./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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/pc_sfifo_1.cil-2+token_ring.04.cil-1.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 82bdcd0599c1cc352b3450b4e917b8a69eeb254589d3b948d4951dae1b33e3d4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 02:29:39,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 02:29:39,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 02:29:39,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 02:29:39,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 02:29:39,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 02:29:39,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 02:29:39,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 02:29:39,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 02:29:39,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 02:29:39,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 02:29:39,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 02:29:39,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 02:29:39,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 02:29:39,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 02:29:39,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 02:29:39,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 02:29:39,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 02:29:39,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 02:29:39,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 02:29:39,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 02:29:39,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 02:29:39,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 02:29:39,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 02:29:39,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 02:29:39,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 02:29:39,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 02:29:39,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 02:29:39,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 02:29:39,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 02:29:39,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 02:29:39,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 02:29:39,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 02:29:39,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 02:29:39,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 02:29:39,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 02:29:39,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 02:29:39,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 02:29:39,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 02:29:39,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 02:29:39,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 02:29:39,755 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 02:29:39,795 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 02:29:39,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 02:29:39,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 02:29:39,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 02:29:39,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 02:29:39,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 02:29:39,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 02:29:39,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 02:29:39,800 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 02:29:39,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 02:29:39,801 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 02:29:39,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 02:29:39,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 02:29:39,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 02:29:39,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 02:29:39,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 02:29:39,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 02:29:39,802 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 02:29:39,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 02:29:39,802 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 02:29:39,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 02:29:39,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 02:29:39,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 02:29:39,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 02:29:39,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:29:39,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 02:29:39,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 02:29:39,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 02:29:39,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 02:29:39,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 02:29:39,811 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 02:29:39,811 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 02:29:39,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 02:29:39,811 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82bdcd0599c1cc352b3450b4e917b8a69eeb254589d3b948d4951dae1b33e3d4 [2021-12-28 02:29:40,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 02:29:40,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 02:29:40,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 02:29:40,175 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 02:29:40,179 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 02:29:40,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c [2021-12-28 02:29:40,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/794aa79a6/940ca8fb8f5a4afc96d1da5c7c45cf29/FLAG287f590ba [2021-12-28 02:29:40,828 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 02:29:40,829 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c [2021-12-28 02:29:40,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/794aa79a6/940ca8fb8f5a4afc96d1da5c7c45cf29/FLAG287f590ba [2021-12-28 02:29:41,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/794aa79a6/940ca8fb8f5a4afc96d1da5c7c45cf29 [2021-12-28 02:29:41,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 02:29:41,257 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 02:29:41,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 02:29:41,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 02:29:41,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 02:29:41,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:29:41" (1/1) ... [2021-12-28 02:29:41,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc35020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:29:41, skipping insertion in model container [2021-12-28 02:29:41,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:29:41" (1/1) ... [2021-12-28 02:29:41,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 02:29:41,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 02:29:41,427 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/pc_sfifo_1.cil-2+token_ring.04.cil-1.c[913,926] [2021-12-28 02:29:41,489 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/pc_sfifo_1.cil-2+token_ring.04.cil-1.c[5977,5990] [2021-12-28 02:29:41,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:29:41,588 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 02:29:41,602 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/pc_sfifo_1.cil-2+token_ring.04.cil-1.c[913,926] [2021-12-28 02:29:41,628 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/pc_sfifo_1.cil-2+token_ring.04.cil-1.c[5977,5990] [2021-12-28 02:29:41,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:29:41,697 INFO L208 MainTranslator]: Completed translation [2021-12-28 02:29:41,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:29:41 WrapperNode [2021-12-28 02:29:41,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 02:29:41,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 02:29:41,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 02:29:41,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 02:29:41,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:29:41" (1/1) ... [2021-12-28 02:29:41,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:29:41" (1/1) ... [2021-12-28 02:29:41,784 INFO L137 Inliner]: procedures = 56, calls = 60, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 591 [2021-12-28 02:29:41,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 02:29:41,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 02:29:41,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 02:29:41,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 02:29:41,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:29:41" (1/1) ... [2021-12-28 02:29:41,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:29:41" (1/1) ... [2021-12-28 02:29:41,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:29:41" (1/1) ... [2021-12-28 02:29:41,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:29:41" (1/1) ... [2021-12-28 02:29:41,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:29:41" (1/1) ... [2021-12-28 02:29:41,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:29:41" (1/1) ... [2021-12-28 02:29:41,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:29:41" (1/1) ... [2021-12-28 02:29:41,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 02:29:41,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 02:29:41,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 02:29:41,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 02:29:41,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:29:41" (1/1) ... [2021-12-28 02:29:41,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:29:41,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:29:41,868 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) [2021-12-28 02:29:41,888 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 [2021-12-28 02:29:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 02:29:41,906 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-28 02:29:41,906 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-28 02:29:41,906 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2021-12-28 02:29:41,906 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2021-12-28 02:29:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-28 02:29:41,908 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-28 02:29:41,908 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-28 02:29:41,908 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-28 02:29:41,909 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-28 02:29:41,909 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-28 02:29:41,909 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-28 02:29:41,909 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-28 02:29:41,909 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-28 02:29:41,909 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-28 02:29:41,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 02:29:41,910 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-28 02:29:41,910 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-28 02:29:41,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 02:29:41,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 02:29:41,910 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-28 02:29:41,910 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-28 02:29:42,049 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 02:29:42,056 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 02:29:42,553 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 02:29:42,562 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 02:29:42,562 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-28 02:29:42,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:29:42 BoogieIcfgContainer [2021-12-28 02:29:42,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 02:29:42,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 02:29:42,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 02:29:42,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 02:29:42,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 02:29:41" (1/3) ... [2021-12-28 02:29:42,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b673164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:29:42, skipping insertion in model container [2021-12-28 02:29:42,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:29:41" (2/3) ... [2021-12-28 02:29:42,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b673164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:29:42, skipping insertion in model container [2021-12-28 02:29:42,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:29:42" (3/3) ... [2021-12-28 02:29:42,577 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.04.cil-1.c [2021-12-28 02:29:42,580 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 02:29:42,580 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 02:29:42,620 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 02:29:42,626 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 [2021-12-28 02:29:42,626 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 02:29:42,658 INFO L276 IsEmpty]: Start isEmpty. Operand has 254 states, 218 states have (on average 1.5963302752293578) internal successors, (348), 223 states have internal predecessors, (348), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-28 02:29:42,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-28 02:29:42,666 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:42,667 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] [2021-12-28 02:29:42,667 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:42,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:42,673 INFO L85 