./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.11.cil-2.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/combinations/Problem05_label44+token_ring.11.cil-2.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 7c713aa7938ec5ae1ba06a0e41e275f2f1d72befd88a887a14dfcd6cc53c5088 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 18:57:22,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 18:57:22,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 18:57:22,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 18:57:22,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 18:57:22,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 18:57:22,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 18:57:22,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 18:57:22,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 18:57:22,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 18:57:22,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 18:57:22,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 18:57:22,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 18:57:22,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 18:57:22,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 18:57:22,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 18:57:22,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 18:57:22,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 18:57:22,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 18:57:22,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 18:57:22,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 18:57:22,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 18:57:22,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 18:57:22,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 18:57:22,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 18:57:22,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 18:57:22,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 18:57:22,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 18:57:22,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 18:57:22,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 18:57:22,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 18:57:22,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 18:57:22,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 18:57:22,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 18:57:22,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 18:57:22,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 18:57:22,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 18:57:22,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 18:57:22,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 18:57:22,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 18:57:22,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 18:57:22,706 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 18:57:22,736 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 18:57:22,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 18:57:22,738 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 18:57:22,738 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 18:57:22,739 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 18:57:22,739 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 18:57:22,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 18:57:22,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 18:57:22,740 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 18:57:22,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 18:57:22,741 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 18:57:22,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 18:57:22,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 18:57:22,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 18:57:22,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 18:57:22,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 18:57:22,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 18:57:22,743 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 18:57:22,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 18:57:22,743 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 18:57:22,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 18:57:22,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 18:57:22,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 18:57:22,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 18:57:22,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:57:22,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 18:57:22,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 18:57:22,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 18:57:22,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 18:57:22,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 18:57:22,746 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 18:57:22,746 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 18:57:22,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 18:57:22,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 18:57:22,747 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c713aa7938ec5ae1ba06a0e41e275f2f1d72befd88a887a14dfcd6cc53c5088 [2021-12-17 18:57:22,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 18:57:23,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 18:57:23,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 18:57:23,015 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 18:57:23,016 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 18:57:23,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label44+token_ring.11.cil-2.c [2021-12-17 18:57:23,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f74533ac/210b86b7098f4bf490e8ece969e38df1/FLAGd16219756 [2021-12-17 18:57:23,904 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 18:57:23,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.11.cil-2.c [2021-12-17 18:57:23,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f74533ac/210b86b7098f4bf490e8ece969e38df1/FLAGd16219756 [2021-12-17 18:57:24,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f74533ac/210b86b7098f4bf490e8ece969e38df1 [2021-12-17 18:57:24,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 18:57:24,380 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 18:57:24,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 18:57:24,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 18:57:24,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 18:57:24,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:57:24" (1/1) ... [2021-12-17 18:57:24,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c4cf7ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:24, skipping insertion in model container [2021-12-17 18:57:24,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:57:24" (1/1) ... [2021-12-17 18:57:24,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 18:57:24,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 18:57:26,198 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/combinations/Problem05_label44+token_ring.11.cil-2.c[377340,377353] [2021-12-17 18:57:26,232 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/combinations/Problem05_label44+token_ring.11.cil-2.c[383339,383352] [2021-12-17 18:57:26,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:57:26,458 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 18:57:27,182 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/combinations/Problem05_label44+token_ring.11.cil-2.c[377340,377353] [2021-12-17 18:57:27,191 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/combinations/Problem05_label44+token_ring.11.cil-2.c[383339,383352] [2021-12-17 18:57:27,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:57:27,274 INFO L208 MainTranslator]: Completed translation [2021-12-17 18:57:27,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:27 WrapperNode [2021-12-17 18:57:27,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 18:57:27,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 18:57:27,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 18:57:27,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 18:57:27,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:27" (1/1) ... [2021-12-17 18:57:27,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:27" (1/1) ... [2021-12-17 18:57:27,813 INFO L137 Inliner]: procedures = 66, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13141 [2021-12-17 18:57:27,813 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 18:57:27,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 18:57:27,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 18:57:27,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 18:57:27,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:27" (1/1) ... [2021-12-17 18:57:27,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:27" (1/1) ... [2021-12-17 18:57:27,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:27" (1/1) ... [2021-12-17 18:57:27,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:27" (1/1) ... [2021-12-17 18:57:28,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:27" (1/1) ... [2021-12-17 18:57:28,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:27" (1/1) ... [2021-12-17 18:57:28,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:27" (1/1) ... [2021-12-17 18:57:28,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 18:57:28,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 18:57:28,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 