./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label35.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label35.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 bf2e434ddb1157766f0427b524597e37ed925d60033c6d19795be6a9bcd22934 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 04:39:30,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 04:39:30,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 04:39:30,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 04:39:30,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 04:39:30,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 04:39:30,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 04:39:30,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 04:39:30,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 04:39:30,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 04:39:30,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 04:39:30,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 04:39:30,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 04:39:30,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 04:39:30,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 04:39:30,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 04:39:30,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 04:39:30,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 04:39:30,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 04:39:30,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 04:39:30,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 04:39:30,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 04:39:30,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 04:39:30,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 04:39:30,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 04:39:30,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 04:39:30,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 04:39:30,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 04:39:30,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 04:39:30,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 04:39:30,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 04:39:30,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 04:39:30,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 04:39:30,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 04:39:30,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 04:39:30,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 04:39:30,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 04:39:30,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 04:39:30,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 04:39:30,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 04:39:30,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 04:39:30,622 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 04:39:30,639 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 04:39:30,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 04:39:30,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 04:39:30,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 04:39:30,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 04:39:30,641 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 04:39:30,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 04:39:30,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 04:39:30,642 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 04:39:30,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 04:39:30,643 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 04:39:30,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 04:39:30,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 04:39:30,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 04:39:30,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 04:39:30,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 04:39:30,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 04:39:30,644 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 04:39:30,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 04:39:30,644 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 04:39:30,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 04:39:30,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 04:39:30,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 04:39:30,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 04:39:30,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 04:39:30,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 04:39:30,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 04:39:30,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 04:39:30,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 04:39:30,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 04:39:30,646 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 04:39:30,647 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 04:39:30,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 04:39:30,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 04:39:30,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf2e434ddb1157766f0427b524597e37ed925d60033c6d19795be6a9bcd22934 [2021-12-17 04:39:30,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 04:39:30,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 04:39:30,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 04:39:30,876 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 04:39:30,876 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 04:39:30,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label35.c [2021-12-17 04:39:30,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91ed4a0f0/2986232a513c410b96e812b341c43145/FLAG1ca6fdf99 [2021-12-17 04:39:31,487 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 04:39:31,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label35.c [2021-12-17 04:39:31,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91ed4a0f0/2986232a513c410b96e812b341c43145/FLAG1ca6fdf99 [2021-12-17 04:39:31,896 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91ed4a0f0/2986232a513c410b96e812b341c43145 [2021-12-17 04:39:31,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 04:39:31,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 04:39:31,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 04:39:31,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 04:39:31,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 04:39:31,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:39:31" (1/1) ... [2021-12-17 04:39:31,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25c9abc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:39:31, skipping insertion in model container [2021-12-17 04:39:31,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:39:31" (1/1) ... [2021-12-17 04:39:31,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 04:39:31,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 04:39:32,185 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label35.c[1793,1806] [2021-12-17 04:39:32,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 04:39:32,795 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 04:39:32,811 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label35.c[1793,1806] [2021-12-17 04:39:33,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 04:39:33,226 INFO L208 MainTranslator]: Completed translation [2021-12-17 04:39:33,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:39:33 WrapperNode [2021-12-17 04:39:33,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 04:39:33,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 04:39:33,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 04:39:33,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 04:39:33,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:39:33" (1/1) ... [2021-12-17 04:39:33,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:39:33" (1/1) ... [2021-12-17 04:39:33,733 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2021-12-17 04:39:33,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 04:39:33,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 04:39:33,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 04:39:33,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 04:39:33,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:39:33" (1/1) ... [2021-12-17 04:39:33,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:39:33" (1/1) ... [2021-12-17 04:39:33,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:39:33" (1/1) ... [2021-12-17 04:39:33,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:39:33" (1/1) ... [2021-12-17 04:39:33,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:39:33" (1/1) ... [2021-12-17 04:39:34,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:39:33" (1/1) ... [2021-12-17 04:39:34,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:39:33" (1/1) ... [2021-12-17 04:39:34,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 04:39:34,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 04:39:34,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 04:39:34,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 04:39:34,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:39:33" (1/1) ... [2021-12-17 04:39:34,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 04:39:34,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:39:34,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 04:39:34,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 04:39:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 04:39:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 04:39:34,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 04:39:34,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 04:39:34,450 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 04:39:34,452 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 04:39:37,795 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 04:39:37,805 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 04:39:37,806 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 04:39:37,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:39:37 BoogieIcfgContainer [2021-12-17 04:39:37,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 04:39:37,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 04:39:37,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 04:39:37,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 04:39:37,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:39:31" (1/3) ... [2021-12-17 04:39:37,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9ae7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:39:37, skipping insertion in model container [2021-12-17 04:39:37,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:39:33" (2/3) ... [2021-12-17 04:39:37,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9ae7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:39:37, skipping