 22:18:59,364 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 61 [2023-02-13 22:18:59,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:18:59,364 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2023-02-13 22:18:59,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:18:59,364 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2023-02-13 22:18:59,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-02-13 22:18:59,365 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:18:59,365 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:18:59,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-13 22:18:59,570 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 [2023-02-13 22:18:59,571 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:18:59,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:18:59,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1147723402, now seen corresponding path program 1 times [2023-02-13 22:18:59,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:18:59,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503912586] [2023-02-13 22:18:59,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:18:59,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:18:59,584 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-13 22:18:59,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675536970] [2023-02-13 22:18:59,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:18:59,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:18:59,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:18:59,586 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) [2023-02-13 22:18:59,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-13 22:18:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:18:59,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-13 22:18:59,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:18:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 22:18:59,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 22:19:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 22:19:00,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:19:00,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503912586] [2023-02-13 22:19:00,098 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-13 22:19:00,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675536970] [2023-02-13 22:19:00,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675536970] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 22:19:00,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-13 22:19:00,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-02-13 22:19:00,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617773930] [2023-02-13 22:19:00,099 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-13 22:19:00,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-13 22:19:00,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:19:00,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-13 22:19:00,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2023-02-13 22:19:00,102 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:19:00,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:19:00,635 INFO L93 Difference]: Finished difference Result 463 states and 570 transitions. [2023-02-13 22:19:00,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-13 22:19:00,636 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-02-13 22:19:00,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:19:00,640 INFO L225 Difference]: With dead ends: 463 [2023-02-13 22:19:00,640 INFO L226 Difference]: Without dead ends: 424 [2023-02-13 22:19:00,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=589, Invalid=743, Unknown=0, NotChecked=0, Total=1332 [2023-02-13 22:19:00,643 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 837 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-13 22:19:00,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 184 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-13 22:19:00,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-02-13 22:19:00,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 130. [2023-02-13 22:19:00,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.2868217054263567) internal successors, (166), 129 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:19:00,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 166 transitions. [2023-02-13 22:19:00,678 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 166 transitions. Word has length 61 [2023-02-13 22:19:00,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:19:00,681 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 166 transitions. [2023-02-13 22:19:00,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 25 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:19:00,681 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 166 transitions. [2023-02-13 22:19:00,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-02-13 22:19:00,684 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:19:00,684 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:19:00,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-13 22:19:00,889 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 [2023-02-13 22:19:00,893 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:19:00,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:19:00,893 INFO L85 PathProgramCache]: Analyzing trace with hash 4942966, now seen corresponding path program 2 times [2023-02-13 22:19:00,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:19:00,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637067921] [2023-02-13 22:19:00,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:19:00,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:19:00,917 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-13 22:19:00,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562419962] [2023-02-13 22:19:00,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-13 22:19:00,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:19:00,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:19:00,918 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) [2023-02-13 22:19:00,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-13 22:19:01,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-13 22:19:01,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-13 22:19:01,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-13 22:19:01,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:19:01,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1177 trivial. 0 not checked. [2023-02-13 22:19:01,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-13 22:19:01,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:19:01,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637067921] [2023-02-13 22:19:01,553 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-13 22:19:01,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562419962] [2023-02-13 22:19:01,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562419962] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 22:19:01,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 22:19:01,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-13 22:19:01,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930823889] [2023-02-13 22:19:01,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 22:19:01,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-13 22:19:01,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:19:01,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-13 22:19:01,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-13 22:19:01,555 INFO L87 Difference]: Start difference. First operand 130 states and 166 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:19:01,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:19:01,627 INFO L93 Difference]: Finished difference Result 143 states and 181 transitions. [2023-02-13 22:19:01,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-13 22:19:01,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2023-02-13 22:19:01,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:19:01,629 INFO L225 Difference]: With dead ends: 143 [2023-02-13 22:19:01,629 INFO L226 Difference]: Without dead ends: 141 [2023-02-13 22:19:01,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-02-13 22:19:01,632 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 64 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-13 22:19:01,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 44 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-13 22:19:01,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-02-13 22:19:01,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 136. [2023-02-13 22:19:01,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.2814814814814814) internal successors, (173), 135 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:19:01,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 173 transitions. [2023-02-13 22:19:01,646 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 173 transitions. Word has length 121 [2023-02-13 22:19:01,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:19:01,647 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 173 transitions. [2023-02-13 22:19:01,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:19:01,647 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 173 transitions. [2023-02-13 22:19:01,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-02-13 22:19:01,656 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:19:01,657 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:19:01,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-13 22:19:01,862 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 [2023-02-13 22:19:01,862 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:19:01,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:19:01,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1531894057, now seen corresponding path program 1 times [2023-02-13 22:19:01,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:19:01,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619936699] [2023-02-13 22:19:01,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:19:01,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:19:01,881 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-13 22:19:01,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368971732] [2023-02-13 22:19:01,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:19:01,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:19:01,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:19:01,883 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) [2023-02-13 22:19:01,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-13 22:19:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:19:01,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-13 22:19:02,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:19:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-13 22:19:02,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 22:19:03,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-13 22:19:03,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:19:03,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619936699] [2023-02-13 22:19:03,044 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-13 22:19:03,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368971732] [2023-02-13 22:19:03,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368971732] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 22:19:03,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-13 22:19:03,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2023-02-13 22:19:03,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570887844] [2023-02-13 22:19:03,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-13 22:19:03,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-02-13 22:19:03,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:19:03,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-02-13 22:19:03,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1179, Invalid=1271, Unknown=0, NotChecked=0, Total=2450 [2023-02-13 22:19:03,047 INFO L87 Difference]: Start difference. First operand 136 states and 173 transitions. Second operand has 50 states, 50 states have (on average 4.78) internal successors, (239), 49 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:19:04,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:19:04,772 INFO L93 Difference]: Finished difference Result 1222 states and 1488 transitions. [2023-02-13 22:19:04,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-02-13 22:19:04,773 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.78) internal successors, (239), 49 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2023-02-13 22:19:04,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:19:04,775 INFO L225 Difference]: With dead ends: 1222 [2023-02-13 22:19:04,776 INFO L226 Difference]: Without dead ends: 1147 [2023-02-13 22:19:04,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2329, Invalid=2927, Unknown=0, NotChecked=0, Total=5256 [2023-02-13 22:19:04,778 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 2446 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2446 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-13 22:19:04,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2446 Valid, 374 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-13 22:19:04,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2023-02-13 22:19:04,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 256. [2023-02-13 22:19:04,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.2901960784313726) internal successors, (329), 255 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:19:04,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 329 transitions. [2023-02-13 22:19:04,844 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 329 transitions. Word has length 127 [2023-02-13 22:19:04,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:19:04,845 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 329 transitions. [2023-02-13 22:19:04,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.78) internal successors, (239), 49 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:19:04,846 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 329 transitions. [2023-02-13 22:19:04,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-02-13 22:19:04,849 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:19:04,849 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 23, 23, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:19:04,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-13 22:19:05,055 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 [2023-02-13 22:19:05,056 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:19:05,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:19:05,057 INFO L85 PathProgramCache]: Analyzing trace with hash -456351959, now seen corresponding path program 2 times [2023-02-13 22:19:05,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:19:05,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138396956] [2023-02-13 22:19:05,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:19:05,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:19:05,093 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-13 22:19:05,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670605873] [2023-02-13 22:19:05,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-13 22:19:05,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:19:05,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:19:05,111 