./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 53b2835bffc5e46db9e843d7a27e5dc2af58bf47930b3bc6dacf70c618d5bd01 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:33:50,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:33:50,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:33:50,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:33:50,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:33:50,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:33:50,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:33:50,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:33:50,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:33:50,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:33:50,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:33:50,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:33:50,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:33:50,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:33:50,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:33:50,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:33:50,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:33:50,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:33:50,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:33:50,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:33:50,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:33:50,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:33:50,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:33:50,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:33:50,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:33:50,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:33:50,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:33:50,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:33:50,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:33:50,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:33:50,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:33:50,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:33:50,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:33:50,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:33:50,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:33:50,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:33:50,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:33:50,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:33:50,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:33:50,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:33:50,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:33:50,606 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:33:50,620 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:33:50,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:33:50,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:33:50,621 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:33:50,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:33:50,622 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:33:50,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:33:50,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:33:50,622 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:33:50,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:33:50,623 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:33:50,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:33:50,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:33:50,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:33:50,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:33:50,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:33:50,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:33:50,624 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:33:50,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:33:50,625 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:33:50,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:33:50,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:33:50,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:33:50,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:33:50,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:33:50,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:33:50,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:33:50,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:33:50,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:33:50,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:33:50,627 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:33:50,627 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:33:50,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:33:50,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:33:50,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53b2835bffc5e46db9e843d7a27e5dc2af58bf47930b3bc6dacf70c618d5bd01 [2021-12-16 02:33:50,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:33:50,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:33:50,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:33:50,843 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:33:50,844 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:33:50,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.c [2021-12-16 02:33:50,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb998cd75/149758eca6ae453aa48f970482327af4/FLAGd5957cf74 [2021-12-16 02:33:51,293 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:33:51,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.03.cil-2.c [2021-12-16 02:33:51,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb998cd75/149758eca6ae453aa48f970482327af4/FLAGd5957cf74 [2021-12-16 02:33:51,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb998cd75/149758eca6ae453aa48f970482327af4 [2021-12-16 02:33:51,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:33:51,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:33:51,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:33:51,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:33:51,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:33:51,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:33:51" (1/1) ... [2021-12-16 02:33:51,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41fcd023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:51, skipping insertion in model container [2021-12-16 02:33:51,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:33:51" (1/1) ... [2021-12-16 02:33:51,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:33:51,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:33:51,892 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_3.cil+token_ring.03.cil-2.c[911,924] [2021-12-16 02:33:51,926 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_3.cil+token_ring.03.cil-2.c[8416,8429] [2021-12-16 02:33:51,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:33:51,970 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:33:51,982 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_3.cil+token_ring.03.cil-2.c[911,924] [2021-12-16 02:33:52,000 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_3.cil+token_ring.03.cil-2.c[8416,8429] [2021-12-16 02:33:52,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:33:52,038 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:33:52,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:52 WrapperNode [2021-12-16 02:33:52,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:33:52,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:33:52,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:33:52,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:33:52,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:52" (1/1) ... [2021-12-16 02:33:52,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:52" (1/1) ... [2021-12-16 02:33:52,108 INFO L137 Inliner]: procedures = 61, calls = 70, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 556 [2021-12-16 02:33:52,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:33:52,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:33:52,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:33:52,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:33:52,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:52" (1/1) ... [2021-12-16 02:33:52,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:52" (1/1) ... [2021-12-16 02:33:52,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:52" (1/1) ... [2021-12-16 02:33:52,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:52" (1/1) ... [2021-12-16 02:33:52,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:52" (1/1) ... [2021-12-16 02:33:52,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:52" (1/1) ... [2021-12-16 02:33:52,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:52" (1/1) ... [2021-12-16 02:33:52,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:33:52,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:33:52,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:33:52,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:33:52,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:52" (1/1) ... [2021-12-16 02:33:52,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:33:52,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:33:52,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 02:33:52,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 02:33:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:33:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-16 02:33:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-16 02:33:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-16 02:33:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-16 02:33:52,239 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-16 02:33:52,240 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-16 02:33:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-16 02:33:52,240 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-16 02:33:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-16 02:33:52,240 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-16 02:33:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-16 02:33:52,240 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-16 02:33:52,241 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-16 02:33:52,241 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-16 02:33:52,241 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-16 02:33:52,241 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-16 02:33:52,241 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-16 02:33:52,241 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-16 02:33:52,241 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-16 02:33:52,241 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-16 02:33:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-16 02:33:52,242 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-16 02:33:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:33:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-16 02:33:52,242 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-16 02:33:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-16 02:33:52,242 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-16 02:33:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:33:52,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:33:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-16 02:33:52,243 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-16 02:33:52,311 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:33:52,312 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:33:52,646 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2021-12-16 02:33:52,646 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2021-12-16 02:33:52,688 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:33:52,694 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:33:52,695 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-16 02:33:52,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:33:52 BoogieIcfgContainer [2021-12-16 02:33:52,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:33:52,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:33:52,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:33:52,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:33:52,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:33:51" (1/3) ... [2021-12-16 02:33:52,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39257cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:33:52, skipping insertion in model container [2021-12-16 02:33:52,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:52" (2/3) ... [2021-12-16 02:33:52,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39257cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:33:52, skipping insertion in model container [2021-12-16 02:33:52,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:33:52" (3/3) ... [2021-12-16 02:33:52,702 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.03.cil-2.c [2021-12-16 02:33:52,705 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:33:52,705 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:33:52,754 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:33:52,760 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 02:33:52,760 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:33:52,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 274 states, 224 states have (on average 1.5714285714285714) internal successors, (352), 230 states have internal predecessors, (352), 33 states have call successors, (33), 14 states have call predecessors, (33), 14 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-16 02:33:52,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 02:33:52,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:33:52,800 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] [2021-12-16 02:33:52,801 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:33:52,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:33:52,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1569523181, now seen corresponding path program 1 times [2021-12-16 02:33:52,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:33:52,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167862795] [2021-12-16 02:33:52,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:33:52,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:33:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:53,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:33:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:53,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:33:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:53,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:33:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:53,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:33:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:53,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:33:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:53,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 02:33:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:53,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 02:33:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:33:53,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:33:53,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167862795] [2021-12-16 02:33:53,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167862795] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:33:53,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:33:53,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:33:53,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135288488] [2021-12-16 