PathProgramCache]: Analyzing trace with hash -633619078, now seen corresponding path program 1 times [2021-12-28 02:29:42,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:42,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429279100] [2021-12-28 02:29:42,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:42,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:42,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 02:29:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:42,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 02:29:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:42,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:42,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:42,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429279100] [2021-12-28 02:29:42,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429279100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:42,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:42,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 02:29:42,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498430131] [2021-12-28 02:29:42,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:42,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 02:29:42,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:43,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 02:29:43,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 02:29:43,028 INFO L87 Difference]: Start difference. First operand has 254 states, 218 states have (on average 1.5963302752293578) internal successors, (348), 223 states have internal predecessors, (348), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 02:29:43,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:43,311 INFO L93 Difference]: Finished difference Result 561 states and 876 transitions. [2021-12-28 02:29:43,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 02:29:43,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2021-12-28 02:29:43,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:43,337 INFO L225 Difference]: With dead ends: 561 [2021-12-28 02:29:43,338 INFO L226 Difference]: Without dead ends: 314 [2021-12-28 02:29:43,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:29:43,354 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 464 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:43,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 648 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 02:29:43,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-12-28 02:29:43,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 308. [2021-12-28 02:29:43,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 267 states have (on average 1.4644194756554307) internal successors, (391), 271 states have internal predecessors, (391), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (32), 26 states have call predecessors, (32), 26 states have call successors, (32) [2021-12-28 02:29:43,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 451 transitions. [2021-12-28 02:29:43,449 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 451 transitions. Word has length 44 [2021-12-28 02:29:43,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:43,450 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 451 transitions. [2021-12-28 02:29:43,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 02:29:43,450 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 451 transitions. [2021-12-28 02:29:43,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-28 02:29:43,453 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:43,453 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] [2021-12-28 02:29:43,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 02:29:43,454 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:43,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:43,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1748999333, now seen corresponding path program 1 times [2021-12-28 02:29:43,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:43,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436830568] [2021-12-28 02:29:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:43,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:43,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 02:29:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:43,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 02:29:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:43,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:43,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:43,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436830568] [2021-12-28 02:29:43,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436830568] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:43,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:43,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 02:29:43,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657956872] [2021-12-28 02:29:43,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:43,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 02:29:43,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:43,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 02:29:43,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 02:29:43,569 INFO L87 Difference]: Start difference. First operand 308 states and 451 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 02:29:43,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:43,848 INFO L93 Difference]: Finished difference Result 556 states and 791 transitions. [2021-12-28 02:29:43,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 02:29:43,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2021-12-28 02:29:43,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:43,864 INFO L225 Difference]: With dead ends: 556 [2021-12-28 02:29:43,865 INFO L226 Difference]: Without dead ends: 432 [2021-12-28 02:29:43,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:29:43,870 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 208 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:43,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 808 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 02:29:43,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-12-28 02:29:43,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 375. [2021-12-28 02:29:43,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 328 states have (on average 1.4481707317073171) internal successors, (475), 332 states have internal predecessors, (475), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (35), 29 states have call predecessors, (35), 29 states have call successors, (35) [2021-12-28 02:29:43,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 541 transitions. [2021-12-28 02:29:43,895 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 541 transitions. Word has length 45 [2021-12-28 02:29:43,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:43,896 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 541 transitions. [2021-12-28 02:29:43,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 02:29:43,897 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 541 transitions. [2021-12-28 02:29:43,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-28 02:29:43,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:43,904 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] [2021-12-28 02:29:43,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 02:29:43,904 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:43,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:43,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1261610502, now seen corresponding path program 1 times [2021-12-28 02:29:43,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:43,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793750043] [2021-12-28 02:29:43,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:43,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:43,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 02:29:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:43,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 02:29:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:44,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:44,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793750043] [2021-12-28 02:29:44,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793750043] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:44,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:44,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 02:29:44,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065014857] [2021-12-28 02:29:44,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:44,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 02:29:44,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:44,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 02:29:44,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 02:29:44,022 INFO L87 Difference]: Start difference. First operand 375 states and 541 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 02:29:44,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:44,175 INFO L93 Difference]: Finished difference Result 783 states and 1100 transitions. [2021-12-28 02:29:44,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 02:29:44,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2021-12-28 02:29:44,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:44,179 INFO L225 Difference]: With dead ends: 783 [2021-12-28 02:29:44,180 INFO L226 Difference]: Without dead ends: 592 [2021-12-28 02:29:44,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:29:44,181 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 473 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:44,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 642 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 02:29:44,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-12-28 02:29:44,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 540. [2021-12-28 02:29:44,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 474 states have (on average 1.4029535864978904) internal successors, (665), 481 states have internal predecessors, (665), 42 states have call successors, (42), 21 states have call predecessors, (42), 22 states have return successors, (52), 38 states have call predecessors, (52), 40 states have call successors, (52) [2021-12-28 02:29:44,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 759 transitions. [2021-12-28 02:29:44,214 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 759 transitions. Word has length 45 [2021-12-28 02:29:44,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:44,215 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 759 transitions. [2021-12-28 02:29:44,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 02:29:44,215 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 759 transitions. [2021-12-28 02:29:44,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-28 02:29:44,217 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:44,217 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:29:44,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 02:29:44,217 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:44,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:44,218 INFO L85 PathProgramCache]: Analyzing trace with hash 315009802, now seen corresponding path program 1 times [2021-12-28 02:29:44,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:44,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359280247] [2021-12-28 02:29:44,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:44,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:44,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 02:29:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:44,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 02:29:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:44,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 02:29:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-28 02:29:44,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:44,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359280247] [2021-12-28 02:29:44,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359280247] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:44,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:44,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 02:29:44,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148051682] [2021-12-28 02:29:44,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:44,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 02:29:44,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:44,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 02:29:44,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 02:29:44,292 INFO L87 Difference]: Start difference. First operand 540 states and 759 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-28 02:29:44,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:44,539 INFO L93 Difference]: Finished difference Result 1124 states and 1544 transitions. [2021-12-28 02:29:44,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 02:29:44,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2021-12-28 02:29:44,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:44,546 INFO L225 Difference]: With dead ends: 1124 [2021-12-28 02:29:44,547 INFO L226 Difference]: Without dead ends: 768 [2021-12-28 02:29:44,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:29:44,556 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 192 