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) [2023-02-13 22:19:05,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-13 22:19:05,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-13 22:19:05,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-13 22:19:05,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-13 22:19:05,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:19:06,835 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-13 22:19:06,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 22:19:08,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5225 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-13 22:19:08,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:19:08,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138396956] [2023-02-13 22:19:08,614 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-13 22:19:08,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670605873] [2023-02-13 22:19:08,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670605873] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 22:19:08,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-13 22:19:08,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 97 [2023-02-13 22:19:08,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240678856] [2023-02-13 22:19:08,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-13 22:19:08,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-02-13 22:19:08,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:19:08,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-02-13 22:19:08,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4659, Invalid=4847, Unknown=0, NotChecked=0, Total=9506 [2023-02-13 22:19:08,622 INFO L87 Difference]: Start difference. First operand 256 states and 329 transitions. Second operand has 98 states, 98 states have (on average 4.887755102040816) internal successors, (479), 97 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:19:14,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:19:14,743 INFO L93 Difference]: Finished difference Result 2482 states and 3024 transitions. [2023-02-13 22:19:14,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-02-13 22:19:14,744 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 4.887755102040816) internal successors, (479), 97 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 247 [2023-02-13 22:19:14,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:19:14,758 INFO L225 Difference]: With dead ends: 2482 [2023-02-13 22:19:14,759 INFO L226 Difference]: Without dead ends: 2347 [2023-02-13 22:19:14,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4465 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=9265, Invalid=11615, Unknown=0, NotChecked=0, Total=20880 [2023-02-13 22:19:14,764 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 5045 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5045 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-02-13 22:19:14,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5045 Valid, 762 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-02-13 22:19:14,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2023-02-13 22:19:14,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 496. [2023-02-13 22:19:14,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 495 states have (on average 1.2949494949494949) internal successors, (641), 495 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:19:14,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 641 transitions. [2023-02-13 22:19:14,794 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 641 transitions. Word has length 247 [2023-02-13 22:19:14,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:19:14,794 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 641 transitions. [2023-02-13 22:19:14,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 4.887755102040816) internal successors, (479), 97 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:19:14,795 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 641 transitions. [2023-02-13 22:19:14,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2023-02-13 22:19:14,799 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:19:14,799 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 47, 47, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:19:14,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-02-13 22:19:15,007 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 [2023-02-13 22:19:15,007 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:19:15,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:19:15,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1703865129, now seen corresponding path program 3 times [2023-02-13 22:19:15,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:19:15,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835498776] [2023-02-13 22:19:15,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:19:15,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:19:15,109 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-13 22:19:15,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47738219] [2023-02-13 22:19:15,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-13 22:19:15,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:19:15,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:19:15,124 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) [2023-02-13 22:19:15,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-13 22:19:15,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-13 22:19:15,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-13 22:19:15,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-13 22:19:15,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:19:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 21953 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21949 trivial. 0 not checked. [2023-02-13 22:19:17,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 22:19:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 21953 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21949 trivial. 0 not checked. [2023-02-13 22:19:35,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:19:35,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835498776] [2023-02-13 22:19:35,488 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-13 22:19:35,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47738219] [2023-02-13 22:19:35,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47738219] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 22:19:35,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-13 22:19:35,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-02-13 22:19:35,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305511782] [2023-02-13 22:19:35,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-13 22:19:35,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-13 22:19:35,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:19:35,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-13 22:19:35,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-02-13 22:19:35,491 INFO L87 Difference]: Start difference. First operand 496 states and 641 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:19:37,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:19:37,742 INFO L93 Difference]: Finished difference Result 527 states and 680 transitions. [2023-02-13 22:19:37,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-13 22:19:37,742 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 487 [2023-02-13 22:19:37,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:19:37,744 INFO L225 Difference]: With dead ends: 527 [2023-02-13 22:19:37,744 INFO L226 Difference]: Without dead ends: 525 [2023-02-13 22:19:37,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 959 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-02-13 22:19:37,745 