02:33:53,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:33:53,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:33:53,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:33:53,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:33:53,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:33:53,205 INFO L87 Difference]: Start difference. First operand has 274 states, 224 states have (on average 1.5714285714285714) internal successors, (352), 230 states have internal predecessors, (352), 33 states have call successors, (33), 14 states have call predecessors, (33), 14 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 02:33:54,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:33:54,088 INFO L93 Difference]: Finished difference Result 680 states and 1041 transitions. [2021-12-16 02:33:54,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:33:54,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-16 02:33:54,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:33:54,099 INFO L225 Difference]: With dead ends: 680 [2021-12-16 02:33:54,099 INFO L226 Difference]: Without dead ends: 415 [2021-12-16 02:33:54,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-12-16 02:33:54,105 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 549 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 02:33:54,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 1544 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 02:33:54,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-12-16 02:33:54,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 376. [2021-12-16 02:33:54,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 306 states have (on average 1.4607843137254901) internal successors, (447), 312 states have internal predecessors, (447), 46 states have call successors, (46), 21 states have call predecessors, (46), 22 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2021-12-16 02:33:54,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 542 transitions. [2021-12-16 02:33:54,160 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 542 transitions. Word has length 65 [2021-12-16 02:33:54,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:33:54,161 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 542 transitions. [2021-12-16 02:33:54,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 02:33:54,161 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 542 transitions. [2021-12-16 02:33:54,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 02:33:54,164 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:33:54,164 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] [2021-12-16 02:33:54,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:33:54,165 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:33:54,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:33:54,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1046555475, now seen corresponding path program 1 times [2021-12-16 02:33:54,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:33:54,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565367067] [2021-12-16 02:33:54,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:33:54,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:33:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:54,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:33:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:54,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:33:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:54,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:33:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:54,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:33:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:54,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:33:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:54,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 02:33:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:54,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 02:33:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:54,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:33:54,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:33:54,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565367067] [2021-12-16 02:33:54,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565367067] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:33:54,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:33:54,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:33:54,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298165018] [2021-12-16 02:33:54,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:33:54,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:33:54,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:33:54,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:33:54,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:33:54,294 INFO L87 Difference]: Start difference. First operand 376 states and 542 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 02:33:55,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:33:55,110 INFO L93 Difference]: Finished difference Result 773 states and 1108 transitions. [2021-12-16 02:33:55,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 02:33:55,111 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-16 02:33:55,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:33:55,115 INFO L225 Difference]: With dead ends: 773 [2021-12-16 02:33:55,115 INFO L226 Difference]: Without dead ends: 564 [2021-12-16 02:33:55,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-12-16 02:33:55,117 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 752 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 02:33:55,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 1746 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 02:33:55,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-12-16 02:33:55,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 488. [2021-12-16 02:33:55,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 396 states have (on average 1.446969696969697) internal successors, (573), 404 states have internal predecessors, (573), 59 states have call successors, (59), 28 states have call predecessors, (59), 31 states have return successors, (70), 59 states have call predecessors, (70), 57 states have call successors, (70) [2021-12-16 02:33:55,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 702 transitions. [2021-12-16 02:33:55,149 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 702 transitions. Word has length 65 [2021-12-16 02:33:55,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:33:55,149 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 702 transitions. [2021-12-16 02:33:55,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 02:33:55,149 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 702 transitions. [2021-12-16 02:33:55,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 02:33:55,152 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:33:55,152 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] [2021-12-16 02:33:55,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:33:55,152 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:33:55,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:33:55,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1219825711, now seen corresponding path program 1 times [2021-12-16 02:33:55,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:33:55,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105861288] [2021-12-16 02:33:55,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:33:55,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:33:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:55,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:33:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:55,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:33:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:55,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:33:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:55,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:33:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:55,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:33:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:55,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 02:33:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:55,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 02:33:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:55,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:33:55,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:33:55,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105861288] [2021-12-16 02:33:55,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105861288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:33:55,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:33:55,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 02:33:55,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279423988] [2021-12-16 02:33:55,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:33:55,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 02:33:55,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:33:55,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 02:33:55,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-16 02:33:55,237 INFO L87 Difference]: Start difference. First operand 488 states and 702 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-16 02:33:56,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:33:56,723 INFO L93 Difference]: Finished difference Result 2034 states and 2900 transitions. [2021-12-16 02:33:56,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-16 02:33:56,724 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2021-12-16 02:33:56,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:33:56,730 INFO L225 Difference]: With dead ends: 2034 [2021-12-16 02:33:56,731 INFO L226 Difference]: Without dead ends: 1701 [2021-12-16 02:33:56,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2021-12-16 02:33:56,733 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 2250 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2268 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 2233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:33:56,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2268 Valid, 2076 Invalid, 2233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:33:56,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2021-12-16 02:33:56,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1541. [2021-12-16 02:33:56,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1244 states have (on average 1.380225080385852) internal successors, (1717), 1267 states have internal predecessors, (1717), 169 states have call successors, (169), 111 states have call predecessors, (169), 126 states have return successors, (203), 165 states have call predecessors, (203), 167 states have call successors, (203) [2021-12-16 02:33:56,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2089 transitions. [2021-12-16 02:33:56,799 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2089 transitions. Word has length 65 [2021-12-16 02:33:56,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:33:56,799 INFO L470 AbstractCegarLoop]: Abstraction has 1541 states and 2089 transitions. [2021-12-16 02:33:56,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-16 02:33:56,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2089 transitions. [2021-12-16 02:33:56,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-16 02:33:56,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:33:56,801 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] [2021-12-16 02:33:56,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 02:33:56,802 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:33:56,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:33:56,802 INFO L85 PathProgramCache]: Analyzing trace with hash 44002010, now seen corresponding path program 1 times [2021-12-16 02:33:56,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:33:56,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25875531] [2021-12-16 02:33:56,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:33:56,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:33:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:56,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:33:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:56,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:33:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:56,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:33:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:56,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:33:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:56,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 02:33:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:56,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 02:33:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:56,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-16 02:33:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:56,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:33:56,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:33:56,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25875531] [2021-12-16 02:33:56,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25875531] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:33:56,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:33:56,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 02:33:56,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290666593] [2021-12-16 02:33:56,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:33:56,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 02:33:56,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:33:56,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 02:33:56,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:33:56,900 INFO L87 Difference]: Start difference. First operand 1541 states and 2089 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 02:33:57,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:33:57,416 INFO L93 Difference]: Finished difference Result 3069 states and 4168 transitions. [2021-12-16 02:33:57,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 02:33:57,416 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2021-12-16 02:33:57,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:33:57,422 INFO L225 Difference]: With dead ends: 3069 [2021-12-16 02:33:57,423 INFO L226 Difference]: Without dead ends: 1689 [2021-12-16 02:33:57,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:33:57,427 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 452 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 02:33:57,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 1668 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 02:33:57,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2021-12-16 02:33:57,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1581. [2021-12-16 02:33:57,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1276 states have (on average 1.365987460815047) internal successors, (1743), 1299 states have internal predecessors, (1743), 169 states have call successors, (169), 111 states have call predecessors, (169), 134 states have return successors, (211), 173 states have call predecessors, (211), 167 states have call successors, (211) [2021-12-16 02:33:57,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2123 transitions. [2021-12-16 02:33:57,481 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2123 