18:57:28,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 18:57:28,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:27" (1/1) ... [2021-12-17 18:57:28,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:57:28,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:57:28,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 18:57:28,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 18:57:28,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 18:57:28,583 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-17 18:57:28,584 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-17 18:57:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 18:57:28,587 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 18:57:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-17 18:57:28,587 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-17 18:57:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-17 18:57:28,588 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-17 18:57:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-17 18:57:28,588 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-17 18:57:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-17 18:57:28,588 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-17 18:57:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 18:57:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 18:57:28,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 18:57:28,796 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 18:57:28,813 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 18:57:34,437 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 18:57:34,468 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 18:57:34,468 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-12-17 18:57:34,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:57:34 BoogieIcfgContainer [2021-12-17 18:57:34,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 18:57:34,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 18:57:34,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 18:57:34,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 18:57:34,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 06:57:24" (1/3) ... [2021-12-17 18:57:34,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c42a100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:57:34, skipping insertion in model container [2021-12-17 18:57:34,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:27" (2/3) ... [2021-12-17 18:57:34,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c42a100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:57:34, skipping insertion in model container [2021-12-17 18:57:34,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:57:34" (3/3) ... [2021-12-17 18:57:34,480 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.11.cil-2.c [2021-12-17 18:57:34,485 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 18:57:34,485 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 18:57:34,532 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 18:57:34,537 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 18:57:34,537 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 18:57:34,590 INFO L276 IsEmpty]: Start isEmpty. Operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-17 18:57:34,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-17 18:57:34,606 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:34,607 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:57:34,607 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:34,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:34,611 INFO L85 PathProgramCache]: Analyzing trace with hash -17558896, now seen corresponding path program 1 times [2021-12-17 18:57:34,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:34,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532244922] [2021-12-17 18:57:34,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:34,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:34,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:34,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-17 18:57:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:34,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 18:57:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:35,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 18:57:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:35,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 18:57:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:35,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:35,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:35,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532244922] [2021-12-17 18:57:35,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532244922] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:35,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:35,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 18:57:35,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851088810] [2021-12-17 18:57:35,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:35,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 18:57:35,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:35,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 18:57:35,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 18:57:35,191 INFO L87 Difference]: Start difference. First operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:36,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:36,675 INFO L93 Difference]: Finished difference Result 5199 states and 9547 transitions. [2021-12-17 18:57:36,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:57:36,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-17 18:57:36,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:36,699 INFO L225 Difference]: With dead ends: 5199 [2021-12-17 18:57:36,699 INFO L226 Difference]: Without dead ends: 2604 [2021-12-17 18:57:36,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:57:36,715 INFO L933 BasicCegarLoop]: 4637 mSDtfsCounter, 953 mSDsluCounter, 12458 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 17095 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:36,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 17095 Invalid, 709 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:57:36,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2021-12-17 18:57:36,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2473. [2021-12-17 18:57:36,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2440 states have (on average 1.82827868852459) internal successors, (4461), 2442 states have internal predecessors, (4461), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-17 18:57:36,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4511 transitions. [2021-12-17 18:57:36,855 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4511 transitions. Word has length 167 [2021-12-17 18:57:36,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:36,855 INFO L470 AbstractCegarLoop]: Abstraction has 2473 states and 4511 transitions. [2021-12-17 18:57:36,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:36,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4511 transitions. [2021-12-17 18:57:36,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-17 18:57:36,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:36,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:57:36,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 18:57:36,928 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:36,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:36,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1911892782, now seen corresponding path program 1 times [2021-12-17 18:57:36,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:36,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377793250] [2021-12-17 18:57:36,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:36,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:37,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:37,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-17 18:57:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:37,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 18:57:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:37,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 18:57:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:37,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 18:57:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:37,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:37,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:37,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377793250] [2021-12-17 18:57:37,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377793250] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:37,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:37,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 18:57:37,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619212969] [2021-12-17 18:57:37,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:37,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 18:57:37,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:37,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 18:57:37,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 18:57:37,158 INFO L87 Difference]: Start difference. First operand 2473 states and 4511 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:39,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:39,767 