./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.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 351e3bc8fe69313dfbfbeaf7f37de5791a1bf381bb5ef0945347e83cb39fb485 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:29:18,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:29:18,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:29:18,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:29:18,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:29:18,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:29:18,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:29:18,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:29:18,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:29:18,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:29:18,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:29:18,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:29:18,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:29:18,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:29:18,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:29:18,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:29:18,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:29:18,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:29:18,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:29:18,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:29:18,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:29:18,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:29:18,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:29:18,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:29:18,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:29:18,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:29:18,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:29:18,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:29:18,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:29:18,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:29:18,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:29:18,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:29:18,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:29:18,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:29:18,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:29:18,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:29:18,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:29:18,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:29:18,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:29:18,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:29:18,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:29:18,637 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:29:18,651 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:29:18,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:29:18,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:29:18,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:29:18,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:29:18,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:29:18,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:29:18,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:29:18,654 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:29:18,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:29:18,654 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:29:18,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:29:18,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:29:18,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:29:18,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:29:18,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:29:18,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:29:18,656 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:29:18,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:29:18,656 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:29:18,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:29:18,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:29:18,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:29:18,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:29:18,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:29:18,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:29:18,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:29:18,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:29:18,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:29:18,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:29:18,658 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:29:18,658 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:29:18,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:29:18,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:29:18,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 351e3bc8fe69313dfbfbeaf7f37de5791a1bf381bb5ef0945347e83cb39fb485 [2021-12-16 01:29:18,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:29:18,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:29:18,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:29:18,853 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:29:18,854 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:29:18,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2021-12-16 01:29:18,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d4675d2b/8a18eddd43b44c508c01a45a102e9417/FLAG50d401247 [2021-12-16 01:29:19,295 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:29:19,295 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2021-12-16 01:29:19,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d4675d2b/8a18eddd43b44c508c01a45a102e9417/FLAG50d401247 [2021-12-16 01:29:19,312 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d4675d2b/8a18eddd43b44c508c01a45a102e9417 [2021-12-16 01:29:19,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:29:19,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:29:19,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:29:19,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:29:19,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:29:19,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:29:19" (1/1) ... [2021-12-16 01:29:19,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2771ecd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:29:19, skipping insertion in model container [2021-12-16 01:29:19,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:29:19" (1/1) ... [2021-12-16 01:29:19,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:29:19,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:29:19,640 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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[11101,11114] [2021-12-16 01:29:19,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:29:19,698 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:29:19,746 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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[11101,11114] [2021-12-16 01:29:19,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:29:19,785 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:29:19,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:29:19 WrapperNode [2021-12-16 01:29:19,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:29:19,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:29:19,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:29:19,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:29:19,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:29:19" (1/1) ... [2021-12-16 01:29:19,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:29:19" (1/1) ... [2021-12-16 01:29:19,829 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1107 [2021-12-16 01:29:19,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:29:19,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:29:19,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:29:19,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:29:19,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:29:19" (1/1) ... [2021-12-16 01:29:19,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:29:19" (1/1) ... [2021-12-16 