transitions. Word has length 66 [2021-12-16 02:33:57,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:33:57,482 INFO L470 AbstractCegarLoop]: Abstraction has 1581 states and 2123 transitions. [2021-12-16 02:33:57,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 02:33:57,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2123 transitions. [2021-12-16 02:33:57,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-16 02:33:57,483 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:33:57,483 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] [2021-12-16 02:33:57,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 02:33:57,483 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:33:57,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:33:57,484 INFO L85 PathProgramCache]: Analyzing trace with hash -985357288, now seen corresponding path program 1 times [2021-12-16 02:33:57,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:33:57,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024389369] [2021-12-16 02:33:57,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:33:57,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:33:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:57,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:33:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:57,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:33:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:57,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:33:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:57,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:33:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:57,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 02:33:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:57,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 02:33:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:57,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-16 02:33:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:57,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:33:57,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:33:57,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024389369] [2021-12-16 02:33:57,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024389369] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:33:57,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:33:57,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 02:33:57,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201360588] [2021-12-16 02:33:57,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:33:57,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 02:33:57,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:33:57,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 02:33:57,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-16 02:33:57,573 INFO L87 Difference]: Start difference. First operand 1581 states and 2123 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-16 02:33:58,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:33:58,908 INFO L93 Difference]: Finished difference Result 5153 states and 6997 transitions. [2021-12-16 02:33:58,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-16 02:33:58,909 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2021-12-16 02:33:58,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:33:58,916 INFO L225 Difference]: With dead ends: 5153 [2021-12-16 02:33:58,917 INFO L226 Difference]: Without dead ends: 1972 [2021-12-16 02:33:58,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2021-12-16 02:33:58,924 INFO L933 BasicCegarLoop]: 517 mSDtfsCounter, 2319 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 02:33:58,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2337 Valid, 2116 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 02:33:58,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2021-12-16 02:33:58,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1792. [2021-12-16 02:33:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1415 states have (on average 1.3208480565371026) internal successors, (1869), 1440 states have internal predecessors, (1869), 209 states have call successors, (209), 139 states have call predecessors, (209), 166 states have return successors, (257), 215 states have call predecessors, (257), 207 states have call successors, (257) [2021-12-16 02:33:58,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2335 transitions. [2021-12-16 02:33:58,996 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2335 transitions. Word has length 66 [2021-12-16 02:33:58,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:33:58,997 INFO L470 AbstractCegarLoop]: Abstraction has 1792 states and 2335 transitions. [2021-12-16 02:33:58,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-16 02:33:58,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2335 transitions. [2021-12-16 02:33:58,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-16 02:33:58,999 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:33:59,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:33:59,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 02:33:59,000 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:33:59,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:33:59,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1962986806, now seen corresponding path program 1 times [2021-12-16 02:33:59,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:33:59,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258471418] [2021-12-16 02:33:59,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:33:59,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:33:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:59,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:33:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:59,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:33:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:59,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:33:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:59,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:33:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:59,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:33:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:59,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:33:59,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:33:59,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258471418] [2021-12-16 02:33:59,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258471418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:33:59,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:33:59,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 02:33:59,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708038115] [2021-12-16 02:33:59,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:33:59,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 02:33:59,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:33:59,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 02:33:59,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:33:59,077 INFO L87 Difference]: Start difference. First operand 1792 states and 2335 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-12-16 02:33:59,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:33:59,436 INFO L93 Difference]: Finished difference Result 1979 states and 2623 transitions. [2021-12-16 02:33:59,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:33:59,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 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 79 [2021-12-16 02:33:59,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:33:59,443 INFO L225 Difference]: With dead ends: 1979 [2021-12-16 02:33:59,443 INFO L226 Difference]: Without dead ends: 1835 [2021-12-16 02:33:59,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:33:59,448 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 465 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 02:33:59,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 772 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 02:33:59,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2021-12-16 02:33:59,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1792. [2021-12-16 02:33:59,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1415 states have (on average 1.3201413427561837) internal successors, (1868), 1440 states have internal predecessors, (1868), 209 states have call successors, (209), 139 states have call predecessors, (209), 166 states have return successors, (257), 215 states have call predecessors, (257), 207 states have call successors, (257) [2021-12-16 02:33:59,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2334 transitions. [2021-12-16 02:33:59,527 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2334 transitions. Word has length 79 [2021-12-16 02:33:59,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:33:59,527 INFO L470 AbstractCegarLoop]: Abstraction has 1792 states and 2334 transitions. [2021-12-16 02:33:59,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-12-16 02:33:59,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2334 transitions. [2021-12-16 02:33:59,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-16 02:33:59,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:33:59,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:33:59,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 02:33:59,530 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:33:59,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:33:59,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1839354316, now seen corresponding path program 1 times [2021-12-16 02:33:59,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:33:59,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609989011] [2021-12-16 02:33:59,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:33:59,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:33:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:59,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:33:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:59,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:33:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:59,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:33:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:59,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:33:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:59,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:33:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:33:59,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:33:59,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:33:59,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609989011] [2021-12-16 02:33:59,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609989011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:33:59,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:33:59,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:33:59,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531097862] [2021-12-16 02:33:59,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:33:59,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:33:59,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:33:59,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:33:59,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:33:59,599 INFO L87 Difference]: Start difference. First operand 1792 states and 2334 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2021-12-16 02:34:00,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:00,292 INFO L93 Difference]: Finished difference Result 2160 states and 2901 transitions. [2021-12-16 02:34:00,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:34:00,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2021-12-16 02:34:00,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:00,299 INFO L225 Difference]: With dead ends: 2160 [2021-12-16 02:34:00,300 INFO L226 Difference]: Without dead ends: 2019 [2021-12-16 02:34:00,301 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 [2021-12-16 02:34:00,302 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 762 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:00,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [784 Valid, 994 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 02:34:00,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2021-12-16 02:34:00,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 1934. [2021-12-16 02:34:00,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1538 states have (on average 1.336150845253576) internal successors, (2055), 1564 states have internal predecessors, (2055), 221 states have call successors, (221), 145 states have call predecessors, (221), 173 states have return successors, (272), 227 states have call predecessors, (272), 219 states have call successors, (272) [2021-12-16 02:34:00,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 2548 transitions. [2021-12-16 02:34:00,391 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 2548 transitions. Word has length 79 [2021-12-16 02:34:00,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:00,391 INFO L470 AbstractCegarLoop]: Abstraction has 1934 states and 2548 transitions. [2021-12-16 02:34:00,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2021-12-16 02:34:00,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 2548 transitions. [2021-12-16 02:34:00,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-16 02:34:00,393 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:00,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:00,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 02:34:00,394 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:00,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:00,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1602306120, now seen corresponding path program 1 times [2021-12-16 02:34:00,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:00,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538078374] [2021-12-16 02:34:00,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:00,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:00,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:00,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:34:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:00,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:34:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:00,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:34:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:00,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:00,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:00,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:00,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538078374] [2021-12-16 02:34:00,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538078374] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:00,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:00,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:00,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847639755] [2021-12-16 02:34:00,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:00,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:00,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:00,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:00,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:00,461 INFO L87 Difference]: Start difference. First operand 1934 states and 2548 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-12-16 