insertion in model container [2021-12-17 04:39:37,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:39:37" (3/3) ... [2021-12-17 04:39:37,814 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label35.c [2021-12-17 04:39:37,817 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 04:39:37,817 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 04:39:37,849 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 04:39:37,853 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 04:39:37,853 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 04:39:37,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:39:37,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-17 04:39:37,890 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:39:37,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:39:37,891 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:39:37,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:39:37,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1417350502, now seen corresponding path program 1 times [2021-12-17 04:39:37,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:39:37,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952284779] [2021-12-17 04:39:37,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:39:37,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:39:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:39:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:39:38,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:39:38,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952284779] [2021-12-17 04:39:38,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952284779] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:39:38,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:39:38,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:39:38,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719811391] [2021-12-17 04:39:38,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:39:38,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:39:38,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:39:38,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:39:38,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:39:38,048 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:39:41,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:39:41,999 INFO L93 Difference]: Finished difference Result 3160 states and 5843 transitions. [2021-12-17 04:39:42,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:39:42,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-12-17 04:39:42,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:39:42,022 INFO L225 Difference]: With dead ends: 3160 [2021-12-17 04:39:42,023 INFO L226 Difference]: Without dead ends: 1983 [2021-12-17 04:39:42,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:39:42,039 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 1093 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-17 04:39:42,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1093 Valid, 340 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [974 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-12-17 04:39:42,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2021-12-17 04:39:42,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1930. [2021-12-17 04:39:42,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 1.7973043027475375) internal successors, (3467), 1929 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:39:42,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 3467 transitions. [2021-12-17 04:39:42,124 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 3467 transitions. Word has length 10 [2021-12-17 04:39:42,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:39:42,124 INFO L470 AbstractCegarLoop]: Abstraction has 1930 states and 3467 transitions. [2021-12-17 04:39:42,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:39:42,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 3467 transitions. [2021-12-17 04:39:42,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-17 04:39:42,126 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:39:42,126 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:39:42,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 04:39:42,127 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:39:42,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:39:42,127 INFO L85 PathProgramCache]: Analyzing trace with hash -2107929182, now seen corresponding path program 1 times [2021-12-17 04:39:42,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:39:42,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776746878] [2021-12-17 04:39:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:39:42,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:39:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:39:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:39:42,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:39:42,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776746878] [2021-12-17 04:39:42,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776746878] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:39:42,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:39:42,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:39:42,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915578210] [2021-12-17 04:39:42,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:39:42,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:39:42,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:39:42,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:39:42,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:39:42,251 INFO L87 Difference]: Start difference. First operand 1930 states and 3467 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:39:47,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:39:47,172 INFO L93 Difference]: Finished difference Result 6254 states and 11380 transitions. [2021-12-17 04:39:47,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:39:47,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-12-17 04:39:47,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:39:47,186 INFO L225 Difference]: With dead ends: 6254 [2021-12-17 04:39:47,186 INFO L226 Difference]: Without dead ends: 4326 [2021-12-17 04:39:47,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 04:39:47,195 INFO L933 BasicCegarLoop]: 737 mSDtfsCounter, 2618 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 4156 mSolverCounterSat, 1434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2618 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 5590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1434 IncrementalHoareTripleChecker+Valid, 4156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-17 04:39:47,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2618 Valid, 1036 Invalid, 5590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1434 Valid, 4156 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-17 04:39:47,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2021-12-17 04:39:47,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 4323. [2021-12-17 04:39:47,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4323 states, 4322 states have (on average 1.529615918556224) internal successors, (6611), 4322 states have internal predecessors, (6611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:39:47,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4323 states to 4323 states and 6611 transitions. [2021-12-17 04:39:47,279 INFO L78 Accepts]: Start accepts. Automaton has 4323 states and 6611 transitions. Word has length 75 [2021-12-17 04:39:47,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:39:47,280 INFO L470 AbstractCegarLoop]: Abstraction has 4323 states and 6611 transitions. [2021-12-17 04:39:47,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:39:47,280 INFO L276 IsEmpty]: Start isEmpty. Operand 4323 states and 6611 transitions. [2021-12-17 04:39:47,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 04:39:47,283 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:39:47,283 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:39:47,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 04:39:47,284 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:39:47,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:39:47,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1429446939, now seen corresponding path program 1 times [2021-12-17 04:39:47,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:39:47,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119167264] [2021-12-17 04:39:47,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:39:47,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:39:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:39:47,571 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:39:47,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:39:47,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119167264] [2021-12-17 04:39:47,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119167264] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:39:47,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119862313] [2021-12-17 04:39:47,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:39:47,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:39:47,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:39:47,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 04:39:47,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 04:39:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:39:47,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 04:39:47,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:39:47,940 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-17 04:39:47,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 04:39:47,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119862313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:39:47,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 04:39:47,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-17 04:39:47,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940925989] [2021-12-17 04:39:47,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:39:47,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:39:47,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:39:47,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:39:47,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:39:47,943 INFO L87 Difference]: Start difference. First operand 4323 states and 6611 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:39:50,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:39:50,754 INFO L93 Difference]: Finished difference Result 11043 states and 17778 transitions. [2021-12-17 