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:44,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 863 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 02:29:44,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2021-12-28 02:29:44,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 730. [2021-12-28 02:29:44,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 640 states have (on average 1.3515625) internal successors, (865), 649 states have internal predecessors, (865), 56 states have call successors, (56), 29 states have call predecessors, (56), 32 states have return successors, (76), 52 states have call predecessors, (76), 54 states have call successors, (76) [2021-12-28 02:29:44,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 997 transitions. [2021-12-28 02:29:44,593 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 997 transitions. Word has length 62 [2021-12-28 02:29:44,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:44,594 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 997 transitions. [2021-12-28 02:29:44,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-28 02:29:44,594 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 997 transitions. [2021-12-28 02:29:44,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-28 02:29:44,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:44,597 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:29:44,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 02:29:44,597 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:44,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:44,598 INFO L85 PathProgramCache]: Analyzing trace with hash 2001152359, now seen corresponding path program 1 times [2021-12-28 02:29:44,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:44,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104538163] [2021-12-28 02:29:44,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:44,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:44,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 02:29:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:44,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-28 02:29:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:44,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 02:29:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:44,655 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-28 02:29:44,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:44,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104538163] [2021-12-28 02:29:44,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104538163] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:44,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:44,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 02:29:44,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135340930] [2021-12-28 02:29:44,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:44,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 02:29:44,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:44,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 02:29:44,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 02:29:44,658 INFO L87 Difference]: Start difference. First operand 730 states and 997 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 02:29:44,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:44,805 INFO L93 Difference]: Finished difference Result 1383 states and 1850 transitions. [2021-12-28 02:29:44,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 02:29:44,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2021-12-28 02:29:44,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:44,812 INFO L225 Difference]: With dead ends: 1383 [2021-12-28 02:29:44,812 INFO L226 Difference]: Without dead ends: 929 [2021-12-28 02:29:44,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:29:44,817 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 460 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:44,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 639 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 02:29:44,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-12-28 02:29:44,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 874. [2021-12-28 02:29:44,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 768 states have (on average 1.3229166666666667) internal successors, (1016), 779 states have internal predecessors, (1016), 64 states have call successors, (64), 35 states have call predecessors, (64), 40 states have return successors, (90), 60 states have call predecessors, (90), 62 states have call successors, (90) [2021-12-28 02:29:44,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1170 transitions. [2021-12-28 02:29:44,869 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1170 transitions. Word has length 67 [2021-12-28 02:29:44,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:44,870 INFO L470 AbstractCegarLoop]: Abstraction has 874 states and 1170 transitions. [2021-12-28 02:29:44,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-28 02:29:44,870 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1170 transitions. [2021-12-28 02:29:44,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-28 02:29:44,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:44,873 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:29:44,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 02:29:44,873 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:44,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:44,874 INFO L85 PathProgramCache]: Analyzing trace with hash -454264156, now seen corresponding path program 1 times [2021-12-28 02:29:44,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:44,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434751108] [2021-12-28 02:29:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:44,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:44,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 02:29:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:44,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 02:29:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:45,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 02:29:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:45,033 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 02:29:45,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:45,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434751108] [2021-12-28 02:29:45,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434751108] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 02:29:45,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772328625] [2021-12-28 02:29:45,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:45,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:29:45,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:29:45,039 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 02:29:45,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 02:29:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:45,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 02:29:45,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 02:29:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:45,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 02:29:45,501 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-28 02:29:45,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772328625] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 02:29:45,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-28 02:29:45,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2021-12-28 02:29:45,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76344442] [2021-12-28 02:29:45,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:45,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 02:29:45,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:45,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 02:29:45,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:29:45,504 INFO L87 Difference]: Start difference. First operand 874 states and 1170 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-28 02:29:45,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:45,617 INFO L93 Difference]: Finished difference Result 930 states and 1238 transitions. [2021-12-28 02:29:45,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 02:29:45,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2021-12-28 02:29:45,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:45,622 INFO L225 Difference]: With dead ends: 930 [2021-12-28 02:29:45,623 INFO L226 Difference]: Without dead ends: 927 [2021-12-28 02:29:45,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-28 02:29:45,630 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 635 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:45,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 452 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 02:29:45,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-12-28 02:29:45,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 873. [2021-12-28 02:29:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 768 states have (on average 1.3203125) internal successors, (1014), 778 states have internal predecessors, (1014), 63 states have call successors, (63), 35 states have call predecessors, (63), 40 states have return successors, (90), 60 states have call predecessors, (90), 62 states have call successors, (90) [2021-12-28 02:29:45,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1167 transitions. [2021-12-28 02:29:45,694 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1167 transitions. Word has length 68 [2021-12-28 02:29:45,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:45,696 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 1167 transitions. [2021-12-28 02:29:45,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-28 02:29:45,696 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1167 transitions. [2021-12-28 02:29:45,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-28 02:29:45,698 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:45,699 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:29:45,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 02:29:45,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-28 02:29:45,921 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:45,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:45,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1198093110, now seen corresponding path program 1 times [2021-12-28 02:29:45,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:45,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789061252] [2021-12-28 02:29:45,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:45,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:45,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 02:29:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:45,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 02:29:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:46,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 02:29:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:46,021 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 02:29:46,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:46,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789061252] [2021-12-28 02:29:46,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789061252] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 02:29:46,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873629725] [2021-12-28 02:29:46,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:46,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:29:46,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:29:46,028 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 02:29:46,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 02:29:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:46,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 02:29:46,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 02:29:46,468 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:46,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 02:29:46,598 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-28 02:29:46,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873629725] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 02:29:46,599 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 02:29:46,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2021-12-28 02:29:46,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285098583] [2021-12-28 02:29:46,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 02:29:46,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 02:29:46,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:46,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 02:29:46,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-28 02:29:46,601 INFO L87 Difference]: Start difference. First operand 873 states and 1167 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2021-12-28 02:29:47,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:47,767 INFO L93 Difference]: Finished difference Result 2573 states and 3387 transitions. [2021-12-28 02:29:47,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-28 02:29:47,767 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2021-12-28 02:29:47,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:47,777 INFO L225 Difference]: With dead ends: 2573 [2021-12-28 02:29:47,778 INFO L226 Difference]: Without dead ends: 2029 [2021-12-28 02:29:47,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2021-12-28 02:29:47,782 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 827 