02:34:00,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:00,958 INFO L93 Difference]: Finished difference Result 2306 states and 3123 transitions. [2021-12-16 02:34:00,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:34:00,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2021-12-16 02:34:00,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:00,966 INFO L225 Difference]: With dead ends: 2306 [2021-12-16 02:34:00,966 INFO L226 Difference]: Without dead ends: 2023 [2021-12-16 02:34:00,968 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 [2021-12-16 02:34:00,968 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 739 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:00,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [762 Valid, 823 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 02:34:00,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2023 states. [2021-12-16 02:34:01,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2023 to 1934. [2021-12-16 02:34:01,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1538 states have (on average 1.334850455136541) internal successors, (2053), 1564 states have internal predecessors, (2053), 221 states have call successors, (221), 145 states have call predecessors, (221), 173 states have return successors, (272), 227 states have call predecessors, (272), 219 states have call successors, (272) [2021-12-16 02:34:01,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 2546 transitions. [2021-12-16 02:34:01,057 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 2546 transitions. Word has length 79 [2021-12-16 02:34:01,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:01,059 INFO L470 AbstractCegarLoop]: Abstraction has 1934 states and 2546 transitions. [2021-12-16 02:34:01,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-12-16 02:34:01,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 2546 transitions. [2021-12-16 02:34:01,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-16 02:34:01,061 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:01,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:01,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 02:34:01,062 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:01,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:01,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1656699018, now seen corresponding path program 1 times [2021-12-16 02:34:01,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:01,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794172396] [2021-12-16 02:34:01,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:01,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:01,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:01,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:34:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:01,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:34:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:01,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:34:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:01,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:01,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:01,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:01,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794172396] [2021-12-16 02:34:01,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794172396] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:01,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:01,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:01,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436290024] [2021-12-16 02:34:01,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:01,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:01,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:01,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:01,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:01,132 INFO L87 Difference]: Start difference. First operand 1934 states and 2546 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-12-16 02:34:01,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:01,587 INFO L93 Difference]: Finished difference Result 2304 states and 3114 transitions. [2021-12-16 02:34:01,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:34:01,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2021-12-16 02:34:01,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:01,593 INFO L225 Difference]: With dead ends: 2304 [2021-12-16 02:34:01,593 INFO L226 Difference]: Without dead ends: 2021 [2021-12-16 02:34:01,594 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 [2021-12-16 02:34:01,595 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 757 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:01,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [780 Valid, 806 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 02:34:01,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2021-12-16 02:34:01,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 1934. [2021-12-16 02:34:01,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1538 states have (on average 1.3335500650195058) internal successors, (2051), 1564 states have internal predecessors, (2051), 221 states have call successors, (221), 145 states have call predecessors, (221), 173 states have return successors, (272), 227 states have call predecessors, (272), 219 states have call successors, (272) [2021-12-16 02:34:01,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 2544 transitions. [2021-12-16 02:34:01,659 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 2544 transitions. Word has length 79 [2021-12-16 02:34:01,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:01,659 INFO L470 AbstractCegarLoop]: Abstraction has 1934 states and 2544 transitions. [2021-12-16 02:34:01,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-12-16 02:34:01,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 2544 transitions. [2021-12-16 02:34:01,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-16 02:34:01,660 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:01,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:01,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 02:34:01,661 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:01,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:01,661 INFO L85 PathProgramCache]: Analyzing trace with hash -2074095624, now seen corresponding path program 1 times [2021-12-16 02:34:01,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:01,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263712994] [2021-12-16 02:34:01,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:01,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:01,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:01,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:34:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:01,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:34:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:01,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:34:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:01,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:01,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:01,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:01,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263712994] [2021-12-16 02:34:01,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263712994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:01,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:01,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:01,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942616381] [2021-12-16 02:34:01,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:01,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:01,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:01,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:01,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:01,727 INFO L87 Difference]: Start difference. First operand 1934 states and 2544 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-12-16 02:34:02,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:02,243 INFO L93 Difference]: Finished difference Result 2301 states and 3103 transitions. [2021-12-16 02:34:02,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:34:02,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2021-12-16 02:34:02,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:02,250 INFO L225 Difference]: With dead ends: 2301 [2021-12-16 02:34:02,250 INFO L226 Difference]: Without dead ends: 2018 [2021-12-16 02:34:02,252 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 [2021-12-16 02:34:02,252 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 619 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:02,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 957 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 02:34:02,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2021-12-16 02:34:02,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1934. [2021-12-16 02:34:02,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1538 states have (on average 1.3322496749024708) internal successors, (2049), 1564 states have internal predecessors, (2049), 221 states have call successors, (221), 145 states have call predecessors, (221), 173 states have return successors, (272), 227 states have call predecessors, (272), 219 states have call successors, (272) [2021-12-16 02:34:02,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 2542 transitions. [2021-12-16 02:34:02,317 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 2542 transitions. Word has length 79 [2021-12-16 02:34:02,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:02,318 INFO L470 AbstractCegarLoop]: Abstraction has 1934 states and 2542 transitions. [2021-12-16 02:34:02,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-12-16 02:34:02,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 2542 transitions. [2021-12-16 02:34:02,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-16 02:34:02,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:02,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:02,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 02:34:02,320 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:02,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:02,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1394823370, now seen corresponding path program 1 times [2021-12-16 02:34:02,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:02,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223241137] [2021-12-16 02:34:02,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:02,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:02,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:02,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:34:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:02,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:34:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:02,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:34:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:02,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:02,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:02,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:02,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223241137] [2021-12-16 02:34:02,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223241137] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:02,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:02,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:02,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056544426] [2021-12-16 02:34:02,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:02,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:02,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:02,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:02,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:02,393 INFO L87 Difference]: Start difference. First operand 1934 states and 2542 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-12-16 02:34:03,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:03,401 INFO L93 Difference]: Finished difference Result 2525 states and 3424 transitions. [2021-12-16 02:34:03,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 02:34:03,401 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2021-12-16 02:34:03,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:03,408 INFO L225 Difference]: With dead ends: 2525 [2021-12-16 02:34:03,409 INFO L226 Difference]: Without dead ends: 2242 [2021-12-16 02:34:03,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 02:34:03,411 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 761 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:03,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 1536 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 02:34:03,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2021-12-16 02:34:03,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2064. [2021-12-16 02:34:03,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2064 states, 1650 states have (on average 1.3412121212121213) internal successors, (2213), 1677 states have internal predecessors, (2213), 232 states have call successors, (232), 151 states have call predecessors, (232), 180 states have return successors, (285), 239 states have call predecessors, (285), 230 states have call successors, (285) [2021-12-16 02:34:03,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 2730 transitions. [2021-12-16 02:34:03,561 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 2730 transitions. Word has length 79 [2021-12-16 02:34:03,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:03,561 INFO L470 AbstractCegarLoop]: Abstraction has 2064 states and 2730 transitions. [2021-12-16 02:34:03,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-12-16 02:34:03,562 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 2730 transitions. [2021-12-16 02:34:03,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-16 02:34:03,562 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:03,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:03,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 02:34:03,563 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:03,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:03,563 INFO L85 PathProgramCache]: Analyzing trace with hash 566751288, now seen corresponding path program 1 times [2021-12-16 02:34:03,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:03,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771052959] [2021-12-16 02:34:03,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:03,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:03,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:03,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:34:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:03,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:34:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:03,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:34:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:03,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:03,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:03,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771052959] [2021-12-16 02:34:03,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771052959] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:03,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:03,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:03,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091968050] [2021-12-16 