04:39:50,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:39:50,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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 135 [2021-12-17 04:39:50,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:39:50,779 INFO L225 Difference]: With dead ends: 11043 [2021-12-17 04:39:50,779 INFO L226 Difference]: Without dead ends: 7509 [2021-12-17 04:39:50,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:39:50,786 INFO L933 BasicCegarLoop]: 1036 mSDtfsCounter, 743 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 3284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-17 04:39:50,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 1184 Invalid, 3284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-17 04:39:50,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7509 states. [2021-12-17 04:39:50,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7509 to 7489. [2021-12-17 04:39:50,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7489 states, 7488 states have (on average 1.3768696581196582) internal successors, (10310), 7488 states have internal predecessors, (10310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:39:50,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7489 states to 7489 states and 10310 transitions. [2021-12-17 04:39:50,880 INFO L78 Accepts]: Start accepts. Automaton has 7489 states and 10310 transitions. Word has length 135 [2021-12-17 04:39:50,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:39:50,881 INFO L470 AbstractCegarLoop]: Abstraction has 7489 states and 10310 transitions. [2021-12-17 04:39:50,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:39:50,881 INFO L276 IsEmpty]: Start isEmpty. Operand 7489 states and 10310 transitions. [2021-12-17 04:39:50,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-17 04:39:50,887 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:39:50,887 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:39:50,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 04:39:51,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:39:51,099 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:39:51,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:39:51,100 INFO L85 PathProgramCache]: Analyzing trace with hash 257980850, now seen corresponding path program 1 times [2021-12-17 04:39:51,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:39:51,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299329056] [2021-12-17 04:39:51,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:39:51,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:39:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:39:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-17 04:39:51,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:39:51,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299329056] [2021-12-17 04:39:51,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299329056] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:39:51,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:39:51,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:39:51,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369392752] [2021-12-17 04:39:51,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:39:51,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:39:51,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:39:51,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:39:51,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:39:51,226 INFO L87 Difference]: Start difference. First operand 7489 states and 10310 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:39:54,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:39:54,055 INFO L93 Difference]: Finished difference Result 20512 states and 28844 transitions. [2021-12-17 04:39:54,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:39:54,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2021-12-17 04:39:54,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:39:54,096 INFO L225 Difference]: With dead ends: 20512 [2021-12-17 04:39:54,098 INFO L226 Difference]: Without dead ends: 13812 [2021-12-17 04:39:54,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:39:54,107 INFO L933 BasicCegarLoop]: 810 mSDtfsCounter, 908 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2561 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 3316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 2561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-17 04:39:54,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 941 Invalid, 3316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 2561 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-17 04:39:54,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13812 states. [2021-12-17 04:39:54,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13812 to 13805. [2021-12-17 04:39:54,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13805 states, 13804 states have (on average 1.296073601854535) internal successors, (17891), 13804 states have internal predecessors, (17891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:39:54,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13805 states to 13805 states and 17891 transitions. [2021-12-17 04:39:54,323 INFO L78 Accepts]: Start accepts. Automaton has 13805 states and 17891 transitions. Word has length 177 [2021-12-17 04:39:54,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:39:54,325 INFO L470 AbstractCegarLoop]: Abstraction has 13805 states and 17891 transitions. [2021-12-17 04:39:54,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:39:54,325 INFO L276 IsEmpty]: Start isEmpty. Operand 13805 states and 17891 transitions. [2021-12-17 04:39:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-12-17 04:39:54,329 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:39:54,329 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:39:54,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 04:39:54,330 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:39:54,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:39:54,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1218485360, now seen corresponding path program 1 times [2021-12-17 04:39:54,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:39:54,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470121490] [2021-12-17 04:39:54,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:39:54,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:39:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:39:54,420 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:39:54,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:39:54,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470121490] [2021-12-17 04:39:54,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470121490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:39:54,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:39:54,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:39:54,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092445719] [2021-12-17 04:39:54,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:39:54,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:39:54,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:39:54,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:39:54,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:39:54,423 INFO L87 Difference]: Start difference. First operand 13805 states and 17891 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:39:59,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:39:59,651 INFO L93 Difference]: Finished difference Result 38804 states and 51117 transitions. [2021-12-17 04:39:59,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:39:59,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 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 207 [2021-12-17 04:39:59,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:39:59,693 INFO L225 Difference]: With dead ends: 38804 [2021-12-17 04:39:59,693 INFO L226 Difference]: Without dead ends: 25788 [2021-12-17 04:39:59,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:39:59,703 INFO L933 BasicCegarLoop]: 1077 mSDtfsCounter, 1642 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 5860 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 6556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 5860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-17 04:39:59,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1642 Valid, 1248 Invalid, 6556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 5860 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-12-17 04:39:59,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25788 states. [2021-12-17 04:39:59,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25788 to 25646. [2021-12-17 04:39:59,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25646 states, 25645 states have (on average 1.2610645349970755) internal successors, (32340), 25645 states have internal predecessors, (32340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:00,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25646 states to 25646 states and 32340 transitions. [2021-12-17 04:40:00,007 INFO L78 Accepts]: Start accepts. Automaton has 25646 states and 32340 transitions. Word has length 207 [2021-12-17 04:40:00,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:40:00,008 INFO L470 AbstractCegarLoop]: Abstraction has 25646 states and 32340 transitions. [2021-12-17 04:40:00,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:00,008 INFO L276 IsEmpty]: Start isEmpty. Operand 25646 states and 32340 transitions. [2021-12-17 04:40:00,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-12-17 04:40:00,010 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:40:00,010 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:40:00,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 04:40:00,010 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:40:00,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:40:00,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1316552065, now seen corresponding path program 1 times [2021-12-17 04:40:00,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:40:00,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672748460] [2021-12-17 04:40:00,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:40:00,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:40:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:40:00,092 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:40:00,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:40:00,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672748460] [2021-12-17 