INFO L93 Difference]: Finished difference Result 3417 states and 6038 transitions. [2021-12-17 18:57:39,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 18:57:39,768 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-17 18:57:39,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:39,787 INFO L225 Difference]: With dead ends: 3417 [2021-12-17 18:57:39,788 INFO L226 Difference]: Without dead ends: 3084 [2021-12-17 18:57:39,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:57:39,794 INFO L933 BasicCegarLoop]: 4616 mSDtfsCounter, 5395 mSDsluCounter, 12814 mSDsCounter, 0 mSdLazyCounter, 1810 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5413 SdHoareTripleChecker+Valid, 17430 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:39,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5413 Valid, 17430 Invalid, 1922 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 1810 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-17 18:57:39,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2021-12-17 18:57:39,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 2823. [2021-12-17 18:57:39,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.8009410061527324) internal successors, (4976), 2766 states have internal predecessors, (4976), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2021-12-17 18:57:39,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5069 transitions. [2021-12-17 18:57:39,896 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5069 transitions. Word has length 167 [2021-12-17 18:57:39,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:39,897 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5069 transitions. [2021-12-17 18:57:39,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:39,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5069 transitions. [2021-12-17 18:57:39,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-17 18:57:39,902 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:39,902 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:57:39,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 18:57:39,903 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:39,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:39,904 INFO L85 PathProgramCache]: Analyzing trace with hash -912306602, now seen corresponding path program 1 times [2021-12-17 18:57:39,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:39,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067861619] [2021-12-17 18:57:39,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:39,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:39,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:40,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-17 18:57:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:40,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 18:57:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:40,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 18:57:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:40,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 18:57:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:40,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:40,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067861619] [2021-12-17 18:57:40,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067861619] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:40,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:40,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:57:40,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257366082] [2021-12-17 18:57:40,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:40,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:57:40,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:40,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:57:40,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:57:40,121 INFO L87 Difference]: Start difference. First operand 2823 states and 5069 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:43,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:43,163 INFO L93 Difference]: Finished difference Result 4265 states and 7403 transitions. [2021-12-17 18:57:43,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:57:43,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-17 18:57:43,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:43,180 INFO L225 Difference]: With dead ends: 4265 [2021-12-17 18:57:43,181 INFO L226 Difference]: Without dead ends: 3582 [2021-12-17 18:57:43,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:57:43,192 INFO L933 BasicCegarLoop]: 4895 mSDtfsCounter, 5420 mSDsluCounter, 17640 mSDsCounter, 0 mSdLazyCounter, 2841 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5438 SdHoareTripleChecker+Valid, 22535 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:43,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5438 Valid, 22535 Invalid, 2914 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 2841 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-17 18:57:43,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2021-12-17 18:57:43,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 3148. [2021-12-17 18:57:43,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3148 states, 3061 states have (on average 1.7775236850702385) internal successors, (5441), 3065 states have internal predecessors, (5441), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2021-12-17 18:57:43,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5576 transitions. [2021-12-17 18:57:43,309 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5576 transitions. Word has length 167 [2021-12-17 18:57:43,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:43,310 INFO L470 AbstractCegarLoop]: Abstraction has 3148 states and 5576 transitions. [2021-12-17 18:57:43,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:43,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5576 transitions. [2021-12-17 18:57:43,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-17 18:57:43,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:43,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:57:43,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 18:57:43,313 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:43,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:43,314 INFO L85 PathProgramCache]: Analyzing trace with hash -574019052, now seen corresponding path program 1 times [2021-12-17 18:57:43,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:43,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036036400] [2021-12-17 18:57:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:43,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:43,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:43,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-17 18:57:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:43,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 18:57:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:43,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 18:57:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:43,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 18:57:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:43,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:43,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:43,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036036400] [2021-12-17 18:57:43,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036036400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:43,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:43,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:57:43,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805058539] [2021-12-17 18:57:43,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:43,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:57:43,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:43,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:57:43,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:57:43,461 INFO L87 Difference]: Start difference. First operand 3148 states and 5576 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:46,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:46,615 INFO L93 Difference]: Finished difference Result 5515 states and 9398 transitions. [2021-12-17 18:57:46,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:57:46,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-17 18:57:46,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:46,638 INFO L225 Difference]: With dead ends: 5515 [2021-12-17 18:57:46,638 INFO L226 Difference]: Without dead ends: 4507 [2021-12-17 18:57:46,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:57:46,651 INFO L933 BasicCegarLoop]: 4887 mSDtfsCounter, 5417 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2847 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5435 SdHoareTripleChecker+Valid, 22523 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:46,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5435 Valid, 22523 Invalid, 2923 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2847 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-17 18:57:46,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4507 states. [2021-12-17 18:57:46,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4507 to 3799. [2021-12-17 18:57:46,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3799 states, 3658 states have (on average 1.7419354838709677) internal