01:29:19,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:29:19" (1/1) ... [2021-12-16 01:29:19,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:29:19" (1/1) ... [2021-12-16 01:29:19,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:29:19" (1/1) ... [2021-12-16 01:29:19,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:29:19" (1/1) ... [2021-12-16 01:29:19,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:29:19" (1/1) ... [2021-12-16 01:29:19,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:29:19,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:29:19,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:29:19,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:29:19,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:29:19" (1/1) ... [2021-12-16 01:29:19,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:29:19,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:29:19,939 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) [2021-12-16 01:29:19,941 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 [2021-12-16 01:29:19,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:29:19,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:29:19,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:29:19,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:29:20,104 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:29:20,113 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:29:20,730 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:29:20,740 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:29:20,740 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 01:29:20,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:29:20 BoogieIcfgContainer [2021-12-16 01:29:20,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:29:20,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:29:20,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:29:20,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:29:20,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:29:19" (1/3) ... [2021-12-16 01:29:20,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6978a862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:29:20, skipping insertion in model container [2021-12-16 01:29:20,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:29:19" (2/3) ... [2021-12-16 01:29:20,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6978a862 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:29:20, skipping insertion in model container [2021-12-16 01:29:20,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:29:20" (3/3) ... [2021-12-16 01:29:20,758 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2021-12-16 01:29:20,763 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:29:20,763 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 01:29:20,828 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:29:20,839 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 [2021-12-16 01:29:20,839 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 01:29:20,865 INFO L276 IsEmpty]: Start isEmpty. Operand has 330 states, 328 states have (on average 1.6524390243902438) internal successors, (542), 329 states have internal predecessors, (542), 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) [2021-12-16 01:29:20,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-16 01:29:20,889 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:29:20,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:29:20,891 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:29:20,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:29:20,897 INFO L85 PathProgramCache]: Analyzing trace with hash 498035691, now seen corresponding path program 1 times [2021-12-16 01:29:20,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:29:20,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169484344] [2021-12-16 01:29:20,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:29:20,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:29:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:29:21,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:29:21,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:29:21,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169484344] [2021-12-16 01:29:21,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169484344] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:29:21,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:29:21,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:29:21,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289558482] [2021-12-16 01:29:21,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:29:21,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:29:21,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:29:21,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:29:21,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:29:21,277 INFO L87 Difference]: Start difference. First operand has 330 states, 328 states have (on average 1.6524390243902438) internal successors, (542), 329 states have internal predecessors, (542), 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 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2021-12-16 01:29:21,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:29:21,494 INFO L93 Difference]: Finished difference Result 632 states and 1022 transitions. [2021-12-16 01:29:21,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:29:21,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 79 [2021-12-16 01:29:21,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:29:21,511 INFO L225 Difference]: With dead ends: 632 [2021-12-16 01:29:21,516 INFO L226 Difference]: Without dead ends: 327 [2021-12-16 01:29:21,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:29:21,527 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 163 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:29:21,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 1414 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:29:21,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-12-16 01:29:21,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2021-12-16 01:29:21,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.5368098159509203) internal successors, (501), 326 states have internal predecessors, (501), 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) [2021-12-16 01:29:21,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 501 transitions. [2021-12-16 01:29:21,594 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 501 transitions. Word has length 79 [2021-12-16 01:29:21,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:29:21,594 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 501 transitions. [2021-12-16 01:29:21,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2021-12-16 01:29:21,594 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 501 transitions. [2021-12-16 01:29:21,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-16 01:29:21,600 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:29:21,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:29:21,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 01:29:21,601 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:29:21,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:29:21,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2093359288, now seen corresponding path program 1 times [2021-12-16 01:29:21,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:29:21,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529741596] [2021-12-16 01:29:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:29:21,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:29:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:29:21,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:29:21,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:29:21,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529741596] [2021-12-16 01:29:21,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529741596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:29:21,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:29:21,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:29:21,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830094772] [2021-12-16 