04:40:00,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672748460] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:40:00,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:40:00,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:40:00,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442704283] [2021-12-17 04:40:00,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:40:00,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:40:00,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:40:00,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:40:00,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:00,095 INFO L87 Difference]: Start difference. First operand 25646 states and 32340 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:03,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:40:03,166 INFO L93 Difference]: Finished difference Result 62349 states and 80741 transitions. [2021-12-17 04:40:03,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:40:03,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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 222 [2021-12-17 04:40:03,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:40:03,221 INFO L225 Difference]: With dead ends: 62349 [2021-12-17 04:40:03,222 INFO L226 Difference]: Without dead ends: 37492 [2021-12-17 04:40:03,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:03,251 INFO L933 BasicCegarLoop]: 1850 mSDtfsCounter, 756 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2594 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 3312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 2594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-17 04:40:03,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 1994 Invalid, 3312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 2594 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-17 04:40:03,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37492 states. [2021-12-17 04:40:03,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37492 to 37456. [2021-12-17 04:40:03,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37456 states, 37455 states have (on average 1.2191963689761047) internal successors, (45665), 37455 states have internal predecessors, (45665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37456 states to 37456 states and 45665 transitions. [2021-12-17 04:40:03,723 INFO L78 Accepts]: Start accepts. Automaton has 37456 states and 45665 transitions. Word has length 222 [2021-12-17 04:40:03,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:40:03,724 INFO L470 AbstractCegarLoop]: Abstraction has 37456 states and 45665 transitions. [2021-12-17 04:40:03,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:03,724 INFO L276 IsEmpty]: Start isEmpty. Operand 37456 states and 45665 transitions. [2021-12-17 04:40:03,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-17 04:40:03,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:40:03,726 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:40:03,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 04:40:03,727 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:40:03,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:40:03,728 INFO L85 PathProgramCache]: Analyzing trace with hash -2104272133, now seen corresponding path program 1 times [2021-12-17 04:40:03,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:40:03,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163721672] [2021-12-17 04:40:03,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:40:03,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:40:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:40:03,808 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:40:03,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:40:03,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163721672] [2021-12-17 04:40:03,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163721672] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:40:03,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:40:03,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:40:03,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33731513] [2021-12-17 04:40:03,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:40:03,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:40:03,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:40:03,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:40:03,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:03,812 INFO L87 Difference]: Start difference. First operand 37456 states and 45665 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:06,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:40:06,411 INFO L93 Difference]: Finished difference Result 74105 states and 90519 transitions. [2021-12-17 04:40:06,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:40:06,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 224 [2021-12-17 04:40:06,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:40:06,459 INFO L225 Difference]: With dead ends: 74105 [2021-12-17 04:40:06,459 INFO L226 Difference]: Without dead ends: 37438 [2021-12-17 04:40:06,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:06,490 INFO L933 BasicCegarLoop]: 1495 mSDtfsCounter, 1036 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2340 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 2949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 2340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:40:06,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 1639 Invalid, 2949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 2340 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-17 04:40:06,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37438 states. [2021-12-17 04:40:06,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37438 to 37432. [2021-12-17 04:40:06,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37432 states, 37431 states have (on average 1.1478186529881649) internal successors, (42964), 37431 states have internal predecessors, (42964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:07,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37432 states to 37432 states and 42964 transitions. [2021-12-17 04:40:07,035 INFO L78 Accepts]: Start accepts. Automaton has 37432 states and 42964 transitions. Word has length 224 [2021-12-17 04:40:07,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:40:07,035 INFO L470 AbstractCegarLoop]: Abstraction has 37432 states and 42964 transitions. [2021-12-17 04:40:07,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:07,036 INFO L276 IsEmpty]: Start isEmpty. Operand 37432 states and 42964 transitions. [2021-12-17 04:40:07,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-12-17 04:40:07,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:40:07,039 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:40:07,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 04:40:07,039 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:40:07,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:40:07,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1288125869, now seen corresponding path program 1 times [2021-12-17 04:40:07,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:40:07,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292109505] [2021-12-17 04:40:07,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:40:07,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:40:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:40:07,114 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-12-17 04:40:07,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:40:07,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292109505] [2021-12-17 04:40:07,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292109505] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:40:07,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:40:07,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:40:07,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250221857] [2021-12-17 04:40:07,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:40:07,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:40:07,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:40:07,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:40:07,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:07,116 INFO L87 Difference]: Start difference. First operand 37432 states and 42964 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 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) [2021-12-17 04:40:10,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:40:10,211 INFO L93 Difference]: Finished difference Result 103975 states and 119910 transitions. [2021-12-17 04:40:10,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:40:10,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 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) Word has length 256 [2021-12-17 04:40:10,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:40:10,378 INFO L225 Difference]: With dead ends: 103975 [2021-12-17 04:40:10,378 INFO L226 Difference]: Without dead ends: 64966 [2021-12-17 04:40:10,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:10,395 INFO L933 BasicCegarLoop]: 912 mSDtfsCounter, 844 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 863 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 3220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 863 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-17 04:40:10,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [844 Valid, 1048 Invalid, 3220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [863 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-17 04:40:10,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64966 states. [2021-12-17 04:40:10,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64966 to 60236. [2021-12-17 04:40:11,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60236 states, 60235 states have (on average 1.1142857142857143) internal successors, (67119), 60235 states have internal predecessors, (67119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:11,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60236 states to 60236 states and 67119 transitions. [2021-12-17 04:40:11,078 INFO L78 Accepts]: Start accepts. Automaton has 60236 states and 67119 transitions. Word has length 256 [2021-12-17 04:40:11,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:40:11,078 INFO L470 AbstractCegarLoop]: Abstraction has 60236 states and 67119 transitions. [2021-12-17 04:40:11,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 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) [2021-12-17 04:40:11,079 INFO L276 IsEmpty]: Start isEmpty. Operand 60236 states and 67119 transitions. [2021-12-17 04:40:11,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-12-17 04:40:11,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:40:11,083 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:40:11,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 