02:34:03,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:03,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:03,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:03,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:03,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:03,642 INFO L87 Difference]: Start difference. First operand 2064 states and 2730 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-12-16 02:34:04,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:04,578 INFO L93 Difference]: Finished difference Result 3012 states and 4136 transitions. [2021-12-16 02:34:04,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 02:34:04,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2021-12-16 02:34:04,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:04,586 INFO L225 Difference]: With dead ends: 3012 [2021-12-16 02:34:04,587 INFO L226 Difference]: Without dead ends: 2599 [2021-12-16 02:34:04,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 02:34:04,589 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 823 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:04,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [849 Valid, 1462 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 02:34:04,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2599 states. [2021-12-16 02:34:04,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2599 to 2313. [2021-12-16 02:34:04,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 1864 states have (on average 1.3551502145922747) internal successors, (2526), 1893 states have internal predecessors, (2526), 253 states have call successors, (253), 163 states have call predecessors, (253), 194 states have return successors, (314), 262 states have call predecessors, (314), 251 states have call successors, (314) [2021-12-16 02:34:04,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 3093 transitions. [2021-12-16 02:34:04,669 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 3093 transitions. Word has length 79 [2021-12-16 02:34:04,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:04,670 INFO L470 AbstractCegarLoop]: Abstraction has 2313 states and 3093 transitions. [2021-12-16 02:34:04,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-12-16 02:34:04,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 3093 transitions. [2021-12-16 02:34:04,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-16 02:34:04,671 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:04,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:04,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 02:34:04,672 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:04,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:04,673 INFO L85 PathProgramCache]: Analyzing trace with hash 768575222, now seen corresponding path program 1 times [2021-12-16 02:34:04,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:04,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940232489] [2021-12-16 02:34:04,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:04,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:04,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:04,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:34:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:04,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:34:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:04,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:34:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:04,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:04,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:04,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940232489] [2021-12-16 02:34:04,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940232489] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:04,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:04,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:04,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837786118] [2021-12-16 02:34:04,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:04,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:04,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:04,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:04,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:04,745 INFO L87 Difference]: Start difference. First operand 2313 states and 3093 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-12-16 02:34:05,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:05,631 INFO L93 Difference]: Finished difference Result 3839 states and 5343 transitions. [2021-12-16 02:34:05,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 02:34:05,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2021-12-16 02:34:05,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:05,642 INFO L225 Difference]: With dead ends: 3839 [2021-12-16 02:34:05,642 INFO L226 Difference]: Without dead ends: 3177 [2021-12-16 02:34:05,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 02:34:05,645 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 741 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:05,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 1459 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 02:34:05,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3177 states. [2021-12-16 02:34:05,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3177 to 2822. [2021-12-16 02:34:05,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2822 states, 2305 states have (on average 1.377874186550976) internal successors, (3176), 2338 states have internal predecessors, (3176), 293 states have call successors, (293), 187 states have call predecessors, (293), 222 states have return successors, (376), 306 states have call predecessors, (376), 291 states have call successors, (376) [2021-12-16 02:34:05,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 3845 transitions. [2021-12-16 02:34:05,759 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 3845 transitions. Word has length 79 [2021-12-16 02:34:05,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:05,759 INFO L470 AbstractCegarLoop]: Abstraction has 2822 states and 3845 transitions. [2021-12-16 02:34:05,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-12-16 02:34:05,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 3845 transitions. [2021-12-16 02:34:05,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-16 02:34:05,761 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:05,761 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:05,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 02:34:05,761 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:05,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:05,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1202304308, now seen corresponding path program 1 times [2021-12-16 02:34:05,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:05,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911036306] [2021-12-16 02:34:05,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:05,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:05,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:05,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:34:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:05,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:34:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:05,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:34:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:05,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:05,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:05,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:05,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911036306] [2021-12-16 02:34:05,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911036306] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:05,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:05,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:05,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338969143] [2021-12-16 02:34:05,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:05,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:05,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:05,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:05,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:05,836 INFO L87 Difference]: Start difference. First operand 2822 states and 3845 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-12-16 02:34:06,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:06,624 INFO L93 Difference]: Finished difference Result 4788 states and 6767 transitions. [2021-12-16 02:34:06,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 02:34:06,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2021-12-16 02:34:06,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:06,638 INFO L225 Difference]: With dead ends: 4788 [2021-12-16 02:34:06,639 INFO L226 Difference]: Without dead ends: 3618 [2021-12-16 02:34:06,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-12-16 02:34:06,644 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 467 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:06,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 1361 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 02:34:06,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3618 states. [2021-12-16 02:34:06,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3618 to 2849. [2021-12-16 02:34:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2849 states, 2332 states have (on average 1.3734991423670668) internal successors, (3203), 2365 states have internal predecessors, (3203), 293 states have call successors, (293), 187 states have call predecessors, (293), 222 states have return successors, (376), 306 states have call predecessors, (376), 291 states have call successors, (376) [2021-12-16 02:34:06,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 3872 transitions. [2021-12-16 02:34:06,759 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 3872 transitions. Word has length 79 [2021-12-16 02:34:06,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:06,760 INFO L470 AbstractCegarLoop]: Abstraction has 2849 states and 3872 transitions. [2021-12-16 02:34:06,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-12-16 02:34:06,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 3872 transitions. [2021-12-16 02:34:06,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-16 02:34:06,761 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:06,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:06,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 02:34:06,762 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:06,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:06,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1186785590, now seen corresponding path program 1 times [2021-12-16 02:34:06,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:06,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582368014] [2021-12-16 02:34:06,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:06,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:06,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:06,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:34:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:06,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:34:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:06,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:34:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:06,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:06,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:06,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582368014] [2021-12-16 02:34:06,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582368014] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:06,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:06,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:06,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672620056] [2021-12-16 02:34:06,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:06,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:06,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:06,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:06,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:06,841 INFO L87 Difference]: Start difference. First operand 2849 states and 3872 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-12-16 02:34:08,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:08,218 INFO L93 Difference]: Finished difference Result 7139 states and 10387 transitions. [2021-12-16 02:34:08,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-16 02:34:08,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2021-12-16 02:34:08,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:08,247 INFO L225 Difference]: With dead ends: 7139 [2021-12-16 02:34:08,247 INFO L226 Difference]: Without dead ends: 5942 [2021-12-16 02:34:08,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2021-12-16 02:34:08,256 INFO L933 BasicCegarLoop]: 589 mSDtfsCounter, 1681 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:08,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1709 Valid, 1408 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:34:08,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5942 states. [2021-12-16 02:34:08,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5942 to 5173. [2021-12-16 02:34:08,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 4331 states have (on average 1.408681597783422) internal successors, (6101), 4395 states have internal predecessors, (6101), 489 states have call successors, (489), 300 states have call predecessors, (489), 351 states have return successors, (696), 487 states have call predecessors, (696), 487 states have call successors, (696) [2021-12-16 02:34:08,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 7286 transitions. [2021-12-16 02:34:08,499 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 7286 transitions. Word has length 79 [2021-12-16 02:34:08,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:08,499 INFO L470 AbstractCegarLoop]: Abstraction has 5173 states and 7286 transitions. [2021-12-16 02:34:08,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-12-16 02:34:08,500 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 7286 transitions. [2021-12-16 02:34:08,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-16 02:34:08,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:08,503 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:08,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 02:34:08,503 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:08,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:08,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1233946334, now seen corresponding path program 1 times [2021-12-16 02:34:08,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:08,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681098620] [2021-12-16 02:34:08,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:08,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:08,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:08,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:08,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:08,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:08,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 02:34:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:08,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 