01:29:21,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:29:21,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:29:21,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:29:21,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:29:21,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:29:21,727 INFO L87 Difference]: Start difference. First operand 327 states and 501 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-12-16 01:29:21,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:29:21,775 INFO L93 Difference]: Finished difference Result 761 states and 1193 transitions. [2021-12-16 01:29:21,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:29:21,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 110 [2021-12-16 01:29:21,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:29:21,783 INFO L225 Difference]: With dead ends: 761 [2021-12-16 01:29:21,784 INFO L226 Difference]: Without dead ends: 483 [2021-12-16 01:29:21,785 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 [2021-12-16 01:29:21,790 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 304 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:29:21,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 890 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:29:21,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-12-16 01:29:21,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 481. [2021-12-16 01:29:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.5520833333333333) internal successors, (745), 480 states have internal predecessors, (745), 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) [2021-12-16 01:29:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 745 transitions. [2021-12-16 01:29:21,818 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 745 transitions. Word has length 110 [2021-12-16 01:29:21,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:29:21,819 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 745 transitions. [2021-12-16 01:29:21,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-12-16 01:29:21,819 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 745 transitions. [2021-12-16 01:29:21,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-16 01:29:21,822 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:29:21,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:29:21,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 01:29:21,822 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:29:21,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:29:21,823 INFO L85 PathProgramCache]: Analyzing trace with hash -55375790, now seen corresponding path program 1 times [2021-12-16 01:29:21,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:29:21,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094574140] [2021-12-16 01:29:21,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:29:21,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:29:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:29:21,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:29:21,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:29:21,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094574140] [2021-12-16 01:29:21,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094574140] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:29:21,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:29:21,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:29:21,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479946563] [2021-12-16 01:29:21,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:29:21,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:29:21,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:29:21,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:29:21,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:29:21,899 INFO L87 Difference]: Start difference. First operand 481 states and 745 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2021-12-16 01:29:21,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:29:21,933 INFO L93 Difference]: Finished difference Result 1163 states and 1832 transitions. [2021-12-16 01:29:21,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:29:21,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 112 [2021-12-16 01:29:21,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:29:21,936 INFO L225 Difference]: With dead ends: 1163 [2021-12-16 01:29:21,936 INFO L226 Difference]: Without dead ends: 744 [2021-12-16 01:29:21,937 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 [2021-12-16 01:29:21,938 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 289 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:29:21,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 855 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:29:21,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-12-16 01:29:21,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 742. [2021-12-16 01:29:21,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 1.562753036437247) internal successors, (1158), 741 states have internal predecessors, (1158), 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) [2021-12-16 01:29:21,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1158 transitions. [2021-12-16 01:29:21,969 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1158 transitions. Word has length 112 [2021-12-16 01:29:21,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:29:21,970 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 1158 transitions. [2021-12-16 01:29:21,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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) [2021-12-16 01:29:21,970 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1158 transitions. [2021-12-16 01:29:21,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-16 01:29:21,972 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:29:21,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:29:21,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 01:29:21,973 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:29:21,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:29:21,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1569587546, now seen corresponding path program 1 times [2021-12-16 01:29:21,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:29:21,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628729893] [2021-12-16 01:29:21,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:29:21,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:29:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:29:22,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:29:22,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:29:22,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628729893] [2021-12-16 01:29:22,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628729893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:29:22,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:29:22,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:29:22,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875213560] [2021-12-16 01:29:22,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:29:22,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:29:22,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:29:22,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:29:22,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:29:22,025 INFO L87 Difference]: Start difference. First operand 742 states and 1158 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-12-16 01:29:22,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:29:22,064 INFO L93 Difference]: Finished difference Result 1834 states and 2894 transitions. [2021-12-16 01:29:22,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:29:22,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 114 [2021-12-16 01:29:22,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:29:22,069 INFO L225 Difference]: With dead ends: 1834 [2021-12-16 01:29:22,070 INFO L226 Difference]: Without dead ends: 1167 [2021-12-16 01:29:22,071 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 [2021-12-16 01:29:22,079 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 274 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:29:22,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 889 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:29:22,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2021-12-16 01:29:22,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1165. [2021-12-16 01:29:22,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 1164 states have (on average 1.5670103092783505) internal successors, (1824), 1164 states have internal predecessors, (1824), 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) [2021-12-16 01:29:22,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1824 transitions. [2021-12-16 01:29:22,139 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1824 transitions. Word has length 114 [2021-12-16 01:29:22,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:29:22,141 INFO L470 AbstractCegarLoop]: Abstraction has 1165 states and 1824 transitions. [2021-12-16 01:29:22,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-12-16 01:29:22,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1824 transitions. [2021-12-16 01:29:22,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-16 01:29:22,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:29:22,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:29:22,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 01:29:22,148 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:29:22,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:29:22,150 INFO L85 PathProgramCache]: Analyzing trace with hash -598144290, now seen corresponding path program 1 times [2021-12-16 01:29:22,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:29:22,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153868945] [2021-12-16 01:29:22,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:29:22,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:29:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:29:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:29:22,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:29:22,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153868945] [2021-12-16 01:29:22,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153868945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:29:22,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:29:22,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:29:22,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268124579] [2021-12-16 01:29:22,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:29:22,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:29:22,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:29:22,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:29:22,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:29:22,208 INFO L87 Difference]: Start difference. First operand 1165 states and 1824 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:29:22,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:29:22,263 INFO L93 Difference]: Finished difference Result 2887 states and 4547 transitions. [2021-12-16 01:29:22,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:29:22,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-12-16 01:29:22,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:29:22,270 INFO L225 Difference]: With dead ends: 2887 [2021-12-16 01:29:22,270 INFO L226 Difference]: Without dead ends: 1810 [2021-12-16 01:29:22,272 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 [2021-12-16 01:29:22,275 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 259 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:29:22,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 785 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:29:22,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2021-12-16 01:29:22,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1808. [2021-12-16 01:29:22,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1808 states, 1807 states have (on average 1.563918096292197) internal successors, (2826), 1807 states have internal predecessors, (2826), 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) [2021-12-16 01:29:22,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2826 transitions. [2021-12-16 01:29:22,327 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2826 transitions. Word has length 116 [2021-12-16 01:29:22,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:29:22,328 INFO L470 AbstractCegarLoop]: Abstraction has 1808 states and 2826 transitions. [2021-12-16 01:29:22,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:29:22,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2826 transitions. [2021-12-16 01:29:22,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-16 01:29:22,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:29:22,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:29:22,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 01:29:22,334 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:29:22,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:29:22,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1082431554, now seen corresponding path program 1 times [2021-12-16 01:29:22,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:29:22,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905355510] [2021-12-16 01:29:22,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:29:22,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:29:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:29:22,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:29:22,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:29:22,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905355510] [2021-12-16 01:29:22,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905355510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:29:22,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:29:22,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:29:22,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962117295] [2021-12-16 01:29:22,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:29:22,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:29:22,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:29:22,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:29:22,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:29:22,415 INFO L87 Difference]: Start difference. First operand 1808 states and 2826 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2021-12-16 01:29:22,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:29:22,487 INFO L93 Difference]: Finished difference Result 4392 states and 6872 transitions. [2021-12-16 01:29:22,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:29:22,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 118 [2021-12-16 01:29:22,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:29:22,496 INFO L225 Difference]: With dead ends: 4392 [2021-12-16 01:29:22,496 INFO L226 Difference]: Without dead ends: 2685 [2021-12-16 01:29:22,499 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 [2021-12-16 01:29:22,501 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 244 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:29:22,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 750 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:29:22,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2021-12-16 01:29:22,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 2683. [2021-12-16 01:29:22,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2683 states, 2682 states have (on average 1.5510812826249067) internal successors, (4160), 2682 states have internal predecessors, (4160), 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) [2021-12-16 01:29:22,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2683 states to 2683 states and 4160 transitions. [2021-12-16 01:29:22,627 INFO L78 Accepts]: Start accepts. Automaton has 2683 states and 4160 transitions. Word has length 118 [2021-12-16 01:29:22,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:29:22,627 INFO L470 AbstractCegarLoop]: Abstraction has 2683 