successors, (6372), 3664 states have internal predecessors, (6372), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2021-12-17 18:57:46,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3799 states to 3799 states and 6595 transitions. [2021-12-17 18:57:46,836 INFO L78 Accepts]: Start accepts. Automaton has 3799 states and 6595 transitions. Word has length 167 [2021-12-17 18:57:46,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:46,837 INFO L470 AbstractCegarLoop]: Abstraction has 3799 states and 6595 transitions. [2021-12-17 18:57:46,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:46,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3799 states and 6595 transitions. [2021-12-17 18:57:46,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-17 18:57:46,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:46,845 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:57:46,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 18:57:46,846 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:46,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:46,846 INFO L85 PathProgramCache]: Analyzing trace with hash -147464554, now seen corresponding path program 1 times [2021-12-17 18:57:46,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:46,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210905185] [2021-12-17 18:57:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:46,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:46,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:46,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-17 18:57:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:46,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 18:57:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:46,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 18:57:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:46,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 18:57:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:46,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:46,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:46,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210905185] [2021-12-17 18:57:46,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210905185] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:46,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:46,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:57:46,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015426000] [2021-12-17 18:57:46,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:46,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:57:46,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:46,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:57:46,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:57:46,992 INFO L87 Difference]: Start difference. First operand 3799 states and 6595 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:50,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:50,059 INFO L93 Difference]: Finished difference Result 7918 states and 13209 transitions. [2021-12-17 18:57:50,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:57:50,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-17 18:57:50,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:50,088 INFO L225 Difference]: With dead ends: 7918 [2021-12-17 18:57:50,088 INFO L226 Difference]: Without dead ends: 6259 [2021-12-17 18:57:50,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:57:50,093 INFO L933 BasicCegarLoop]: 4883 mSDtfsCounter, 5413 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2842 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5431 SdHoareTripleChecker+Valid, 22519 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:50,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5431 Valid, 22519 Invalid, 2918 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2842 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-17 18:57:50,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6259 states. [2021-12-17 18:57:50,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6259 to 5102. [2021-12-17 18:57:50,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5102 states, 4853 states have (on average 1.6966824644549763) internal successors, (8234), 4863 states have internal predecessors, (8234), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2021-12-17 18:57:50,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5102 states to 5102 states and 8639 transitions. [2021-12-17 18:57:50,286 INFO L78 Accepts]: Start accepts. Automaton has 5102 states and 8639 transitions. Word has length 167 [2021-12-17 18:57:50,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:50,286 INFO L470 AbstractCegarLoop]: Abstraction has 5102 states and 8639 transitions. [2021-12-17 18:57:50,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:50,287 INFO L276 IsEmpty]: Start isEmpty. Operand 5102 states and 8639 transitions. [2021-12-17 18:57:50,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-17 18:57:50,290 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:50,290 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:57:50,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 18:57:50,290 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:50,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:50,291 INFO L85 PathProgramCache]: Analyzing trace with hash -687894060, now seen corresponding path program 1 times [2021-12-17 18:57:50,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:50,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912118392] [2021-12-17 18:57:50,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:50,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:50,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:50,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-17 18:57:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:50,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 18:57:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:50,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 18:57:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:50,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 18:57:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:50,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:50,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:50,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912118392] [2021-12-17 18:57:50,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912118392] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:50,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:50,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:57:50,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647222887] [2021-12-17 18:57:50,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:50,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:57:50,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:50,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:57:50,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:57:50,450 INFO L87 Difference]: Start difference. First operand 5102 states and 8639 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:53,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:53,346 INFO L93 Difference]: Finished difference Result 12723 states and 20847 transitions. [2021-12-17 18:57:53,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:57:53,347 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-17 18:57:53,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:53,392 INFO L225 Difference]: With dead ends: 12723 [2021-12-17 18:57:53,392 INFO L226 Difference]: Without dead ends: 9761 [2021-12-17 18:57:53,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:57:53,408 INFO L933 BasicCegarLoop]: 4879 mSDtfsCounter, 5409 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2837 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5427 SdHoareTripleChecker+Valid, 22515 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:53,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5427 Valid, 22515 Invalid, 2913 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2837 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-17 18:57:53,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9761 states. [2021-12-17 18:57:53,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9761 to 7713. [2021-12-17 18:57:53,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7713 states, 7248 states have (on average 1.650662251655629) internal successors, (11964), 7266 states have internal predecessors, (11964), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2021-12-17 18:57:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7713 states to 7713 states and 12751 transitions. [2021-12-17 18:57:53,900 INFO L78 Accepts]: Start accepts. Automaton has 7713 states and 12751 transitions. Word has length 167 [2021-12-17 18:57:53,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:53,901 INFO L470 AbstractCegarLoop]: Abstraction has 7713 states and 12751 transitions. [2021-12-17 18:57:53,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:53,901 INFO L276 IsEmpty]: Start isEmpty. Operand 7713 states and 12751 transitions. [2021-12-17 18:57:53,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-17 18:57:53,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:53,906 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:57:53,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 18:57:53,907 