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:47,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 2581 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 02:29:47,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2021-12-28 02:29:47,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1262. [2021-12-28 02:29:47,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1118 states have (on average 1.295169946332737) internal successors, (1448), 1136 states have internal predecessors, (1448), 83 states have call successors, (83), 49 states have call predecessors, (83), 59 states have return successors, (124), 77 states have call predecessors, (124), 82 states have call successors, (124) [2021-12-28 02:29:47,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1655 transitions. [2021-12-28 02:29:47,876 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1655 transitions. Word has length 69 [2021-12-28 02:29:47,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:47,876 INFO L470 AbstractCegarLoop]: Abstraction has 1262 states and 1655 transitions. [2021-12-28 02:29:47,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2021-12-28 02:29:47,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1655 transitions. [2021-12-28 02:29:47,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-28 02:29:47,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:47,881 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:29:47,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 02:29:48,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-28 02:29:48,096 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:48,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:48,096 INFO L85 PathProgramCache]: Analyzing trace with hash -888130838, now seen corresponding path program 1 times [2021-12-28 02:29:48,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:48,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922076297] [2021-12-28 02:29:48,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:48,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:48,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 02:29:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:48,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 02:29:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:48,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 02:29:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:48,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 02:29:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:48,177 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-28 02:29:48,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:48,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922076297] [2021-12-28 02:29:48,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922076297] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 02:29:48,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191414355] [2021-12-28 02:29:48,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:48,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:29:48,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:29:48,179 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 02:29:48,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 02:29:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:48,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 02:29:48,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 02:29:48,392 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-28 02:29:48,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 02:29:48,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191414355] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:48,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 02:29:48,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-28 02:29:48,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989620054] [2021-12-28 02:29:48,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:48,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:29:48,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:48,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:29:48,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:29:48,395 INFO L87 Difference]: Start difference. First operand 1262 states and 1655 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-28 02:29:48,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:48,457 INFO L93 Difference]: Finished difference Result 1985 states and 2593 transitions. [2021-12-28 02:29:48,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:29:48,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2021-12-28 02:29:48,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:48,465 INFO L225 Difference]: With dead ends: 1985 [2021-12-28 02:29:48,466 INFO L226 Difference]: Without dead ends: 1140 [2021-12-28 02:29:48,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:29:48,469 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 320 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:48,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 466 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:29:48,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-12-28 02:29:48,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1125. [2021-12-28 02:29:48,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 997 states have (on average 1.2938816449348045) internal successors, (1290), 1014 states have internal predecessors, (1290), 75 states have call successors, (75), 43 states have call predecessors, (75), 51 states have return successors, (110), 68 states have call predecessors, (110), 74 states have call successors, (110) [2021-12-28 02:29:48,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1475 transitions. [2021-12-28 02:29:48,528 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1475 transitions. Word has length 88 [2021-12-28 02:29:48,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:48,529 INFO L470 AbstractCegarLoop]: Abstraction has 1125 states and 1475 transitions. [2021-12-28 02:29:48,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-28 02:29:48,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1475 transitions. [2021-12-28 02:29:48,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-28 02:29:48,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:48,538 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] [2021-12-28 02:29:48,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 02:29:48,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:29:48,755 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:48,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:48,755 INFO L85 PathProgramCache]: Analyzing trace with hash -422269311, now seen corresponding path program 1 times [2021-12-28 02:29:48,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:48,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141897047] [2021-12-28 02:29:48,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:48,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:48,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:29:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:48,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 02:29:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:48,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 02:29:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:48,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 02:29:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:48,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 02:29:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:48,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:48,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:48,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141897047] [2021-12-28 02:29:48,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141897047] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:48,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:48,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:29:48,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892645699] [2021-12-28 02:29:48,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:48,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:29:48,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:48,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:29:48,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:29:48,848 INFO L87 Difference]: Start difference. First operand 1125 states and 1475 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-12-28 02:29:49,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:49,374 INFO L93 Difference]: Finished difference Result 1346 states and 1819 transitions. [2021-12-28 02:29:49,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 02:29:49,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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 90 [2021-12-28 02:29:49,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:49,380 INFO L225 Difference]: With dead ends: 1346 [2021-12-28 02:29:49,380 INFO L226 Difference]: Without dead ends: 1179 [2021-12-28 02:29:49,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-28 02:29:49,382 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 484 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:49,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 724 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 02:29:49,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2021-12-28 02:29:49,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1125. [2021-12-28 02:29:49,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 997 states have (on average 1.2928786359077231) internal successors, (1289), 1014 states have internal predecessors, (1289), 75 states have call successors, (75), 43 states have call predecessors, (75), 51 states have return successors, (110), 68 states have call predecessors, (110), 74 states have call successors, (110) [2021-12-28 02:29:49,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1474 transitions. [2021-12-28 02:29:49,444 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1474 transitions. Word has length 90 [2021-12-28 02:29:49,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:49,445 INFO L470 AbstractCegarLoop]: Abstraction has 1125 states and 1474 transitions. [2021-12-28 02:29:49,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-12-28 02:29:49,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1474 transitions. [2021-12-28 02:29:49,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-28 02:29:49,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:49,448 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] [2021-12-28 02:29:49,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 02:29:49,449 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:49,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:49,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1261302973, now seen corresponding path program 1 times [2021-12-28 02:29:49,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:49,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787333581] [2021-12-28 02:29:49,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:49,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:49,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:29:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:49,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 02:29:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:49,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 02:29:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:49,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 02:29:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:49,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 02:29:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:49,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:49,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:49,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787333581] [2021-12-28 02:29:49,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787333581] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:49,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:49,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 02:29:49,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431879034] [2021-12-28 02:29:49,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:49,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 02:29:49,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:49,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 02:29:49,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 02:29:49,524 INFO L87 Difference]: Start difference. First operand 1125 states and 1474 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-12-28 02:29:50,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:50,519 INFO L93 Difference]: Finished difference Result 1565 states and 2161 transitions. [2021-12-28 02:29:50,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 02:29:50,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 90 [2021-12-28 02:29:50,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:50,526 INFO L225 Difference]: With dead ends: 1565 [2021-12-28 02:29:50,526 INFO L226 Difference]: Without dead ends: 1400 [2021-12-28 02:29:50,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-28 02:29:50,530 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 777 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:50,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 994 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 02:29:50,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-12-28 