02:34:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:08,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 02:34:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:08,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:08,596 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 02:34:08,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:08,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681098620] [2021-12-16 02:34:08,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681098620] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:08,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:08,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 02:34:08,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771725759] [2021-12-16 02:34:08,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:08,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 02:34:08,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:08,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 02:34:08,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:34:08,600 INFO L87 Difference]: Start difference. First operand 5173 states and 7286 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 02:34:09,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:09,282 INFO L93 Difference]: Finished difference Result 6998 states and 9688 transitions. [2021-12-16 02:34:09,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 02:34:09,283 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2021-12-16 02:34:09,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:09,295 INFO L225 Difference]: With dead ends: 6998 [2021-12-16 02:34:09,295 INFO L226 Difference]: Without dead ends: 5367 [2021-12-16 02:34:09,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-16 02:34:09,300 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 295 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:09,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 1759 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 02:34:09,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5367 states. [2021-12-16 02:34:09,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5367 to 5233. [2021-12-16 02:34:09,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 4379 states have (on average 1.4028316967344143) internal successors, (6143), 4443 states have internal predecessors, (6143), 489 states have call successors, (489), 300 states have call predecessors, (489), 363 states have return successors, (708), 499 states have call predecessors, (708), 487 states have call successors, (708) [2021-12-16 02:34:09,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 7340 transitions. [2021-12-16 02:34:09,572 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 7340 transitions. Word has length 91 [2021-12-16 02:34:09,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:09,573 INFO L470 AbstractCegarLoop]: Abstraction has 5233 states and 7340 transitions. [2021-12-16 02:34:09,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 02:34:09,573 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 7340 transitions. [2021-12-16 02:34:09,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-16 02:34:09,575 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:09,576 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:09,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 02:34:09,577 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:09,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:09,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1677847008, now seen corresponding path program 1 times [2021-12-16 02:34:09,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:09,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828454443] [2021-12-16 02:34:09,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:09,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:09,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:09,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:09,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:09,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:09,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 02:34:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:09,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 02:34:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:09,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 02:34:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:09,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 02:34:09,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:09,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828454443] [2021-12-16 02:34:09,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828454443] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:09,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:09,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:34:09,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661406580] [2021-12-16 02:34:09,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:09,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:34:09,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:09,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:34:09,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:09,673 INFO L87 Difference]: Start difference. First operand 5233 states and 7340 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 02:34:10,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:10,412 INFO L93 Difference]: Finished difference Result 6760 states and 9304 transitions. [2021-12-16 02:34:10,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-16 02:34:10,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2021-12-16 02:34:10,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:10,424 INFO L225 Difference]: With dead ends: 6760 [2021-12-16 02:34:10,425 INFO L226 Difference]: Without dead ends: 5307 [2021-12-16 02:34:10,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-12-16 02:34:10,430 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 743 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:10,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 1394 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 02:34:10,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5307 states. [2021-12-16 02:34:10,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5307 to 5012. [2021-12-16 02:34:10,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5012 states, 4211 states have (on average 1.4070292092139633) internal successors, (5925), 4270 states have internal predecessors, (5925), 461 states have call successors, (461), 281 states have call predecessors, (461), 338 states have return successors, (668), 469 states have call predecessors, (668), 459 states have call successors, (668) [2021-12-16 02:34:10,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5012 states to 5012 states and 7054 transitions. [2021-12-16 02:34:10,664 INFO L78 Accepts]: Start accepts. Automaton has 5012 states and 7054 transitions. Word has length 91 [2021-12-16 02:34:10,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:10,664 INFO L470 AbstractCegarLoop]: Abstraction has 5012 states and 7054 transitions. [2021-12-16 02:34:10,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 02:34:10,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5012 states and 7054 transitions. [2021-12-16 02:34:10,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-16 02:34:10,667 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:10,667 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:10,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 02:34:10,667 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:10,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:10,668 INFO L85 PathProgramCache]: Analyzing trace with hash -677958242, now seen corresponding path program 1 times [2021-12-16 02:34:10,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:10,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353732068] [2021-12-16 02:34:10,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:10,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 02:34:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 02:34:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 02:34:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,726 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 02:34:10,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:10,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353732068] [2021-12-16 02:34:10,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353732068] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:10,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:10,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:10,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531932296] [2021-12-16 02:34:10,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:10,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:10,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:10,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:10,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:10,728 INFO L87 Difference]: Start difference. First operand 5012 states and 7054 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-16 02:34:11,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:11,353 INFO L93 Difference]: Finished difference Result 8164 states and 11166 transitions. [2021-12-16 02:34:11,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 02:34:11,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2021-12-16 02:34:11,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:11,371 INFO L225 Difference]: With dead ends: 8164 [2021-12-16 02:34:11,372 INFO L226 Difference]: Without dead ends: 6695 [2021-12-16 02:34:11,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-16 02:34:11,380 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 834 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:11,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [859 Valid, 944 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 02:34:11,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6695 states. [2021-12-16 02:34:11,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6695 to 6481. [2021-12-16 02:34:11,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6481 states, 5360 states have (on average 1.3718283582089552) internal successors, (7353), 5448 states have internal predecessors, (7353), 622 states have call successors, (622), 394 states have call predecessors, (622), 497 states have return successors, (951), 648 states have call predecessors, (951), 620 states have call successors, (951) [2021-12-16 02:34:11,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6481 states to 6481 states and 8926 transitions. [2021-12-16 02:34:11,661 INFO L78 Accepts]: Start accepts. Automaton has 6481 states and 8926 transitions. Word has length 91 [2021-12-16 02:34:11,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:11,661 INFO L470 AbstractCegarLoop]: Abstraction has 6481 states and 8926 transitions. [2021-12-16 02:34:11,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-16 02:34:11,662 INFO L276 IsEmpty]: Start isEmpty. Operand 6481 states and 8926 transitions. [2021-12-16 02:34:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-16 02:34:11,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:11,664 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:11,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 02:34:11,665 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:11,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:11,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1735796320, now seen corresponding path program 1 times [2021-12-16 02:34:11,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:11,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796518681] [2021-12-16 02:34:11,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:11,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:11,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:11,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:11,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:11,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:11,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 02:34:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:11,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 02:34:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:11,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 02:34:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:11,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 02:34:11,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:11,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796518681] [2021-12-16 02:34:11,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796518681] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:11,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:11,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:34:11,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372168593] [2021-12-16 02:34:11,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:11,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:34:11,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:11,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:34:11,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:34:11,711 INFO L87 Difference]: Start difference. First operand 6481 states and 8926 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 02:34:12,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:12,155 INFO L93 Difference]: Finished difference Result 8065 states and 10910 transitions. [2021-12-16 02:34:12,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 02:34:12,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2021-12-16 02:34:12,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:12,166 INFO L225 Difference]: With dead ends: 8065 [2021-12-16 02:34:12,167 INFO L226 Difference]: Without dead ends: 5127 [2021-12-16 02:34:12,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:34:12,172 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 410 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:12,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [425 Valid, 965 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 02:34:12,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5127 states. [2021-12-16 02:34:12,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5127 to 5012. [2021-12-16 02:34:12,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5012 states, 4211 states have (on average 1.3982426976965092) internal successors, (5888), 4270 states have internal predecessors, (5888), 461 states have call successors, (461), 281 states have call predecessors, (461), 338 states have return successors, (668), 469 states have call predecessors, (668), 459 states have call successors, (668) [2021-12-16 02:34:12,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5012 states to 5012 states and 7017 transitions. [2021-12-16 02:34:12,358 INFO L78 Accepts]: Start accepts. Automaton has 5012 states and 7017 transitions. Word has length 91 [2021-12-16 02:34:12,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:12,359 INFO L470 AbstractCegarLoop]: Abstraction has 5012 states and 7017 transitions. [2021-12-16 02:34:12,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 02:34:12,359 INFO L276 IsEmpty]: Start isEmpty. Operand 5012 states and 7017 transitions. [2021-12-16 02:34:12,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-16 02:34:12,361 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:12,361 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 02:34:12,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 