04:40:11,083 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:40:11,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:40:11,084 INFO L85 PathProgramCache]: Analyzing trace with hash -949171357, now seen corresponding path program 1 times [2021-12-17 04:40:11,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:40:11,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391906582] [2021-12-17 04:40:11,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:40:11,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:40:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:40:11,170 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-17 04:40:11,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:40:11,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391906582] [2021-12-17 04:40:11,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391906582] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:40:11,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:40:11,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:40:11,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100718762] [2021-12-17 04:40:11,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:40:11,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:40:11,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:40:11,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:40:11,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:11,175 INFO L87 Difference]: Start difference. First operand 60236 states and 67119 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:14,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:40:14,261 INFO L93 Difference]: Finished difference Result 129903 states and 146001 transitions. [2021-12-17 04:40:14,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:40:14,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 325 [2021-12-17 04:40:14,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:40:14,347 INFO L225 Difference]: With dead ends: 129903 [2021-12-17 04:40:14,348 INFO L226 Difference]: Without dead ends: 70456 [2021-12-17 04:40:14,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:14,378 INFO L933 BasicCegarLoop]: 1433 mSDtfsCounter, 1145 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 766 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 3149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 766 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-17 04:40:14,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1145 Valid, 1516 Invalid, 3149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [766 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-17 04:40:14,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70456 states. [2021-12-17 04:40:14,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70456 to 70455. [2021-12-17 04:40:15,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70455 states, 70454 states have (on average 1.0986601186589833) internal successors, (77405), 70454 states have internal predecessors, (77405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:15,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70455 states to 70455 states and 77405 transitions. [2021-12-17 04:40:15,216 INFO L78 Accepts]: Start accepts. Automaton has 70455 states and 77405 transitions. Word has length 325 [2021-12-17 04:40:15,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:40:15,216 INFO L470 AbstractCegarLoop]: Abstraction has 70455 states and 77405 transitions. [2021-12-17 04:40:15,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:15,217 INFO L276 IsEmpty]: Start isEmpty. Operand 70455 states and 77405 transitions. [2021-12-17 04:40:15,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-12-17 04:40:15,220 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:40:15,220 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:40:15,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 04:40:15,220 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:40:15,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:40:15,221 INFO L85 PathProgramCache]: Analyzing trace with hash 240805553, now seen corresponding path program 1 times [2021-12-17 04:40:15,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:40:15,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753048275] [2021-12-17 04:40:15,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:40:15,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:40:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:40:15,299 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 406 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-17 04:40:15,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:40:15,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753048275] [2021-12-17 04:40:15,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753048275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:40:15,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:40:15,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:40:15,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442597523] [2021-12-17 04:40:15,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:40:15,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:40:15,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:40:15,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:40:15,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:40:15,302 INFO L87 Difference]: Start difference. First operand 70455 states and 77405 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:21,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:40:21,300 INFO L93 Difference]: Finished difference Result 175710 states and 193152 transitions. [2021-12-17 04:40:21,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:40:21,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 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 358 [2021-12-17 04:40:21,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:40:21,529 INFO L225 Difference]: With dead ends: 175710 [2021-12-17 04:40:21,529 INFO L226 Difference]: Without dead ends: 106044 [2021-12-17 04:40:21,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:40:21,553 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 1677 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 6508 mSolverCounterSat, 950 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 7458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 950 IncrementalHoareTripleChecker+Valid, 6508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-17 04:40:21,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1677 Valid, 834 Invalid, 7458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [950 Valid, 6508 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-12-17 04:40:21,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106044 states. [2021-12-17 04:40:22,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106044 to 83845. [2021-12-17 04:40:22,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83845 states, 83844 states have (on average 1.09070416487763) internal successors, (91449), 83844 states have internal predecessors, (91449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:22,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83845 states to 83845 states and 91449 transitions. [2021-12-17 04:40:22,428 INFO L78 Accepts]: Start accepts. Automaton has 83845 states and 91449 transitions. Word has length 358 [2021-12-17 04:40:22,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:40:22,428 INFO L470 AbstractCegarLoop]: Abstraction has 83845 states and 91449 transitions. [2021-12-17 04:40:22,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:22,429 INFO L276 IsEmpty]: Start isEmpty. Operand 83845 states and 91449 transitions. [2021-12-17 04:40:22,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2021-12-17 04:40:22,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:40:22,432 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:40:22,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 04:40:22,433 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:40:22,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:40:22,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1615939699, now seen corresponding path program 1 times [2021-12-17 04:40:22,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:40:22,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516543012] [2021-12-17 04:40:22,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:40:22,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:40:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:40:22,724 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-12-17 04:40:22,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:40:22,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516543012] [2021-12-17 04:40:22,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516543012] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:40:22,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:40:22,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:40:22,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092178161] [2021-12-17 04:40:22,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:40:22,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:40:22,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:40:22,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:40:22,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:22,727 INFO L87 Difference]: Start difference. First operand 83845 states and 91449 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:26,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:40:26,019 INFO L93 Difference]: Finished difference Result 188151 states and 206077 transitions. [2021-12-17 04:40:26,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:40:26,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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 371 [2021-12-17 04:40:26,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:40:26,161 INFO L225 Difference]: With dead ends: 188151 [2021-12-17 04:40:26,161 INFO L226 Difference]: Without dead ends: 105095 [2021-12-17 04:40:26,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:26,212 INFO L933 BasicCegarLoop]: 773 mSDtfsCounter, 802 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2408 mSolverCounterSat, 891 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 891 IncrementalHoareTripleChecker+Valid, 2408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-17 04:40:26,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [802 Valid, 855 Invalid, 3299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [891 Valid, 2408 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-17 04:40:26,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105095 states. [2021-12-17 