states and 4160 transitions. [2021-12-16 01:29:22,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2021-12-16 01:29:22,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2683 states and 4160 transitions. [2021-12-16 01:29:22,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-16 01:29:22,632 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:29:22,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:29:22,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 01:29:22,633 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:29:22,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:29:22,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1267336044, now seen corresponding path program 1 times [2021-12-16 01:29:22,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:29:22,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261211110] [2021-12-16 01:29:22,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:29:22,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:29:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:29:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:29:22,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:29:22,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261211110] [2021-12-16 01:29:22,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261211110] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:29:22,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:29:22,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:29:22,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007325226] [2021-12-16 01:29:22,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:29:22,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:29:22,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:29:22,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:29:22,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:29:22,702 INFO L87 Difference]: Start difference. First operand 2683 states and 4160 transitions. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2021-12-16 01:29:23,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:29:23,184 INFO L93 Difference]: Finished difference Result 15784 states and 24519 transitions. [2021-12-16 01:29:23,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:29:23,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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 120 [2021-12-16 01:29:23,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:29:23,228 INFO L225 Difference]: With dead ends: 15784 [2021-12-16 01:29:23,228 INFO L226 Difference]: Without dead ends: 13206 [2021-12-16 01:29:23,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:29:23,239 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 3063 mSDsluCounter, 2659 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3063 SdHoareTripleChecker+Valid, 3100 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:29:23,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3063 Valid, 3100 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:29:23,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13206 states. [2021-12-16 01:29:23,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13206 to 5166. [2021-12-16 01:29:23,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5166 states, 5165 states have (on average 1.5295256534365924) internal successors, (7900), 5165 states have internal predecessors, (7900), 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) [2021-12-16 01:29:23,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5166 states to 5166 states and 7900 transitions. [2021-12-16 01:29:23,587 INFO L78 Accepts]: Start accepts. Automaton has 5166 states and 7900 transitions. Word has length 120 [2021-12-16 01:29:23,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:29:23,588 INFO L470 AbstractCegarLoop]: Abstraction has 5166 states and 7900 transitions. [2021-12-16 01:29:23,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2021-12-16 01:29:23,589 INFO L276 IsEmpty]: Start isEmpty. Operand 5166 states and 7900 transitions. [2021-12-16 01:29:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 01:29:23,598 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:29:23,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:29:23,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 01:29:23,599 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:29:23,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:29:23,600 INFO L85 PathProgramCache]: Analyzing trace with hash -621228175, now seen corresponding path program 1 times [2021-12-16 01:29:23,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:29:23,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678719349] [2021-12-16 01:29:23,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:29:23,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:29:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:29:23,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:29:23,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:29:23,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678719349] [2021-12-16 01:29:23,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678719349] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:29:23,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:29:23,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:29:23,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400106021] [2021-12-16 01:29:23,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:29:23,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:29:23,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:29:23,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:29:23,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:29:23,726 INFO L87 Difference]: Start difference. First operand 5166 states and 7900 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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) [2021-12-16 01:29:24,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:29:24,751 INFO L93 Difference]: Finished difference Result 26107 states and 39536 transitions. [2021-12-16 01:29:24,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:29:24,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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 123 [2021-12-16 01:29:24,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:29:24,800 INFO L225 Difference]: With dead ends: 26107 [2021-12-16 01:29:24,800 INFO L226 Difference]: Without dead ends: 21036 [2021-12-16 01:29:24,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:29:24,812 INFO L933 BasicCegarLoop]: 1139 mSDtfsCounter, 1870 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:29:24,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1870 Valid, 2475 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:29:24,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21036 states. [2021-12-16 01:29:25,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21036 to 21028. [2021-12-16 01:29:25,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21028 states, 21027 states have (on average 1.504113758500975) internal successors, (31627), 21027 states have internal predecessors, (31627), 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) [2021-12-16 01:29:25,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21028 states to 21028 states and 31627 transitions. [2021-12-16 01:29:25,782 INFO L78 Accepts]: Start accepts. Automaton has 21028 states and 31627 transitions. Word has length 123 [2021-12-16 01:29:25,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:29:25,782 INFO L470 AbstractCegarLoop]: Abstraction has 21028 states and 31627 transitions. [2021-12-16 01:29:25,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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) [2021-12-16 01:29:25,783 INFO L276 IsEmpty]: Start isEmpty. Operand 21028 states and 31627 transitions. [2021-12-16 01:29:25,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-16 01:29:25,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:29:25,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:29:25,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 01:29:25,821 