02:34:12,362 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:12,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:12,362 INFO L85 PathProgramCache]: Analyzing trace with hash -855388424, now seen corresponding path program 1 times [2021-12-16 02:34:12,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:12,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450810345] [2021-12-16 02:34:12,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:12,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 02:34:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 02:34:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 02:34:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 02:34:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,424 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 02:34:12,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:12,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450810345] [2021-12-16 02:34:12,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450810345] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:12,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:12,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 02:34:12,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155856738] [2021-12-16 02:34:12,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:12,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 02:34:12,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:12,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 02:34:12,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:34:12,426 INFO L87 Difference]: Start difference. First operand 5012 states and 7017 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-16 02:34:13,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:13,513 INFO L93 Difference]: Finished difference Result 7430 states and 10100 transitions. [2021-12-16 02:34:13,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-16 02:34:13,514 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2021-12-16 02:34:13,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:13,526 INFO L225 Difference]: With dead ends: 7430 [2021-12-16 02:34:13,527 INFO L226 Difference]: Without dead ends: 5810 [2021-12-16 02:34:13,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2021-12-16 02:34:13,532 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 1350 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:13,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1384 Valid, 1440 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 02:34:13,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5810 states. [2021-12-16 02:34:13,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5810 to 5633. [2021-12-16 02:34:13,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5633 states, 4678 states have (on average 1.3745190252244548) internal successors, (6430), 4745 states have internal predecessors, (6430), 538 states have call successors, (538), 329 states have call predecessors, (538), 415 states have return successors, (799), 567 states have call predecessors, (799), 536 states have call successors, (799) [2021-12-16 02:34:13,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5633 states to 5633 states and 7767 transitions. [2021-12-16 02:34:13,753 INFO L78 Accepts]: Start accepts. Automaton has 5633 states and 7767 transitions. Word has length 92 [2021-12-16 02:34:13,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:13,753 INFO L470 AbstractCegarLoop]: Abstraction has 5633 states and 7767 transitions. [2021-12-16 02:34:13,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-16 02:34:13,754 INFO L276 IsEmpty]: Start isEmpty. Operand 5633 states and 7767 transitions. [2021-12-16 02:34:13,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-16 02:34:13,759 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:13,759 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:13,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 02:34:13,759 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:13,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:13,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1308432902, now seen corresponding path program 1 times [2021-12-16 02:34:13,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:13,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079170665] [2021-12-16 02:34:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:13,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:34:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:34:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:34:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 02:34:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-16 02:34:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 02:34:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,875 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-16 02:34:13,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:13,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079170665] [2021-12-16 02:34:13,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079170665] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:34:13,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514627901] [2021-12-16 02:34:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:13,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:34:13,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:34:13,878 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) [2021-12-16 02:34:13,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 02:34:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 02:34:13,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:34:14,242 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 02:34:14,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:34:14,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514627901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:14,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 02:34:14,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-16 02:34:14,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857103322] [2021-12-16 02:34:14,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:14,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:34:14,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:14,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:34:14,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:14,243 INFO L87 Difference]: Start difference. First operand 5633 states and 7767 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) [2021-12-16 02:34:14,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:14,695 INFO L93 Difference]: Finished difference Result 12567 states and 18092 transitions. [2021-12-16 02:34:14,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:34:14,696 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 128 [2021-12-16 02:34:14,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:14,722 INFO L225 Difference]: With dead ends: 12567 [2021-12-16 02:34:14,722 INFO L226 Difference]: Without dead ends: 9046 [2021-12-16 02:34:14,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:14,735 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 313 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 570 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 [2021-12-16 02:34:14,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 570 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:34:14,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9046 states. [2021-12-16 02:34:15,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9046 to 8988. [2021-12-16 02:34:15,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8988 states, 7567 states have (on average 1.4024051803885291) internal successors, (10612), 7673 states have internal predecessors, (10612), 814 states have call successors, (814), 495 states have call predecessors, (814), 605 states have return successors, (1218), 828 states have call predecessors, (1218), 812 states have call successors, (1218) [2021-12-16 02:34:15,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8988 states to 8988 states and 12644 transitions. [2021-12-16 02:34:15,189 INFO L78 Accepts]: Start accepts. Automaton has 8988 states and 12644 transitions. Word has length 128 [2021-12-16 02:34:15,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:15,190 INFO L470 AbstractCegarLoop]: Abstraction has 8988 states and 12644 transitions. [2021-12-16 02:34:15,190 INFO L471 AbstractCegarLoop]: INTERPOLANT 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) [2021-12-16 02:34:15,190 INFO L276 IsEmpty]: Start isEmpty. Operand 8988 states and 12644 transitions. [2021-12-16 02:34:15,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-16 02:34:15,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:15,199 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:15,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 02:34:15,416 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,SelfDestructingSolverStorable20 [2021-12-16 02:34:15,416 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:15,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:15,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1559953626, now seen corresponding path program 1 times [2021-12-16 02:34:15,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:15,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996668872] [2021-12-16 02:34:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:15,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:34:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:34:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:34:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 02:34:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-16 02:34:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 02:34:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-16 02:34:15,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:15,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996668872] [2021-12-16 02:34:15,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996668872] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:34:15,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490653768] [2021-12-16 02:34:15,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:15,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:34:15,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:34:15,513 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) [2021-12-16 02:34:15,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 02:34:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 02:34:15,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:34:15,754 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-16 02:34:15,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:34:15,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490653768] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:15,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 02:34:15,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-16 02:34:15,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590286822] [2021-12-16 02:34:15,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:15,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:34:15,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:15,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:34:15,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:15,757 INFO L87 Difference]: Start difference. First operand 8988 states and 12644 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 02:34:16,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:16,279 INFO L93 Difference]: Finished difference Result 22445 states and 32435 transitions. [2021-12-16 02:34:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:34:16,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 128 [2021-12-16 02:34:16,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:16,304 INFO L225 Difference]: With dead ends: 22445 [2021-12-16 02:34:16,304 INFO L226 Difference]: Without dead ends: 10247 [2021-12-16 02:34:16,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:16,324 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 190 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 920 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 [2021-12-16 02:34:16,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 920 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:34:16,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10247 states. [2021-12-16 02:34:16,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10247 to 10247. [2021-12-16 02:34:16,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10247 states, 8657 states have (on average 1.4067228832158947) internal successors, (12178), 8771 states have internal predecessors, (12178), 915 states have call successors, (915), 555 states have call predecessors, (915), 673 states have return successors, (1380), 929 states have call predecessors, (1380), 913 states have call successors, (1380) [2021-12-16 02:34:16,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10247 states to 10247 states and 14473 transitions. [2021-12-16 02:34:16,718 INFO L78 Accepts]: Start accepts. Automaton has 10247 states and 14473 transitions. Word has length 128 [2021-12-16 02:34:16,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:16,718 INFO L470 AbstractCegarLoop]: Abstraction has 10247 states and 14473 transitions. [2021-12-16 02:34:16,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 02:34:16,719 INFO L276 IsEmpty]: Start isEmpty. Operand 10247 states and 14473 transitions. [2021-12-16 02:34:16,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 02:34:16,731 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:16,731 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:16,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-16 02:34:16,947 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,SelfDestructingSolverStorable21 [2021-12-16 02:34:16,947 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:16,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:16,948 INFO L85 PathProgramCache]: Analyzing trace with hash 839593669, now seen corresponding path program 1 times [2021-12-16 02:34:16,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:16,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001034526] [2021-12-16 02:34:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:16,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:16,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:16,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 02:34:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 02:34:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 02:34:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 02:34:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 02:34:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 02:34:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 02:34:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:34:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:34:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-16 02:34:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 02:34:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-16 02:34:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-16 02:34:17,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:17,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001034526] [2021-12-16 02:34:17,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001034526] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:34:17,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672889259] [2021-12-16 