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:53,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:53,907 INFO L85 PathProgramCache]: Analyzing trace with hash -843874602, now seen corresponding path program 1 times [2021-12-17 18:57:53,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:53,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393622589] [2021-12-17 18:57:53,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:53,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:53,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:53,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-17 18:57:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:54,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 18:57:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:54,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 18:57:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:54,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 18:57:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:54,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:54,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:54,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393622589] [2021-12-17 18:57:54,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393622589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:54,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:54,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:57:54,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957453939] [2021-12-17 18:57:54,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:54,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:57:54,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:54,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:57:54,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:57:54,061 INFO L87 Difference]: Start difference. First operand 7713 states and 12751 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:57,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:57,076 INFO L93 Difference]: Finished difference Result 22332 states and 36181 transitions. [2021-12-17 18:57:57,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:57:57,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-17 18:57:57,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:57,127 INFO L225 Difference]: With dead ends: 22332 [2021-12-17 18:57:57,127 INFO L226 Difference]: Without dead ends: 16759 [2021-12-17 18:57:57,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:57:57,148 INFO L933 BasicCegarLoop]: 4873 mSDtfsCounter, 5408 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2829 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5426 SdHoareTripleChecker+Valid, 22509 SdHoareTripleChecker+Invalid, 2908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:57,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5426 Valid, 22509 Invalid, 2908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2829 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-17 18:57:57,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16759 states. [2021-12-17 18:57:57,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16759 to 12948. [2021-12-17 18:57:57,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12948 states, 12051 states have (on average 1.613310098746992) internal successors, (19442), 12085 states have internal predecessors, (19442), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2021-12-17 18:57:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12948 states to 12948 states and 21047 transitions. [2021-12-17 18:57:57,727 INFO L78 Accepts]: Start accepts. Automaton has 12948 states and 21047 transitions. Word has length 167 [2021-12-17 18:57:57,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:57,727 INFO L470 AbstractCegarLoop]: Abstraction has 12948 states and 21047 transitions. [2021-12-17 18:57:57,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:57:57,727 INFO L276 IsEmpty]: Start isEmpty. Operand 12948 states and 21047 transitions. [2021-12-17 18:57:57,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-17 18:57:57,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:57,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:57:57,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 18:57:57,735 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:57,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:57,736 INFO L85 PathProgramCache]: Analyzing trace with hash -433264236, now seen corresponding path program 1 times [2021-12-17 18:57:57,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:57,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225765410] [2021-12-17 18:57:57,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:57,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:57,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:57,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-17 18:57:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:57,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 18:57:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:57,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 18:57:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:57,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 18:57:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:57,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:57,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:57,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225765410] [2021-12-17 18:57:57,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225765410] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:57,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:57,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:57:57,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014261139] [2021-12-17 18:57:57,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:57,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:57:57,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:57,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:57:57,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:57:57,874 INFO L87 Difference]: Start difference. First operand 12948 states and 21047 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:00,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:58:00,190 INFO L93 Difference]: Finished difference Result 27774 states and 45096 transitions. [2021-12-17 18:58:00,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:58:00,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-17 18:58:00,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:58:00,252 INFO L225 Difference]: With dead ends: 27774 [2021-12-17 18:58:00,252 INFO L226 Difference]: Without dead ends: 16966 [2021-12-17 18:58:00,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:58:00,297 INFO L933 BasicCegarLoop]: 4542 mSDtfsCounter, 4998 mSDsluCounter, 16700 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5017 SdHoareTripleChecker+Valid, 21242 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:58:00,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5017 Valid, 21242 Invalid, 1448 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 18:58:00,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16966 states. [2021-12-17 18:58:00,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16966 to 12948. [2021-12-17 18:58:00,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12948 states, 12051 states have (on average 1.610571736785329) internal successors, (19409), 12085 states have internal predecessors, (19409), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2021-12-17 18:58:00,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12948 states to 12948 states and 21014 transitions. [2021-12-17 18:58:00,864 INFO L78 Accepts]: Start accepts. Automaton has 12948 states and 21014 transitions. Word has length 167 [2021-12-17 18:58:00,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:58:00,864 INFO L470 AbstractCegarLoop]: Abstraction has 12948 states and 21014 transitions. [2021-12-17 18:58:00,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:00,865 INFO L276 IsEmpty]: Start isEmpty. Operand 12948 states and 21014 transitions. [2021-12-17 18:58:00,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-17 18:58:00,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:58:00,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:58:00,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 18:58:00,878 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:58:00,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:58:00,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1725819858, now seen corresponding path program 1 times [2021-12-17 18:58:00,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:58:00,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079675573] [2021-12-17 18:58:00,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:58:00,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:58:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:00,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:58:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:00,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-17 18:58:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:01,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 18:58:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:01,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 18:58:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:01,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 