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:29:25,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:29:25,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1699798234, now seen corresponding path program 1 times [2021-12-16 01:29:25,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:29:25,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664514474] [2021-12-16 01:29:25,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:29:25,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:29:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:29:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:29:25,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:29:25,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664514474] [2021-12-16 01:29:25,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664514474] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:29:25,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:29:25,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:29:25,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271583624] [2021-12-16 01:29:25,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:29:25,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:29:25,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:29:25,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:29:25,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:29:25,860 INFO L87 Difference]: Start difference. First operand 21028 states and 31627 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2021-12-16 01:29:27,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:29:27,063 INFO L93 Difference]: Finished difference Result 53370 states and 80175 transitions. [2021-12-16 01:29:27,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:29:27,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 125 [2021-12-16 01:29:27,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:29:27,142 INFO L225 Difference]: With dead ends: 53370 [2021-12-16 01:29:27,142 INFO L226 Difference]: Without dead ends: 36544 [2021-12-16 01:29:27,267 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 [2021-12-16 01:29:27,270 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 349 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:29:27,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 1056 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:29:27,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36544 states. [2021-12-16 01:29:28,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36544 to 36542. [2021-12-16 01:29:28,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36542 states, 36541 states have (on average 1.4911195643250048) internal successors, (54487), 36541 states have internal predecessors, (54487), 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) [2021-12-16 01:29:28,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36542 states to 36542 states and 54487 transitions. [2021-12-16 01:29:28,927 INFO L78 Accepts]: Start accepts. Automaton has 36542 states and 54487 transitions. Word has length 125 [2021-12-16 01:29:28,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:29:28,927 INFO L470 AbstractCegarLoop]: Abstraction has 36542 states and 54487 transitions. [2021-12-16 01:29:28,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2021-12-16 01:29:28,928 INFO L276 IsEmpty]: Start isEmpty. Operand 36542 states and 54487 transitions. [2021-12-16 01:29:29,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-16 01:29:29,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:29:29,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:29:29,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 01:29:29,003 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:29:29,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:29:29,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1357098248, now seen corresponding path program 1 times [2021-12-16 01:29:29,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:29:29,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293961253] [2021-12-16 01:29:29,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:29:29,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:29:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:29:29,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:29:29,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:29:29,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293961253] [2021-12-16 01:29:29,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293961253] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:29:29,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:29:29,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:29:29,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697487112] [2021-12-16 01:29:29,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:29:29,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:29:29,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:29:29,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:29:29,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:29:29,049 INFO L87 Difference]: Start difference. First operand 36542 states and 54487 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2021-12-16 01:29:31,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:29:31,008 INFO L93 Difference]: Finished difference Result 83822 states and 124831 transitions. [2021-12-16 01:29:31,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:29:31,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 125 [2021-12-16 01:29:31,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:29:31,146 INFO L225 Difference]: With dead ends: 83822 [2021-12-16 01:29:31,147 INFO L226 Difference]: Without dead ends: 59225 [2021-12-16 01:29:31,183 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 [2021-12-16 01:29:31,183 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 328 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:29:31,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 1157 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:29:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59225 states. [2021-12-16 01:29:33,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59225 to 59223. [2021-12-16 01:29:33,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59223 states, 59222 states have (on average 1.4779136131842896) internal successors, (87525), 59222 states have internal predecessors, (87525), 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) [2021-12-16 01:29:33,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59223 states to 59223 states and 87525 transitions. [2021-12-16 01:29:33,795 INFO L78 Accepts]: Start accepts. Automaton has 59223 states and 87525 transitions. Word has length 125 [2021-12-16 01:29:33,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:29:33,795 INFO L470 AbstractCegarLoop]: Abstraction has 59223 states and 87525 transitions. [2021-12-16 01:29:33,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2021-12-16 01:29:33,796 INFO L276 IsEmpty]: Start isEmpty. Operand 59223 states and 87525 transitions. [2021-12-16 01:29:33,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-16 01:29:33,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:29:33,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:29:33,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 01:29:33,892 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:29:33,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:29:33,893 INFO L85 PathProgramCache]: Analyzing trace with hash 716954330, now seen corresponding path program 1 times [2021-12-16 01:29:33,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:29:33,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381642799] [2021-12-16 01:29:33,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:29:33,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:29:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:29:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:29:33,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:29:33,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381642799] [2021-12-16 