04:40:27,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105095 to 103509. [2021-12-17 04:40:27,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103509 states, 103508 states have (on average 1.084679445067048) internal successors, (112273), 103508 states have internal predecessors, (112273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:27,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103509 states to 103509 states and 112273 transitions. [2021-12-17 04:40:27,352 INFO L78 Accepts]: Start accepts. Automaton has 103509 states and 112273 transitions. Word has length 371 [2021-12-17 04:40:27,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:40:27,352 INFO L470 AbstractCegarLoop]: Abstraction has 103509 states and 112273 transitions. [2021-12-17 04:40:27,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:27,353 INFO L276 IsEmpty]: Start isEmpty. Operand 103509 states and 112273 transitions. [2021-12-17 04:40:27,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2021-12-17 04:40:27,363 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:40:27,363 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:40:27,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 04:40:27,364 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:40:27,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:40:27,364 INFO L85 PathProgramCache]: Analyzing trace with hash -459150642, now seen corresponding path program 1 times [2021-12-17 04:40:27,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:40:27,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444040158] [2021-12-17 04:40:27,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:40:27,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:40:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:40:27,730 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-12-17 04:40:27,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:40:27,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444040158] [2021-12-17 04:40:27,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444040158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:40:27,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:40:27,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:40:27,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131114789] [2021-12-17 04:40:27,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:40:27,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:40:27,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:40:27,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:40:27,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:27,733 INFO L87 Difference]: Start difference. First operand 103509 states and 112273 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:31,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:40:31,206 INFO L93 Difference]: Finished difference Result 224329 states and 244409 transitions. [2021-12-17 04:40:31,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:40:31,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 477 [2021-12-17 04:40:31,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:40:31,355 INFO L225 Difference]: With dead ends: 224329 [2021-12-17 04:40:31,355 INFO L226 Difference]: Without dead ends: 120035 [2021-12-17 04:40:31,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:31,390 INFO L933 BasicCegarLoop]: 1694 mSDtfsCounter, 849 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 3150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 670 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-17 04:40:31,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [849 Valid, 1829 Invalid, 3150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [670 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-17 04:40:31,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120035 states. [2021-12-17 04:40:32,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120035 to 120022. [2021-12-17 04:40:32,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120022 states, 120021 states have (on average 1.0723206772148208) internal successors, (128701), 120021 states have internal predecessors, (128701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:32,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120022 states to 120022 states and 128701 transitions. [2021-12-17 04:40:32,947 INFO L78 Accepts]: Start accepts. Automaton has 120022 states and 128701 transitions. Word has length 477 [2021-12-17 04:40:32,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:40:32,948 INFO L470 AbstractCegarLoop]: Abstraction has 120022 states and 128701 transitions. [2021-12-17 04:40:32,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:32,948 INFO L276 IsEmpty]: Start isEmpty. Operand 120022 states and 128701 transitions. [2021-12-17 04:40:32,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2021-12-17 04:40:32,968 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:40:32,968 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:40:32,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 04:40:32,969 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:40:32,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:40:32,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1561614142, now seen corresponding path program 1 times [2021-12-17 04:40:32,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:40:32,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101703144] [2021-12-17 04:40:32,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:40:32,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:40:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:40:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 256 proven. 110 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-17 04:40:33,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:40:33,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101703144] [2021-12-17 04:40:33,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101703144] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:40:33,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334103284] [2021-12-17 04:40:33,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:40:33,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:40:33,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:40:33,176 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 04:40:33,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 04:40:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:40:33,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 04:40:33,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:40:34,577 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-12-17 04:40:34,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 04:40:34,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334103284] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:40:34,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 04:40:34,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-17 04:40:34,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394332770] [2021-12-17 04:40:34,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:40:34,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:40:34,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:40:34,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:40:34,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:40:34,580 INFO L87 Difference]: Start difference. First operand 120022 states and 128701 transitions. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 2 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:37,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:40:37,396 INFO L93 Difference]: Finished difference Result 243991 states and 261499 transitions. [2021-12-17 04:40:37,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:40:37,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 2 states have internal predecessors, (474), 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 593 [2021-12-17 04:40:37,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:40:37,549 INFO L225 Difference]: With dead ends: 243991 [2021-12-17 04:40:37,549 INFO L226 Difference]: Without dead ends: 123181 [2021-12-17 04:40:37,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 592 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:40:37,616 INFO L933 BasicCegarLoop]: 980 mSDtfsCounter, 680 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 2527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-17 04:40:37,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 1109 Invalid, 2527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-17 04:40:37,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123181 states. [2021-12-17 04:40:38,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123181 to 123171. [2021-12-17 04:40:39,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123171 states, 123170 states have (on average 1.0649427620362102) internal successors, (131169), 123170 states have internal predecessors, (131169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:39,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123171 states to 123171 states and 131169 transitions. [2021-12-17 04:40:39,313 INFO L78 Accepts]: Start accepts. Automaton has 123171 states and 131169 transitions. Word has length 593 [2021-12-17 04:40:39,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:40:39,313 INFO L470 AbstractCegarLoop]: Abstraction has 123171 states and 131169 transitions. [2021-12-17 04:40:39,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 2 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:39,314 INFO L276 IsEmpty]: Start isEmpty. Operand 123171 states and 131169 transitions. [2021-12-17 04:40:39,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2021-12-17 04:40:39,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:40:39,334 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:40:39,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-17 04:40:39,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-17 04:40:39,535 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:40:39,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:40:39,544 INFO L85 PathProgramCache]: Analyzing trace with hash -698546600, now seen corresponding path program 1 times [2021-12-17 04:40:39,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:40:39,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604922545] [2021-12-17 04:40:39,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:40:39,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:40:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:40:39,657 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 743 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-12-17 04:40:39,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:40:39,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604922545] [2021-12-17 04:40:39,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604922545] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:40:39,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:40:39,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:40:39,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667257044] [2021-12-17 04:40:39,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:40:39,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:40:39,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:40:39,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:40:39,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:39,661 INFO L87 Difference]: Start difference. First operand 123171 states and 131169 transitions. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:42,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:40:42,708 INFO L93 Difference]: Finished difference Result 243961 states and 259872 transitions. [2021-12-17 04:40:42,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:40:42,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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 635 [2021-12-17 04:40:42,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:40:42,854 INFO L225 Difference]: With dead ends: 243961 [2021-12-17 04:40:42,854 INFO L226 Difference]: Without dead ends: 121579 [2021-12-17 04:40:43,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:43,082 INFO L933 BasicCegarLoop]: 1319 mSDtfsCounter, 917 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 2358 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 2358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-17 04:40:43,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 1392 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 2358 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-17 04:40:43,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121579 states. [2021-12-17 04:40:44,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121579 to 121567. [2021-12-17 04:40:44,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121567 states, 121566 states have (on average 1.0488870243324613) internal successors, (127509), 121566 states have internal predecessors, (127509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:44,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121567 states to 121567 states and 127509 transitions. [2021-12-17 04:40:44,396 INFO L78 Accepts]: Start accepts. Automaton has 121567 states and 127509 transitions. Word has length 635 [2021-12-17 04:40:44,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:40:44,396 INFO L470 AbstractCegarLoop]: Abstraction has 121567 states and 127509 transitions. [2021-12-17 04:40:44,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:44,397 INFO L276 IsEmpty]: Start isEmpty. Operand 121567 states and 127509 transitions. [2021-12-17 04:40:44,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2021-12-17 04:40:44,418 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:40:44,419 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:40:44,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 04:40:44,419 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:40:44,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:40:44,419 INFO L85 PathProgramCache]: Analyzing trace with hash -714686914, now seen corresponding path program 1 times [2021-12-17 04:40:44,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:40:44,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616934068] [2021-12-17 04:40:44,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:40:44,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:40:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:40:44,808 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 505 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-17 04:40:44,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:40:44,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616934068] [2021-12-17 04:40:44,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616934068] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:40:44,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:40:44,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:40:44,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133255162] [2021-12-17 04:40:44,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:40:44,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:40:44,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:40:44,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:40:44,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:44,811 INFO L87 Difference]: Start difference. First operand 121567 states and 127509 transitions. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:47,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:40:47,672 INFO L93 Difference]: Finished difference Result 243936 states and 255831 transitions. [2021-12-17 04:40:47,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:40:47,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 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 653 [2021-12-17 04:40:47,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:40:47,804 INFO L225 Difference]: With dead ends: 243936 [2021-12-17 04:40:47,805 INFO L226 Difference]: Without dead ends: 121579 [2021-12-17 04:40:47,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:47,847 INFO L933 BasicCegarLoop]: 1588 mSDtfsCounter, 773 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 2408 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 2572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-17 04:40:47,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 1714 Invalid, 2572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2408 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-17 04:40:47,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121579 states. [2021-12-17 04:40:49,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121579 to 121563. [2021-12-17 04:40:49,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121563 states, 121562 states have (on average 1.0454418321514947) internal successors, (127086), 121562 states have internal predecessors, (127086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:49,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121563 states to 121563 states and 127086 transitions. [2021-12-17 04:40:49,214 INFO L78 Accepts]: Start accepts. Automaton has 121563 states and 127086 transitions. Word has length 653 [2021-12-17 04:40:49,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:40:49,214 INFO L470 AbstractCegarLoop]: Abstraction has 121563 states and 127086 transitions. [2021-12-17 04:40:49,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:49,214 INFO L276 IsEmpty]: Start isEmpty. Operand 121563 states and 127086 transitions. [2021-12-17 04:40:49,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2021-12-17 04:40:49,232 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:40:49,232 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:40:49,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 04:40:49,233 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:40:49,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:40:49,233 INFO L85 PathProgramCache]: Analyzing trace with hash 521450405, now seen corresponding path program 1 times [2021-12-17 04:40:49,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:40:49,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284721375] [2021-12-17 04:40:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:40:49,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:40:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:40:49,374 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 441 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2021-12-17 04:40:49,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:40:49,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284721375] [2021-12-17 04:40:49,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284721375] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:40:49,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:40:49,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:40:49,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372123730] [2021-12-17 04:40:49,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:40:49,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:40:49,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:40:49,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:40:49,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:49,376 INFO L87 Difference]: Start difference. First operand 121563 states and 127086 transitions. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 2 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:51,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:40:51,412 INFO L93 Difference]: Finished difference Result 241535 states and 252486 transitions. [2021-12-17 04:40:51,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:40:51,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 2 states have internal predecessors, (404), 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 676 [2021-12-17 04:40:51,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:40:51,547 INFO L225 Difference]: With dead ends: 241535 [2021-12-17 04:40:51,547 INFO L226 Difference]: Without dead ends: 120761 [2021-12-17 04:40:51,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:51,601 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 1538 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 04:40:51,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 258 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 04:40:51,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120761 states. [2021-12-17 04:40:52,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120761 to 120760. [2021-12-17 04:40:52,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120760 states, 120759 states have (on average 1.044849659238649) internal successors, (126175), 120759 states have internal predecessors, (126175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:53,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120760 states to 120760 states and 126175 transitions. [2021-12-17 04:40:53,031 INFO L78 Accepts]: Start accepts. Automaton has 120760 states and 126175 transitions. Word has length 676 [2021-12-17 04:40:53,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:40:53,032 INFO L470 AbstractCegarLoop]: Abstraction has 120760 states and 126175 transitions. [2021-12-17 04:40:53,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 2 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:53,032 INFO L276 IsEmpty]: Start isEmpty. Operand 120760 states and 126175 transitions. [2021-12-17 04:40:53,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2021-12-17 