18:58:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:01,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:58:01,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:58:01,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079675573] [2021-12-17 18:58:01,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079675573] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:58:01,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:58:01,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:58:01,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581360189] [2021-12-17 18:58:01,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:58:01,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:58:01,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:58:01,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:58:01,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:58:01,038 INFO L87 Difference]: Start difference. First operand 12948 states and 21014 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:03,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:58:03,132 INFO L93 Difference]: Finished difference Result 27740 states and 44929 transitions. [2021-12-17 18:58:03,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:58:03,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-17 18:58:03,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:58:03,185 INFO L225 Difference]: With dead ends: 27740 [2021-12-17 18:58:03,185 INFO L226 Difference]: Without dead ends: 16932 [2021-12-17 18:58:03,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:58:03,214 INFO L933 BasicCegarLoop]: 4538 mSDtfsCounter, 4996 mSDsluCounter, 16700 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5015 SdHoareTripleChecker+Valid, 21238 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:58:03,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5015 Valid, 21238 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 18:58:03,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16932 states. [2021-12-17 18:58:03,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16932 to 12948. [2021-12-17 18:58:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12948 states, 12051 states have (on average 1.6078333748236662) internal successors, (19376), 12085 states have internal predecessors, (19376), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2021-12-17 18:58:03,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12948 states to 12948 states and 20981 transitions. [2021-12-17 18:58:03,771 INFO L78 Accepts]: Start accepts. Automaton has 12948 states and 20981 transitions. Word has length 167 [2021-12-17 18:58:03,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:58:03,771 INFO L470 AbstractCegarLoop]: Abstraction has 12948 states and 20981 transitions. [2021-12-17 18:58:03,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:03,772 INFO L276 IsEmpty]: Start isEmpty. Operand 12948 states and 20981 transitions. [2021-12-17 18:58:03,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-17 18:58:03,779 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:58:03,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:58:03,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 18:58:03,779 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:58:03,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:58:03,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1795467732, now seen corresponding path program 1 times [2021-12-17 18:58:03,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:58:03,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489707794] [2021-12-17 18:58:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:58:03,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:58:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:03,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:58:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:03,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-17 18:58:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:03,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 18:58:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:03,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 18:58:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:03,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 18:58:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:03,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:58:03,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:58:03,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489707794] [2021-12-17 18:58:03,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489707794] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:58:03,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:58:03,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:58:03,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979476252] [2021-12-17 18:58:03,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:58:03,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:58:03,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:58:03,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:58:03,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:58:03,905 INFO L87 Difference]: Start difference. First operand 12948 states and 20981 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:07,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:58:07,832 INFO L93 Difference]: Finished difference Result 41450 states and 66515 transitions. [2021-12-17 18:58:07,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:58:07,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-17 18:58:07,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:58:07,924 INFO L225 Difference]: With dead ends: 41450 [2021-12-17 18:58:07,925 INFO L226 Difference]: Without dead ends: 30642 [2021-12-17 18:58:07,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:58:07,953 INFO L933 BasicCegarLoop]: 4853 mSDtfsCounter, 5389 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5407 SdHoareTripleChecker+Valid, 22489 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:58:07,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5407 Valid, 22489 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2771 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-17 18:58:07,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30642 states. [2021-12-17 18:58:08,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30642 to 23546. [2021-12-17 18:58:08,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23546 states, 21785 states have (on average 1.5810879045214596) internal successors, (34444), 21851 states have internal predecessors, (34444), 1305 states have call successors, (1305), 390 states have call predecessors, (1305), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2021-12-17 18:58:08,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23546 states to 23546 states and 37847 transitions. [2021-12-17 18:58:08,969 INFO L78 Accepts]: Start accepts. Automaton has 23546 states and 37847 transitions. Word has length 167 [2021-12-17 18:58:08,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:58:08,969 INFO L470 AbstractCegarLoop]: Abstraction has 23546 states and 37847 transitions. [2021-12-17 18:58:08,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:08,969 INFO L276 IsEmpty]: Start isEmpty. Operand 23546 states and 37847 transitions. [2021-12-17 18:58:08,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-17 18:58:08,982 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:58:08,982 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:58:08,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 18:58:08,982 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:58:08,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:58:08,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2081610862, now seen corresponding path program 1 times [2021-12-17 18:58:08,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:58:08,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5563400] [2021-12-17 18:58:08,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:58:08,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:58:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:09,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:58:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:09,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-17 18:58:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:09,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 18:58:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:09,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 18:58:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:09,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 18:58:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:58:09,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:58:09,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5563400] [2021-12-17 18:58:09,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5563400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:58:09,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:58:09,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:58:09,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127247923] [2021-12-17 18:58:09,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:58:09,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:58:09,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:58:09,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:58:09,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:58:09,122 