02:29:50,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1293. [2021-12-28 02:29:50,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1145 states have (on average 1.3248908296943231) internal successors, (1517), 1163 states have internal predecessors, (1517), 88 states have call successors, (88), 49 states have call predecessors, (88), 58 states have return successors, (126), 81 states have call predecessors, (126), 87 states have call successors, (126) [2021-12-28 02:29:50,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1731 transitions. [2021-12-28 02:29:50,609 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1731 transitions. Word has length 90 [2021-12-28 02:29:50,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:50,610 INFO L470 AbstractCegarLoop]: Abstraction has 1293 states and 1731 transitions. [2021-12-28 02:29:50,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-12-28 02:29:50,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1731 transitions. [2021-12-28 02:29:50,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-28 02:29:50,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:50,614 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] [2021-12-28 02:29:50,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 02:29:50,615 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:50,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:50,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1859004871, now seen corresponding path program 1 times [2021-12-28 02:29:50,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:50,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549163935] [2021-12-28 02:29:50,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:50,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:50,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:29:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:50,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 02:29:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:50,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 02:29:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:50,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 02:29:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:50,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 02:29:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:50,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:50,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:50,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549163935] [2021-12-28 02:29:50,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549163935] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:50,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:50,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:29:50,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433213112] [2021-12-28 02:29:50,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:50,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:29:50,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:50,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:29:50,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:29:50,729 INFO L87 Difference]: Start difference. First operand 1293 states and 1731 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-28 02:29:52,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:52,112 INFO L93 Difference]: Finished difference Result 1958 states and 2763 transitions. [2021-12-28 02:29:52,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 02:29:52,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-28 02:29:52,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:52,122 INFO L225 Difference]: With dead ends: 1958 [2021-12-28 02:29:52,122 INFO L226 Difference]: Without dead ends: 1625 [2021-12-28 02:29:52,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 02:29:52,124 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 779 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:52,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 1578 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 02:29:52,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2021-12-28 02:29:52,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1450. [2021-12-28 02:29:52,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1282 states have (on average 1.34399375975039) internal successors, (1723), 1301 states have internal predecessors, (1723), 101 states have call successors, (101), 55 states have call predecessors, (101), 65 states have return successors, (141), 95 states have call predecessors, (141), 100 states have call successors, (141) [2021-12-28 02:29:52,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1965 transitions. [2021-12-28 02:29:52,231 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1965 transitions. Word has length 90 [2021-12-28 02:29:52,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:52,232 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 1965 transitions. [2021-12-28 02:29:52,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-28 02:29:52,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1965 transitions. [2021-12-28 02:29:52,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-28 02:29:52,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:52,236 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] [2021-12-28 02:29:52,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 02:29:52,236 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:52,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:52,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1548739579, now seen corresponding path program 1 times [2021-12-28 02:29:52,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:52,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171598420] [2021-12-28 02:29:52,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:52,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:52,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:29:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:52,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 02:29:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:52,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 02:29:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:52,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 02:29:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:52,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 02:29:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:52,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:52,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:52,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171598420] [2021-12-28 02:29:52,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171598420] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:52,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:52,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:29:52,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118546647] [2021-12-28 02:29:52,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:52,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:29:52,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:52,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:29:52,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:29:52,341 INFO L87 Difference]: Start difference. First operand 1450 states and 1965 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-28 02:29:53,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:53,668 INFO L93 Difference]: Finished difference Result 2535 states and 3645 transitions. [2021-12-28 02:29:53,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 02:29:53,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-28 02:29:53,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:53,677 INFO L225 Difference]: With dead ends: 2535 [2021-12-28 02:29:53,678 INFO L226 Difference]: Without dead ends: 2045 [2021-12-28 02:29:53,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 02:29:53,681 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 773 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:53,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 1566 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 02:29:53,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2021-12-28 02:29:53,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1768. [2021-12-28 02:29:53,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1560 states have (on average 1.373076923076923) internal successors, (2142), 1581 states have internal predecessors, (2142), 127 states have call successors, (127), 67 states have call predecessors, (127), 79 states have return successors, (175), 123 states have call predecessors, (175), 126 states have call successors, (175) [2021-12-28 02:29:53,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2444 transitions. [2021-12-28 02:29:53,790 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2444 transitions. Word has length 90 [2021-12-28 02:29:53,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:53,790 INFO L470 AbstractCegarLoop]: Abstraction has 1768 states and 2444 transitions. [2021-12-28 02:29:53,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-28 02:29:53,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2444 transitions. [2021-12-28 02:29:53,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-28 02:29:53,794 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:53,794 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] [2021-12-28 02:29:53,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 02:29:53,794 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:53,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:53,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1471838781, now seen corresponding path program 1 times [2021-12-28 02:29:53,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:53,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486268844] [2021-12-28 02:29:53,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:53,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:53,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:29:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:53,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 02:29:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:53,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 02:29:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:53,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 02:29:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:53,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 02:29:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:53,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:53,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:53,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486268844] [2021-12-28 02:29:53,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486268844] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:53,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:53,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:29:53,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071204321] [2021-12-28 02:29:53,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:53,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:29:53,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:53,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:29:53,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:29:53,886 INFO L87 Difference]: Start difference. First operand 1768 states and 2444 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-28 02:29:55,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:55,218 INFO L93 Difference]: Finished difference Result 3655 states and 5352 transitions. [2021-12-28 02:29:55,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 02:29:55,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-28 02:29:55,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:55,230 INFO L225 Difference]: With dead ends: 3655 [2021-12-28 02:29:55,231 INFO L226 Difference]: Without dead ends: 2847 [2021-12-28 02:29:55,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 02:29:55,235 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 772 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:55,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 1561 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 02:29:55,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2021-12-28 02:29:55,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2405. [2021-12-28 02:29:55,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2117 states have (on average 1.4076523382144543) internal successors, (2980), 2142 states have internal predecessors, (2980), 179 states have call successors, (179), 91 states have call predecessors, (179), 107 states have return successors, (249), 179 states have call predecessors, (249), 178 states have call successors, (249) [2021-12-28 02:29:55,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 3408 transitions. [2021-12-28 02:29:55,380 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 3408 transitions. Word has length 90 [2021-12-28 02:29:55,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:55,381 INFO L470 AbstractCegarLoop]: Abstraction has 2405 states and 3408 transitions. [2021-12-28 02:29:55,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-28 02:29:55,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 3408 transitions. [2021-12-28 02:29:55,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-28 02:29:55,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:55,385 