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 160 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-13 22:19:37,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 97 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-02-13 22:19:37,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2023-02-13 22:19:37,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 520. [2023-02-13 22:19:37,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 519 states have (on average 1.2890173410404624) internal successors, (669), 519 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:19:37,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 669 transitions. [2023-02-13 22:19:37,788 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 669 transitions. Word has length 487 [2023-02-13 22:19:37,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:19:37,789 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 669 transitions. [2023-02-13 22:19:37,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:19:37,789 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 669 transitions. [2023-02-13 22:19:37,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2023-02-13 22:19:37,794 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:19:37,794 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 47, 47, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:19:37,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-13 22:19:38,006 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 [2023-02-13 22:19:38,007 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:19:38,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:19:38,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1887291253, now seen corresponding path program 4 times [2023-02-13 22:19:38,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:19:38,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540636789] [2023-02-13 22:19:38,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:19:38,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:19:38,085 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-13 22:19:38,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522209307] [2023-02-13 22:19:38,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-13 22:19:38,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:19:38,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:19:38,088 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) [2023-02-13 22:19:38,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-13 22:19:38,390 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-13 22:19:38,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-13 22:19:38,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-13 22:19:38,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:19:38,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2023-02-13 22:19:38,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-02-13 22:19:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 22029 backedges. 831 proven. 4 refuted. 0 times theorem prover too weak. 21194 trivial. 0 not checked. [2023-02-13 22:19:38,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 22:19:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 22029 backedges. 831 proven. 4 refuted. 0 times theorem prover too weak. 21194 trivial. 0 not checked. [2023-02-13 22:19:38,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:19:38,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540636789] [2023-02-13 22:19:38,534 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-13 22:19:38,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522209307] [2023-02-13 22:19:38,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522209307] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 22:19:38,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-13 22:19:38,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-02-13 22:19:38,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119771642] [2023-02-13 22:19:38,535 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-13 22:19:38,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-13 22:19:38,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:19:38,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-13 22:19:38,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-02-13 22:19:38,537 INFO L87 Difference]: Start difference. First operand 520 states and 669 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:19:38,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:19:38,782 INFO L93 Difference]: Finished difference Result 1108 states and 1415 transitions. [2023-02-13 22:19:38,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-13 22:19:38,782 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 511 [2023-02-13 22:19:38,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:19:38,784 INFO L225 Difference]: With dead ends: 1108 [2023-02-13 22:19:38,784 INFO L226 Difference]: Without dead ends: 596 [2023-02-13 22:19:38,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1028 GetRequests, 1012 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2023-02-13 22:19:38,787 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 52 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-13 22:19:38,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 112 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-13 22:19:38,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2023-02-13 22:19:38,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 520. [2023-02-13 22:19:38,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 519 states have (on average 1.28131021194605) internal successors, (665), 519 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:19:38,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 665 transitions. [2023-02-13 22:19:38,813 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 665 transitions. Word has length 511 [2023-02-13 22:19:38,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:19:38,814 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 665 transitions. [2023-02-13 22:19:38,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:19:38,814 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 665 transitions. [2023-02-13 22:19:38,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2023-02-13 22:19:38,816 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:19:38,816 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 90, 47, 47, 6, 6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:19:38,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-13 22:19:39,023 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 [2023-02-13 22:19:39,023 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:19:39,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:19:39,024 INFO L85 PathProgramCache]: Analyzing trace with hash 593762805, now seen corresponding path program 1 times [2023-02-13 22:19:39,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:19:39,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396041571] [2023-02-13 22:19:39,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:19:39,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:19:39,071 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-13 22:19:39,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195362030] [2023-02-13 22:19:39,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:19:39,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:19:39,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:19:39,073 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) [2023-02-13 22:19:39,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-13 22:19:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 22:19:39,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1685 conjuncts, 97 conjunts are in the unsatisfiable core [2023-02-13 22:19:39,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:19:43,470 INFO L134 CoverageAnalysis]: Checked inductivity of 22029 backedges. 