INFO L87 Difference]: Start difference. First operand 23546 states and 37847 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:11,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:58:11,750 INFO L93 Difference]: Finished difference Result 52452 states and 84832 transitions. [2021-12-17 18:58:11,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:58:11,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-17 18:58:11,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:58:11,996 INFO L225 Difference]: With dead ends: 52452 [2021-12-17 18:58:11,996 INFO L226 Difference]: Without dead ends: 31046 [2021-12-17 18:58:12,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:58:12,044 INFO L933 BasicCegarLoop]: 4531 mSDtfsCounter, 4995 mSDsluCounter, 16700 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5014 SdHoareTripleChecker+Valid, 21231 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:58:12,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5014 Valid, 21231 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:58:12,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31046 states. [2021-12-17 18:58:13,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31046 to 23546. [2021-12-17 18:58:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23546 states, 21785 states have (on average 1.5781042001377095) internal successors, (34379), 21851 states have internal predecessors, (34379), 1305 states have call successors, (1305), 390 states have call predecessors, (1305), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2021-12-17 18:58:13,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23546 states to 23546 states and 37782 transitions. [2021-12-17 18:58:13,096 INFO L78 Accepts]: Start accepts. Automaton has 23546 states and 37782 transitions. Word has length 167 [2021-12-17 18:58:13,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:58:13,096 INFO L470 AbstractCegarLoop]: Abstraction has 23546 states and 37782 transitions. [2021-12-17 18:58:13,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:13,096 INFO L276 IsEmpty]: Start isEmpty. Operand 23546 states and 37782 transitions. [2021-12-17 18:58:13,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-17 18:58:13,108 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:58:13,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:58:13,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 18:58:13,108 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:58:13,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:58:13,109 INFO L85 PathProgramCache]: Analyzing trace with hash -682657260, now seen corresponding path program 1 times [2021-12-17 18:58:13,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:58:13,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985425165] [2021-12-17 18:58:13,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:58:13,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:58:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:13,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:58:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:13,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-17 18:58:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:13,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 18:58:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:13,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 18:58:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:13,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 18:58:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:13,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:58:13,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:58:13,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985425165] [2021-12-17 18:58:13,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985425165] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:58:13,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:58:13,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:58:13,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86150354] [2021-12-17 18:58:13,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:58:13,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:58:13,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:58:13,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:58:13,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:58:13,242 INFO L87 Difference]: Start difference. First operand 23546 states and 37782 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:15,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:58:15,750 INFO L93 Difference]: Finished difference Result 52386 states and 84505 transitions. [2021-12-17 18:58:15,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:58:15,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-17 18:58:15,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:58:15,854 INFO L225 Difference]: With dead ends: 52386 [2021-12-17 18:58:15,854 INFO L226 Difference]: Without dead ends: 30980 [2021-12-17 18:58:15,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:58:15,937 INFO L933 BasicCegarLoop]: 4527 mSDtfsCounter, 4993 mSDsluCounter, 16700 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5012 SdHoareTripleChecker+Valid, 21227 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:58:15,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5012 Valid, 21227 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:58:15,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30980 states. [2021-12-17 18:58:17,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30980 to 23546. [2021-12-17 18:58:17,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23546 states, 21785 states have (on average 1.575120495753959) internal successors, (34314), 21851 states have internal predecessors, (34314), 1305 states have call successors, (1305), 390 states have call predecessors, (1305), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2021-12-17 18:58:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23546 states to 23546 states and 37717 transitions. [2021-12-17 18:58:17,217 INFO L78 Accepts]: Start accepts. Automaton has 23546 states and 37717 transitions. Word has length 167 [2021-12-17 18:58:17,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:58:17,217 INFO L470 AbstractCegarLoop]: Abstraction has 23546 states and 37717 transitions. [2021-12-17 18:58:17,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:17,217 INFO L276 IsEmpty]: Start isEmpty. Operand 23546 states and 37717 transitions. [2021-12-17 18:58:17,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-17 18:58:17,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:58:17,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:58:17,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 18:58:17,230 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:58:17,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:58:17,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1994869586, now seen corresponding path program 1 times [2021-12-17 18:58:17,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:58:17,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730887972] [2021-12-17 18:58:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:58:17,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:58:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:17,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:58:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:17,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-17 18:58:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:17,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 18:58:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:17,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 18:58:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:17,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 18:58:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:58:17,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:58:17,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730887972] [2021-12-17 18:58:17,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730887972] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:58:17,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:58:17,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:58:17,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402013839] [2021-12-17 18:58:17,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:58:17,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:58:17,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:58:17,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:58:17,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:58:17,370 INFO L87 Difference]: Start difference. First operand 23546 states and 37717 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:19,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:58:19,937 INFO L93 Difference]: Finished difference Result 52320 states and 84178 transitions. [2021-12-17 18:58:19,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:58:19,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-17 18:58:19,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:58:20,035 INFO L225 Difference]: With dead ends: 52320 [2021-12-17 18:58:20,036 INFO L226 Difference]: Without dead ends: 30914 [2021-12-17 18:58:20,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:58:20,091 INFO L933 BasicCegarLoop]: 4523 mSDtfsCounter, 