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] [2021-12-28 02:29:55,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 02:29:55,385 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:55,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:55,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1855777861, now seen corresponding path program 1 times [2021-12-28 02:29:55,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:55,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743363942] [2021-12-28 02:29:55,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:55,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:55,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:29:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:55,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 02:29:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:55,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 02:29:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:55,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 02:29:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:55,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 02:29:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:55,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:55,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:55,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743363942] [2021-12-28 02:29:55,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743363942] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:55,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:55,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:29:55,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973961657] [2021-12-28 02:29:55,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:55,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:29:55,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:55,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:29:55,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:29:55,496 INFO L87 Difference]: Start difference. First operand 2405 states and 3408 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-28 02:29:56,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:56,227 INFO L93 Difference]: Finished difference Result 4291 states and 6337 transitions. [2021-12-28 02:29:56,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 02:29:56,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-28 02:29:56,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:56,241 INFO L225 Difference]: With dead ends: 4291 [2021-12-28 02:29:56,241 INFO L226 Difference]: Without dead ends: 2846 [2021-12-28 02:29:56,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-28 02:29:56,247 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 724 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:56,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [740 Valid, 817 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 02:29:56,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2021-12-28 02:29:56,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2405. [2021-12-28 02:29:56,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2117 states have (on average 1.4034010392064242) internal successors, (2971), 2142 states have internal predecessors, (2971), 179 states have call successors, (179), 91 states have call predecessors, (179), 107 states have return successors, (249), 179 states have call predecessors, (249), 178 states have call successors, (249) [2021-12-28 02:29:56,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 3399 transitions. [2021-12-28 02:29:56,400 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 3399 transitions. Word has length 90 [2021-12-28 02:29:56,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:56,401 INFO L470 AbstractCegarLoop]: Abstraction has 2405 states and 3399 transitions. [2021-12-28 02:29:56,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-28 02:29:56,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 3399 transitions. [2021-12-28 02:29:56,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-28 02:29:56,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:56,405 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] [2021-12-28 02:29:56,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 02:29:56,405 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:56,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:56,406 INFO L85 PathProgramCache]: Analyzing trace with hash -530731645, now seen corresponding path program 1 times [2021-12-28 02:29:56,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:56,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109784299] [2021-12-28 02:29:56,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:56,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:56,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:29:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:56,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 02:29:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:56,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 02:29:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:56,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 02:29:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:56,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 02:29:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:56,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:56,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:56,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109784299] [2021-12-28 02:29:56,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109784299] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:56,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:56,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:29:56,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765612516] [2021-12-28 02:29:56,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:56,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:29:56,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:56,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:29:56,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:29:56,495 INFO L87 Difference]: Start difference. First operand 2405 states and 3399 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-28 02:29:58,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:58,008 INFO L93 Difference]: Finished difference Result 6308 states and 9352 transitions. [2021-12-28 02:29:58,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 02:29:58,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-28 02:29:58,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:58,031 INFO L225 Difference]: With dead ends: 6308 [2021-12-28 02:29:58,031 INFO L226 Difference]: Without dead ends: 4863 [2021-12-28 02:29:58,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 02:29:58,038 INFO L933 BasicCegarLoop]: 487 mSDtfsCounter, 898 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:58,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 1536 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 02:29:58,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4863 states. [2021-12-28 02:29:58,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4863 to 3631. [2021-12-28 02:29:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 3191 states have (on average 1.4349733625822627) internal successors, (4579), 3224 states have internal predecessors, (4579), 275 states have call successors, (275), 139 states have call predecessors, (275), 163 states have return successors, (407), 283 states have call predecessors, (407), 274 states have call successors, (407) [2021-12-28 02:29:58,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 5261 transitions. [2021-12-28 02:29:58,293 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 5261 transitions. Word has length 90 [2021-12-28 02:29:58,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:58,294 INFO L470 AbstractCegarLoop]: Abstraction has 3631 states and 5261 transitions. [2021-12-28 02:29:58,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-28 02:29:58,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 5261 transitions. [2021-12-28 02:29:58,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-28 02:29:58,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:58,299 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] [2021-12-28 02:29:58,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 02:29:58,299 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:58,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:58,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1023357819, now seen corresponding path program 1 times [2021-12-28 02:29:58,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:58,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427418579] [2021-12-28 02:29:58,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:58,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:58,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:29:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:58,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 02:29:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:58,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 02:29:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:58,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 02:29:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:58,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 02:29:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:58,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:58,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:58,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427418579] [2021-12-28 02:29:58,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427418579] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:58,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:58,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:29:58,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111664993] [2021-12-28 02:29:58,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:58,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:29:58,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:58,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:29:58,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:29:58,381 INFO L87 Difference]: Start difference. First operand 3631 states and 5261 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-28 02:30:00,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:30:00,184 INFO L93 Difference]: Finished difference Result 10812 states and 16236 transitions. [2021-12-28 02:30:00,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 02:30:00,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-28 02:30:00,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:30:00,224 INFO L225 Difference]: With dead ends: 10812 [2021-12-28 02:30:00,225 INFO L226 Difference]: Without dead ends: 8141 [2021-12-28 02:30:00,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 02:30:00,261 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 786 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 02:30:00,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 1579 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 02:30:00,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8141 states. [2021-12-28 02:30:00,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8141 to 6112. [2021-12-28 02:30:00,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6112 states, 5376 states have (on average 1.4622395833333333) internal successors, (7861), 5425 states have internal predecessors, (7861), 459 states have call successors, (459), 235 states have call predecessors, (459), 275 states have return successors, (769), 483 states have call predecessors, (769), 458 states have call successors, (769) [2021-12-28 02:30:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6112 states to 6112 states and 9089 transitions. [2021-12-28 02:30:00,694 INFO L78 Accepts]: Start accepts. Automaton has 6112 states and 9089 transitions. Word has length 90 [2021-12-28 02:30:00,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:30:00,694 INFO L470 AbstractCegarLoop]: Abstraction has 6112 states and 9089 transitions. [2021-12-28 02:30:00,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-28 02:30:00,695 INFO L276 IsEmpty]: Start isEmpty. Operand 6112 states and 9089 transitions. [2021-12-28 02:30:00,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-28 02:30:00,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:30:00,702 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] [2021-12-28 02:30:00,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 02:30:00,702 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:30:00,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:30:00,703 INFO L85 PathProgramCache]: Analyzing trace with hash -69417661, now seen corresponding path program 1 times [2021-12-28 02:30:00,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:30:00,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510521825] [2021-12-28 02:30:00,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:30:00,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:30:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:00,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:30:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:00,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 02:30:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:00,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 