0 proven. 21949 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-02-13 22:19:43,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 22:19:48,966 INFO L134 CoverageAnalysis]: Checked inductivity of 22029 backedges. 0 proven. 21949 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-02-13 22:19:48,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:19:48,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396041571] [2023-02-13 22:19:48,966 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-13 22:19:48,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195362030] [2023-02-13 22:19:48,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195362030] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 22:19:48,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-13 22:19:48,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 193 [2023-02-13 22:19:48,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33877009] [2023-02-13 22:19:48,967 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-13 22:19:48,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2023-02-13 22:19:48,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:19:48,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2023-02-13 22:19:48,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18531, Invalid=18911, Unknown=0, NotChecked=0, Total=37442 [2023-02-13 22:19:48,982 INFO L87 Difference]: Start difference. First operand 520 states and 665 transitions. Second operand has 194 states, 194 states have (on average 4.943298969072165) internal successors, (959), 193 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:20:33,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 22:20:33,079 INFO L93 Difference]: Finished difference Result 9490 states and 11326 transitions. [2023-02-13 22:20:33,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-02-13 22:20:33,080 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 194 states have (on average 4.943298969072165) internal successors, (959), 193 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 511 [2023-02-13 22:20:33,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 22:20:33,102 INFO L225 Difference]: With dead ends: 9490 [2023-02-13 22:20:33,103 INFO L226 Difference]: Without dead ends: 9211 [2023-02-13 22:20:33,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1115 GetRequests, 828 SyntacticMatches, 0 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18145 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=36961, Invalid=46271, Unknown=0, NotChecked=0, Total=83232 [2023-02-13 22:20:33,110 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 9421 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 890 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9421 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 2344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 890 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-02-13 22:20:33,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9421 Valid, 1523 Invalid, 2344 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [890 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-02-13 22:20:33,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9211 states. [2023-02-13 22:20:33,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9211 to 1000. [2023-02-13 22:20:33,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 999 states have (on average 1.2902902902902902) internal successors, (1289), 999 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:20:33,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1289 transitions. [2023-02-13 22:20:33,195 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1289 transitions. Word has length 511 [2023-02-13 22:20:33,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 22:20:33,195 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1289 transitions. [2023-02-13 22:20:33,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 194 states have (on average 4.943298969072165) internal successors, (959), 193 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 22:20:33,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1289 transitions. [2023-02-13 22:20:33,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2023-02-13 22:20:33,202 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 22:20:33,203 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 190, 186, 95, 95, 6, 6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-13 22:20:33,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-13 22:20:33,412 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 [2023-02-13 22:20:33,412 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 22:20:33,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 22:20:33,413 INFO L85 PathProgramCache]: Analyzing trace with hash 847622645, now seen corresponding path program 2 times [2023-02-13 22:20:33,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 22:20:33,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234207066] [2023-02-13 22:20:33,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 22:20:33,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 22:20:33,495 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-13 22:20:33,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704098913] [2023-02-13 22:20:33,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-13 22:20:33,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 22:20:33,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 22:20:33,514 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) [2023-02-13 22:20:33,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-13 22:20:34,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-13 22:20:34,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-13 22:20:34,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 3269 conjuncts, 193 conjunts are in the unsatisfiable core [2023-02-13 22:20:34,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 22:20:45,409 INFO L134 CoverageAnalysis]: Checked inductivity of 90045 backedges. 0 proven. 89965 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-02-13 22:20:45,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 22:21:08,056 INFO L134 CoverageAnalysis]: Checked inductivity of 90045 backedges. 0 proven. 89965 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-02-13 22:21:08,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 22:21:08,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234207066] [2023-02-13 22:21:08,062 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-13 22:21:08,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704098913] [2023-02-13 22:21:08,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704098913] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 22:21:08,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-13 22:21:08,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193] total 385 [2023-02-13 22:21:08,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987512506] [2023-02-13 22:21:08,063 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-13 22:21:08,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 386 states [2023-02-13 22:21:08,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 22:21:08,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 386 interpolants. [2023-02-13 22:21:08,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73923, Invalid=74687, Unknown=0, NotChecked=0, Total=148610 [2023-02-13 22:21:08,087 INFO L87 Difference]: Start difference. First operand 1000 states and 1289 transitions. Second operand has 386 states, 386 states have (on average 4.971502590673575) internal successors, (1919), 385 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)