5143 mSDsluCounter, 12559 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5162 SdHoareTripleChecker+Valid, 17082 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 18:58:20,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5162 Valid, 17082 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 18:58:20,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30914 states. [2021-12-17 18:58:21,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30914 to 23546. [2021-12-17 18:58:21,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23546 states, 21785 states have (on average 1.572136791370209) internal successors, (34249), 21851 states have internal predecessors, (34249), 1305 states have call successors, (1305), 390 states have call predecessors, (1305), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2021-12-17 18:58:21,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23546 states to 23546 states and 37652 transitions. [2021-12-17 18:58:21,344 INFO L78 Accepts]: Start accepts. Automaton has 23546 states and 37652 transitions. Word has length 167 [2021-12-17 18:58:21,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:58:21,345 INFO L470 AbstractCegarLoop]: Abstraction has 23546 states and 37652 transitions. [2021-12-17 18:58:21,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:21,345 INFO L276 IsEmpty]: Start isEmpty. Operand 23546 states and 37652 transitions. [2021-12-17 18:58:21,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-17 18:58:21,354 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:58:21,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:58:21,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 18:58:21,354 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:58:21,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:58:21,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1936631212, now seen corresponding path program 1 times [2021-12-17 18:58:21,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:58:21,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134262994] [2021-12-17 18:58:21,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:58:21,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:58:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:21,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:58:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:21,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-17 18:58:21,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:21,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 18:58:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:21,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 18:58:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:21,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 18:58:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:21,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:58:21,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:58:21,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134262994] [2021-12-17 18:58:21,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134262994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:58:21,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:58:21,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:58:21,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302172842] [2021-12-17 18:58:21,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:58:21,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:58:21,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:58:21,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:58:21,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:58:21,498 INFO L87 Difference]: Start difference. First operand 23546 states and 37652 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:28,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:58:28,262 INFO L93 Difference]: Finished difference Result 89356 states and 142005 transitions. [2021-12-17 18:58:28,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 18:58:28,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-17 18:58:28,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:58:28,485 INFO L225 Difference]: With dead ends: 89356 [2021-12-17 18:58:28,485 INFO L226 Difference]: Without dead ends: 67950 [2021-12-17 18:58:28,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 18:58:28,555 INFO L933 BasicCegarLoop]: 4997 mSDtfsCounter, 5472 mSDsluCounter, 17625 mSDsCounter, 0 mSdLazyCounter, 3199 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5489 SdHoareTripleChecker+Valid, 22622 SdHoareTripleChecker+Invalid, 3284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-17 18:58:28,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5489 Valid, 22622 Invalid, 3284 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 3199 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-17 18:58:28,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67950 states. [2021-12-17 18:58:31,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67950 to 44482. [2021-12-17 18:58:31,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44482 states, 41057 states have (on average 1.5547409698711547) internal successors, (63833), 41187 states have internal predecessors, (63833), 2521 states have call successors, (2521), 774 states have call predecessors, (2521), 902 states have return successors, (4836), 2648 states have call predecessors, (4836), 2521 states have call successors, (4836) [2021-12-17 18:58:31,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44482 states to 44482 states and 71190 transitions. [2021-12-17 18:58:31,545 INFO L78 Accepts]: Start accepts. Automaton has 44482 states and 71190 transitions. Word has length 167 [2021-12-17 18:58:31,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:58:31,546 INFO L470 AbstractCegarLoop]: Abstraction has 44482 states and 71190 transitions. [2021-12-17 18:58:31,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:31,546 INFO L276 IsEmpty]: Start isEmpty. Operand 44482 states and 71190 transitions. [2021-12-17 18:58:31,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-17 18:58:31,561 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:58:31,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:58:31,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 18:58:31,562 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:58:31,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:58:31,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1647811822, now seen corresponding path program 1 times [2021-12-17 18:58:31,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:58:31,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242719205] [2021-12-17 18:58:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:58:31,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:58:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:31,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:58:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:31,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-17 18:58:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:31,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 18:58:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:31,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 18:58:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:31,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 18:58:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:58:31,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:58:31,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242719205] [2021-12-17 18:58:31,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242719205] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:58:31,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:58:31,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:58:31,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019113037] [2021-12-17 18:58:31,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:58:31,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:58:31,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:58:31,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:58:31,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:58:31,803 INFO L87 Difference]: Start difference. First operand 44482 states and 71190 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:58:43,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:58:43,002 INFO L93 Difference]: Finished difference Result 170776 states and 273685 transitions. [2021-12-17 18:58:43,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 18:58:43,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2021-12-17 18:58:43,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:58:43,560 INFO L225 Difference]: With dead ends: 170776 [2021-12-17 18:58:43,560 INFO L226 Difference]: Without dead ends: 128434 [2021-12-17 18:58:43,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 18:58:43,652 INFO L933 BasicCegarLoop]: 4817 mSDtfsCounter, 5695 mSDsluCounter, 17628 mSDsCounter, 0 mSdLazyCounter, 2678 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5725 SdHoareTripleChecker+Valid, 22445 SdHoareTripleChecker+Invalid, 2766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:58:43,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5725 Valid, 22445 Invalid, 2766 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 2678 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 18:58:43,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128434 states.