01:29:33,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381642799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:29:33,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:29:33,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:29:33,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721438548] [2021-12-16 01:29:33,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:29:33,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:29:33,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:29:33,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:29:33,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:29:33,953 INFO L87 Difference]: Start difference. First operand 59223 states and 87525 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2021-12-16 01:29:37,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:29:37,022 INFO L93 Difference]: Finished difference Result 120135 states and 177071 transitions. [2021-12-16 01:29:37,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:29:37,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 125 [2021-12-16 01:29:37,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:29:37,228 INFO L225 Difference]: With dead ends: 120135 [2021-12-16 01:29:37,228 INFO L226 Difference]: Without dead ends: 88513 [2021-12-16 01:29:37,292 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 [2021-12-16 01:29:37,292 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 281 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:29:37,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 1149 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:29:37,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88513 states. [2021-12-16 01:29:40,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88513 to 88511. [2021-12-16 01:29:41,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88511 states, 88510 states have (on average 1.462693480962603) internal successors, (129463), 88510 states have internal predecessors, (129463), 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) [2021-12-16 01:29:41,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88511 states to 88511 states and 129463 transitions. [2021-12-16 01:29:41,218 INFO L78 Accepts]: Start accepts. Automaton has 88511 states and 129463 transitions. Word has length 125 [2021-12-16 01:29:41,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:29:41,219 INFO L470 AbstractCegarLoop]: Abstraction has 88511 states and 129463 transitions. [2021-12-16 01:29:41,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2021-12-16 01:29:41,219 INFO L276 IsEmpty]: Start isEmpty. Operand 88511 states and 129463 transitions. [2021-12-16 01:29:41,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-16 01:29:41,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:29:41,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:29:41,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 01:29:41,358 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:29:41,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:29:41,358 INFO L85 PathProgramCache]: Analyzing trace with hash -55854518, now seen corresponding path program 1 times [2021-12-16 01:29:41,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:29:41,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120255968] [2021-12-16 01:29:41,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:29:41,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:29:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:29:41,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:29:41,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:29:41,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120255968] [2021-12-16 01:29:41,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120255968] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:29:41,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:29:41,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:29:41,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742631021] [2021-12-16 01:29:41,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:29:41,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:29:41,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:29:41,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:29:41,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:29:41,409 INFO L87 Difference]: Start difference. First operand 88511 states and 129463 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2021-12-16 01:29:45,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:29:45,271 INFO L93 Difference]: Finished difference Result 146361 states and 212639 transitions. [2021-12-16 01:29:45,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:29:45,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 125 [2021-12-16 01:29:45,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:29:45,495 INFO L225 Difference]: With dead ends: 146361 [2021-12-16 01:29:45,495 INFO L226 Difference]: Without dead ends: 116544 [2021-12-16 01:29:45,548 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 [2021-12-16 01:29:45,549 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 263 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:29:45,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 1130 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:29:45,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116544 states. [2021-12-16 01:29:50,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116544 to 116542. [2021-12-16 01:29:50,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116542 states, 116541 states have (on average 1.4427283102084245) internal successors, (168137), 116541 states have internal predecessors, (168137), 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) [2021-12-16 01:29:51,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116542 states to 116542 states and 168137 transitions. [2021-12-16 01:29:51,181 INFO L78 Accepts]: Start accepts. Automaton has 116542 states and 168137 transitions. Word has length 125 [2021-12-16 01:29:51,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:29:51,182 INFO L470 AbstractCegarLoop]: Abstraction has 116542 states and 168137 transitions. [2021-12-16 01:29:51,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2021-12-16 01:29:51,182 INFO L276 IsEmpty]: Start isEmpty. Operand 116542 states and 168137 transitions. [2021-12-16 01:29:51,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-16 01:29:51,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:29:51,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:29:51,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 01:29:51,616 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:29:51,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:29:51,622 INFO L85 PathProgramCache]: Analyzing trace with hash 2035168963, now seen corresponding path program 1 times [2021-12-16 01:29:51,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:29:51,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025588214] [2021-12-16 01:29:51,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:29:51,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:29:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:29:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:29:51,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:29:51,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025588214] [2021-12-16 01:29:51,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025588214] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:29:51,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:29:51,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:29:51,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935566275] [2021-12-16 01:29:51,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:29:51,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:29:51,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:29:51,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:29:51,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:29:51,697 INFO L87 Difference]: Start difference. First operand 116542 states and 168137 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 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)