02:30:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:00,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 02:30:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:00,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 02:30:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:30:00,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:30:00,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510521825] [2021-12-28 02:30:00,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510521825] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:30:00,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:30:00,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:30:00,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132627747] [2021-12-28 02:30:00,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:30:00,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:30:00,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:30:00,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:30:00,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:30:00,785 INFO L87 Difference]: Start difference. First operand 6112 states and 9089 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-28 02:30:02,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:30:02,794 INFO L93 Difference]: Finished difference Result 19627 states and 29922 transitions. [2021-12-28 02:30:02,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 02:30:02,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-28 02:30:02,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:30:02,857 INFO L225 Difference]: With dead ends: 19627 [2021-12-28 02:30:02,857 INFO L226 Difference]: Without dead ends: 14475 [2021-12-28 02:30:02,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 02:30:02,878 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 819 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:30:02,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 1530 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 02:30:02,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14475 states. [2021-12-28 02:30:03,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14475 to 11057. [2021-12-28 02:30:03,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11057 states, 9745 states have (on average 1.4816829143150334) internal successors, (14439), 9826 states have internal predecessors, (14439), 811 states have call successors, (811), 427 states have call predecessors, (811), 499 states have return successors, (1639), 867 states have call predecessors, (1639), 810 states have call successors, (1639) [2021-12-28 02:30:03,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11057 states to 11057 states and 16889 transitions. [2021-12-28 02:30:03,547 INFO L78 Accepts]: Start accepts. Automaton has 11057 states and 16889 transitions. Word has length 90 [2021-12-28 02:30:03,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:30:03,547 INFO L470 AbstractCegarLoop]: Abstraction has 11057 states and 16889 transitions. [2021-12-28 02:30:03,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-28 02:30:03,548 INFO L276 IsEmpty]: Start isEmpty. Operand 11057 states and 16889 transitions. [2021-12-28 02:30:03,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-28 02:30:03,559 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:30:03,560 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] [2021-12-28 02:30:03,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-28 02:30:03,560 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:30:03,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:30:03,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1285571387, now seen corresponding path program 1 times [2021-12-28 02:30:03,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:30:03,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944371400] [2021-12-28 02:30:03,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:30:03,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:30:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:03,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:30:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:03,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 02:30:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:03,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 02:30:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:03,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 02:30:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:03,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 02:30:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:30:03,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:30:03,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944371400] [2021-12-28 02:30:03,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944371400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:30:03,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:30:03,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:30:03,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432262323] [2021-12-28 02:30:03,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:30:03,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:30:03,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:30:03,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:30:03,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:30:03,637 INFO L87 Difference]: Start difference. First operand 11057 states and 16889 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-28 02:30:06,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:30:06,249 INFO L93 Difference]: Finished difference Result 36666 states and 57000 transitions. [2021-12-28 02:30:06,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 02:30:06,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-28 02:30:06,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:30:06,359 INFO L225 Difference]: With dead ends: 36666 [2021-12-28 02:30:06,359 INFO L226 Difference]: Without dead ends: 26569 [2021-12-28 02:30:06,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 02:30:06,404 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 764 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:30:06,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [778 Valid, 1538 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 02:30:06,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26569 states. [2021-12-28 02:30:07,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26569 to 20914. [2021-12-28 02:30:07,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20914 states, 18482 states have (on average 1.4946975435558922) internal successors, (27625), 18627 states have internal predecessors, (27625), 1483 states have call successors, (1483), 811 states have call predecessors, (1483), 947 states have return successors, (3833), 1603 states have call predecessors, (3833), 1482 states have call successors, (3833) [2021-12-28 02:30:07,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20914 states to 20914 states and 32941 transitions. [2021-12-28 02:30:07,896 INFO L78 Accepts]: Start accepts. Automaton has 20914 states and 32941 transitions. Word has length 90 [2021-12-28 02:30:07,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:30:07,897 INFO L470 AbstractCegarLoop]: Abstraction has 20914 states and 32941 transitions. [2021-12-28 02:30:07,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-28 02:30:07,897 INFO L276 IsEmpty]: Start isEmpty. Operand 20914 states and 32941 transitions. [2021-12-28 02:30:07,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-28 02:30:07,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:30:07,917 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] [2021-12-28 02:30:07,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-28 02:30:07,917 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:30:07,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:30:07,918 INFO L85 PathProgramCache]: Analyzing trace with hash -2017538813, now seen corresponding path program 1 times [2021-12-28 02:30:07,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:30:07,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598677425] [2021-12-28 02:30:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:30:07,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:30:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:07,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:30:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:07,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 02:30:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:07,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 02:30:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:07,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 02:30:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:07,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 02:30:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:07,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:30:07,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:30:07,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598677425] [2021-12-28 02:30:07,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598677425] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:30:07,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:30:07,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 02:30:07,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622535231] [2021-12-28 02:30:07,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:30:07,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 02:30:07,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:30:07,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 02:30:07,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 02:30:07,990 INFO L87 Difference]: Start difference. First operand 20914 states and 32941 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-12-28 02:30:11,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:30:11,212 INFO L93 Difference]: Finished difference Result 57719 states and 90746 transitions. [2021-12-28 02:30:11,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 02:30:11,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 90 [2021-12-28 02:30:11,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:30:11,444 INFO L225 Difference]: With dead ends: 57719 [2021-12-28 02:30:11,444 INFO L226 Difference]: Without dead ends: 37766 [2021-12-28 02:30:11,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-28 02:30:11,505 INFO L933 BasicCegarLoop]: 606 mSDtfsCounter, 957 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 02:30:11,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [990 Valid, 1303 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 02:30:11,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37766 states. [2021-12-28 02:30:13,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37766 to 30835. [2021-12-28 02:30:13,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30835 states, 27199 states have (on average 1.4872973271076142) internal successors, (40453), 27473 states have internal predecessors, (40453), 2233 states have call successors, (2233), 1201 states have call predecessors, (2233), 1401 states have return successors, (5313), 2288 states have call predecessors, (5313), 2232 states have call successors, (5313) [2021-12-28 02:30:13,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30835 states to 30835 states and 47999 transitions. [2021-12-28 02:30:13,329 INFO L78 Accepts]: Start accepts. Automaton has 30835 states and 47999 transitions. Word has length 90 [2021-12-28 02:30:13,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:30:13,329 INFO L470 AbstractCegarLoop]: Abstraction has 30835 states and 47999 transitions. [2021-12-28 02:30:13,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-12-28 02:30:13,330 INFO L276 IsEmpty]: Start isEmpty. Operand 30835 states and 47999 transitions. [2021-12-28 02:30:13,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-28 02:30:13,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:30:13,366 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:30:13,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-28 02:30:13,367 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:30:13,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:30:13,367 INFO L85 PathProgramCache]: Analyzing trace with hash 220614803, now seen corresponding path program 1 times [2021-12-28 02:30:13,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:30:13,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510933001] [2021-12-28 02:30:13,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:30:13,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:30:13,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:13,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-28 02:30:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:13,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 02:30:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:13,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 02:30:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:13,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 02:30:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:13,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 02:30:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-28 02:30:13,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:30:13,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510933001] [2021-12-28 02:30:13,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510933001] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 