04:40:53,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:40:53,048 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:40:53,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 04:40:53,049 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:40:53,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:40:53,049 INFO L85 PathProgramCache]: Analyzing trace with hash -464308242, now seen corresponding path program 1 times [2021-12-17 04:40:53,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:40:53,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120788617] [2021-12-17 04:40:53,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:40:53,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:40:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:40:53,203 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 456 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2021-12-17 04:40:53,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:40:53,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120788617] [2021-12-17 04:40:53,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120788617] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:40:53,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:40:53,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:40:53,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566277699] [2021-12-17 04:40:53,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:40:53,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:40:53,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:40:53,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:40:53,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:53,206 INFO L87 Difference]: Start difference. First operand 120760 states and 126175 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:56,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:40:56,330 INFO L93 Difference]: Finished difference Result 240736 states and 251564 transitions. [2021-12-17 04:40:56,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:40:56,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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 681 [2021-12-17 04:40:56,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:40:56,488 INFO L225 Difference]: With dead ends: 240736 [2021-12-17 04:40:56,488 INFO L226 Difference]: Without dead ends: 120765 [2021-12-17 04:40:56,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:56,561 INFO L933 BasicCegarLoop]: 1592 mSDtfsCounter, 616 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 2717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-17 04:40:56,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 1709 Invalid, 2717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 2347 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-17 04:40:56,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120765 states. [2021-12-17 04:40:57,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120765 to 120758. [2021-12-17 04:40:57,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120758 states, 120757 states have (on average 1.0363954056493618) internal successors, (125152), 120757 states have internal predecessors, (125152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:58,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120758 states to 120758 states and 125152 transitions. [2021-12-17 04:40:58,096 INFO L78 Accepts]: Start accepts. Automaton has 120758 states and 125152 transitions. Word has length 681 [2021-12-17 04:40:58,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:40:58,096 INFO L470 AbstractCegarLoop]: Abstraction has 120758 states and 125152 transitions. [2021-12-17 04:40:58,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:40:58,096 INFO L276 IsEmpty]: Start isEmpty. Operand 120758 states and 125152 transitions. [2021-12-17 04:40:58,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2021-12-17 04:40:58,118 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:40:58,120 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:40:58,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 04:40:58,120 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:40:58,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:40:58,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2070978386, now seen corresponding path program 1 times [2021-12-17 04:40:58,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:40:58,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577703793] [2021-12-17 04:40:58,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:40:58,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:40:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:40:58,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 465 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2021-12-17 04:40:58,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:40:58,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577703793] [2021-12-17 04:40:58,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577703793] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:40:58,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:40:58,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:40:58,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152770203] [2021-12-17 04:40:58,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:40:58,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:40:58,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:40:58,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:40:58,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:40:58,320 INFO L87 Difference]: Start difference. First operand 120758 states and 125152 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:41:01,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:41:01,598 INFO L93 Difference]: Finished difference Result 260460 states and 269959 transitions. [2021-12-17 04:41:01,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:41:01,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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 690 [2021-12-17 04:41:01,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:41:01,771 INFO L225 Difference]: With dead ends: 260460 [2021-12-17 04:41:01,772 INFO L226 Difference]: Without dead ends: 140491 [2021-12-17 04:41:01,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:41:01,837 INFO L933 BasicCegarLoop]: 1453 mSDtfsCounter, 645 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 2690 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 2690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-17 04:41:01,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [645 Valid, 1550 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 2690 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-17 04:41:01,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140491 states. [2021-12-17 04:41:03,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140491 to 130214. [2021-12-17 04:41:03,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130214 states, 130213 states have (on average 1.0360102293933786) internal successors, (134902), 130213 states have internal predecessors, (134902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:41:03,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130214 states to 130214 states and 134902 transitions. [2021-12-17 04:41:03,621 INFO L78 Accepts]: Start accepts. Automaton has 130214 states and 134902 transitions. Word has length 690 [2021-12-17 04:41:03,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:41:03,622 INFO L470 AbstractCegarLoop]: Abstraction has 130214 states and 134902 transitions. [2021-12-17 04:41:03,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:41:03,622 INFO L276 IsEmpty]: Start isEmpty. Operand 130214 states and 134902 transitions. [2021-12-17 04:41:03,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2021-12-17 04:41:03,642 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:41:03,643 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:41:03,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 04:41:03,643 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:41:03,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:41:03,643 INFO L85 PathProgramCache]: Analyzing trace with hash 987578991, now seen corresponding path program 1 times [2021-12-17 04:41:03,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:41:03,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935345232] [2021-12-17 04:41:03,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:41:03,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:41:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:41:03,775 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 729 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-17 04:41:03,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:41:03,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935345232] [2021-12-17 04:41:03,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935345232] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:41:03,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:41:03,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:41:03,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817653457] [2021-12-17 04:41:03,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:41:03,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:41:03,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:41:03,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:41:03,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:41:03,778 INFO L87 Difference]: Start difference. First operand 130214 states and 134902 transitions. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:41:07,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:41:07,487 INFO L93 Difference]: Finished difference Result 309331 states and 320718 transitions. [2021-12-17 04:41:07,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:41:07,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 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 740 [2021-12-17 04:41:07,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:41:07,704 INFO L225 Difference]: With dead ends: 309331 [2021-12-17 04:41:07,704 INFO L226 Difference]: Without dead ends: 179906 [2021-12-17 04:41:07,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:41:07,784 INFO L933 BasicCegarLoop]: 677 mSDtfsCounter, 809 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2817 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 2817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-17 04:41:07,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 773 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 2817 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-17 04:41:07,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179906 states.