02:30:13,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485744489] [2021-12-28 02:30:13,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:30:13,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:30:13,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:30:13,428 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 02:30:13,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 02:30:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:13,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 02:30:13,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 02:30:13,664 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-28 02:30:13,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 02:30:13,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485744489] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:30:13,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 02:30:13,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-28 02:30:13,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688974487] [2021-12-28 02:30:13,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:30:13,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:30:13,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:30:13,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:30:13,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:30:13,669 INFO L87 Difference]: Start difference. First operand 30835 states and 47999 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-28 02:30:15,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:30:15,117 INFO L93 Difference]: Finished difference Result 31214 states and 48467 transitions. [2021-12-28 02:30:15,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:30:15,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2021-12-28 02:30:15,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:30:15,222 INFO L225 Difference]: With dead ends: 31214 [2021-12-28 02:30:15,222 INFO L226 Difference]: Without dead ends: 29888 [2021-12-28 02:30:15,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:30:15,245 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 62 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:30:15,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 736 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:30:15,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29888 states. [2021-12-28 02:30:16,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29888 to 29888. [2021-12-28 02:30:16,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29888 states, 26355 states have (on average 1.4947827736672359) internal successors, (39395), 26613 states have internal predecessors, (39395), 2176 states have call successors, (2176), 1164 states have call predecessors, (2176), 1356 states have return successors, (5221), 2238 states have call predecessors, (5221), 2176 states have call successors, (5221) [2021-12-28 02:30:16,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29888 states to 29888 states and 46792 transitions. [2021-12-28 02:30:16,950 INFO L78 Accepts]: Start accepts. Automaton has 29888 states and 46792 transitions. Word has length 103 [2021-12-28 02:30:16,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:30:16,950 INFO L470 AbstractCegarLoop]: Abstraction has 29888 states and 46792 transitions. [2021-12-28 02:30:16,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-28 02:30:16,951 INFO L276 IsEmpty]: Start isEmpty. Operand 29888 states and 46792 transitions. [2021-12-28 02:30:17,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-28 02:30:17,014 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:30:17,014 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:30:17,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 02:30:17,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:30:17,239 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:30:17,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:30:17,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1933035341, now seen corresponding path program 1 times [2021-12-28 02:30:17,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:30:17,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676566002] [2021-12-28 02:30:17,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:30:17,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:30:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:17,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:30:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:17,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 02:30:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:17,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 02:30:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:17,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 02:30:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:17,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 02:30:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:17,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 02:30:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:17,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 02:30:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:17,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 02:30:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:17,349 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-28 02:30:17,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:30:17,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676566002] [2021-12-28 02:30:17,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676566002] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 02:30:17,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979394962] [2021-12-28 02:30:17,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:30:17,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:30:17,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:30:17,351 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 02:30:17,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 02:30:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:17,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 02:30:17,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 02:30:17,704 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 02:30:17,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 02:30:17,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979394962] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:30:17,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 02:30:17,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-28 02:30:17,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184776614] [2021-12-28 02:30:17,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:30:17,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:30:17,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:30:17,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:30:17,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:30:17,707 INFO L87 Difference]: Start difference. First operand 29888 states and 46792 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 02:30:20,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:30:20,502 INFO L93 Difference]: Finished difference Result 88953 states and 140142 transitions. [2021-12-28 02:30:20,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:30:20,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 146 [2021-12-28 02:30:20,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:30:20,742 INFO L225 Difference]: With dead ends: 88953 [2021-12-28 02:30:20,743 INFO L226 Difference]: Without dead ends: 59079 [2021-12-28 02:30:20,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:30:20,830 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 209 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:30:20,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 511 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:30:20,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59079 states. [2021-12-28 02:30:23,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59079 to 58689. [2021-12-28 02:30:23,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58689 states, 51726 states have (on average 1.4928662568147546) internal successors, (77220), 52241 states have internal predecessors, (77220), 4250 states have call successors, (4250), 2328 states have call predecessors, (4250), 2712 states have return successors, (10213), 4247 states have call predecessors, (10213), 4250 states have call successors, (10213) [2021-12-28 02:30:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58689 states to 58689 states and 91683 transitions. [2021-12-28 02:30:23,984 INFO L78 Accepts]: Start accepts. Automaton has 58689 states and 91683 transitions. Word has length 146 [2021-12-28 02:30:23,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:30:23,984 INFO L470 AbstractCegarLoop]: Abstraction has 58689 states and 91683 transitions. [2021-12-28 02:30:23,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 02:30:23,984 INFO L276 IsEmpty]: Start isEmpty. Operand 58689 states and 91683 transitions. [2021-12-28 02:30:24,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-28 02:30:24,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:30:24,077 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:30:24,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-28 02:30:24,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:30:24,302 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:30:24,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:30:24,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1942347923, now seen corresponding path program 1 times [2021-12-28 02:30:24,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:30:24,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972338689] [2021-12-28 02:30:24,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:30:24,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:30:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:24,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:30:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:24,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 02:30:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:24,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 02:30:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:24,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 02:30:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:24,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 02:30:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:24,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 02:30:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:24,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 02:30:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:24,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 02:30:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:24,408 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-28 02:30:24,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:30:24,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972338689] [2021-12-28 02:30:24,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972338689] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 02:30:24,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367096550] [2021-12-28 02:30:24,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:30:24,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:30:24,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:30:24,412 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 02:30:24,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 02:30:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:30:24,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 02:30:24,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 02:30:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-28 02:30:24,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 02:30:24,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367096550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:30:24,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 02:30:24,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-28 02:30:24,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299048092] [2021-12-28 02:30:24,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:30:24,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:30:24,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:30:24,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:30:24,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:30:24,758 INFO L87 Difference]: Start difference. First operand 58689 states and 91683 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 02:30:29,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:30:29,767 INFO L93 Difference]: Finished difference Result 174674 states and 274653 transitions. [2021-12-28 02:30:29,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:30:29,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 146 [2021-12-28 02:30:29,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:30:30,252 INFO L225 Difference]: With dead ends: 174674 [2021-12-28 02:30:30,253 INFO L226 Difference]: Without dead ends: 115999 [2021-12-28 02:30:30,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:30:30,645 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 221 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:30:30,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 511 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:30:30,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115999 states.