02:34:17,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:17,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:34:17,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:34:17,055 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) [2021-12-16 02:34:17,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 02:34:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 02:34:17,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:34:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-16 02:34:17,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:34:17,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672889259] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:17,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 02:34:17,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2021-12-16 02:34:17,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241472930] [2021-12-16 02:34:17,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:17,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:34:17,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:17,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:34:17,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:34:17,389 INFO L87 Difference]: Start difference. First operand 10247 states and 14473 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 02:34:17,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:17,781 INFO L93 Difference]: Finished difference Result 14173 states and 19302 transitions. [2021-12-16 02:34:17,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:34:17,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2021-12-16 02:34:17,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:17,811 INFO L225 Difference]: With dead ends: 14173 [2021-12-16 02:34:17,812 INFO L226 Difference]: Without dead ends: 12159 [2021-12-16 02:34:17,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:34:17,822 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 61 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:17,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 723 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:34:17,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12159 states. [2021-12-16 02:34:18,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12159 to 12117. [2021-12-16 02:34:18,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12117 states, 10114 states have (on average 1.377496539450267) internal successors, (13932), 10251 states have internal predecessors, (13932), 1122 states have call successors, (1122), 716 states have call predecessors, (1122), 879 states have return successors, (1648), 1158 states have call predecessors, (1648), 1120 states have call successors, (1648) [2021-12-16 02:34:18,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12117 states to 12117 states and 16702 transitions. [2021-12-16 02:34:18,407 INFO L78 Accepts]: Start accepts. Automaton has 12117 states and 16702 transitions. Word has length 163 [2021-12-16 02:34:18,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:18,407 INFO L470 AbstractCegarLoop]: Abstraction has 12117 states and 16702 transitions. [2021-12-16 02:34:18,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 02:34:18,407 INFO L276 IsEmpty]: Start isEmpty. Operand 12117 states and 16702 transitions. [2021-12-16 02:34:18,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-16 02:34:18,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:18,421 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:18,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 02:34:18,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:34:18,635 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:18,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:18,636 INFO L85 PathProgramCache]: Analyzing trace with hash 675100022, now seen corresponding path program 1 times [2021-12-16 02:34:18,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:18,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768495387] [2021-12-16 02:34:18,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:18,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:34:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:34:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:34:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 02:34:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-16 02:34:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-16 02:34:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-16 02:34:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-16 02:34:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-16 02:34:18,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:18,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768495387] [2021-12-16 02:34:18,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768495387] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:34:18,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380060438] [2021-12-16 02:34:18,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:18,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:34:18,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:34:18,745 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) [2021-12-16 02:34:18,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 02:34:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 02:34:18,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:34:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-16 02:34:19,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:34:19,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380060438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:19,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 02:34:19,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-16 02:34:19,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371812215] [2021-12-16 02:34:19,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:19,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:34:19,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:19,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:34:19,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:19,092 INFO L87 Difference]: Start difference. First operand 12117 states and 16702 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-16 02:34:19,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:19,981 INFO L93 Difference]: Finished difference Result 28131 states and 40436 transitions. [2021-12-16 02:34:19,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:34:19,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 166 [2021-12-16 02:34:19,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:20,026 INFO L225 Difference]: With dead ends: 28131 [2021-12-16 02:34:20,026 INFO L226 Difference]: Without dead ends: 19996 [2021-12-16 02:34:20,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:20,042 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 267 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 569 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 [2021-12-16 02:34:20,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 569 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:34:20,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19996 states. [2021-12-16 02:34:20,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19996 to 19862. [2021-12-16 02:34:20,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19862 states, 16784 states have (on average 1.403181601525262) internal successors, (23551), 17007 states have internal predecessors, (23551), 1751 states have call successors, (1751), 1106 states have call predecessors, (1751), 1325 states have return successors, (2609), 1757 states have call predecessors, (2609), 1749 states have call successors, (2609) [2021-12-16 02:34:20,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19862 states to 19862 states and 27911 transitions. [2021-12-16 02:34:20,810 INFO L78 Accepts]: Start accepts. Automaton has 19862 states and 27911 transitions. Word has length 166 [2021-12-16 02:34:20,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:20,811 INFO L470 AbstractCegarLoop]: Abstraction has 19862 states and 27911 transitions. [2021-12-16 02:34:20,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-16 02:34:20,811 INFO L276 IsEmpty]: Start isEmpty. Operand 19862 states and 27911 transitions. [2021-12-16 02:34:20,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-16 02:34:20,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:20,834 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:20,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-16 02:34:21,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:34:21,051 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:21,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:21,051 INFO L85 PathProgramCache]: Analyzing trace with hash -37312834, now seen corresponding path program 1 times [2021-12-16 02:34:21,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:21,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725880122] [2021-12-16 02:34:21,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:21,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:21,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:21,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:34:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:21,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:34:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:21,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:34:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:21,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:21,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 02:34:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:21,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-16 02:34:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:21,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 02:34:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:21,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-16 02:34:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:21,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-16 02:34:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:21,154 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-16 02:34:21,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:21,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725880122] [2021-12-16 02:34:21,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725880122] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:34:21,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724127624] [2021-12-16 02:34:21,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:21,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:34:21,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:34:21,156 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) [2021-12-16 02:34:21,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 02:34:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:21,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 02:34:21,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:34:21,504 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-16 02:34:21,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:34:21,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724127624] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:21,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 02:34:21,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-16 02:34:21,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424522781] [2021-12-16 02:34:21,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:21,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:34:21,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:21,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:34:21,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:21,506 INFO L87 Difference]: Start difference. First operand 19862 states and 27911 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-16 02:34:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:22,408 INFO L93 Difference]: Finished difference Result 37120 states and 53445 transitions. [2021-12-16 02:34:22,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:34:22,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 166 [2021-12-16 02:34:22,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:22,480 INFO L225 Difference]: With dead ends: 37120 [2021-12-16 02:34:22,480 INFO L226 Difference]: Without dead ends: 27166 [2021-12-16 02:34:22,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:22,510 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 268 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 578 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 [2021-12-16 02:34:22,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 578 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:34:22,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27166 states. [2021-12-16 02:34:23,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27166 to 26972. [2021-12-16 02:34:23,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26972 states, 22938 states have (on average 1.4149882291394194) internal successors, (32457), 23229 states have internal predecessors, (32457), 2309 states have call successors, (2309), 1456 states have call predecessors, (2309), 1723 states have return successors, (3409), 2295 states have call predecessors, (3409), 2307 states have call successors, (3409) [2021-12-16 02:34:23,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26972 states to 26972 states and 38175 transitions. [2021-12-16 02:34:23,808 INFO L78 Accepts]: Start accepts. Automaton has 26972 states and 38175 transitions. Word has length 166 [2021-12-16 02:34:23,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:23,809 INFO L470 AbstractCegarLoop]: Abstraction has 26972 states and 38175 transitions. [2021-12-16 02:34:23,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-16 02:34:23,809 INFO L276 IsEmpty]: Start isEmpty. Operand 26972 states and 38175 transitions. [2021-12-16 02:34:23,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-16 02:34:23,838 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:23,838 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:23,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 02:34:24,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-16 02:34:24,039 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:24,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:24,040 INFO L85 PathProgramCache]: Analyzing trace with hash -539839329, now seen corresponding path program 1 times [2021-12-16 02:34:24,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:24,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374342390] [2021-12-16 02:34:24,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:24,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:24,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:24,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:34:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:24,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:34:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:24,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:34:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:24,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:24,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 02:34:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:24,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 02:34:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:24,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-16 02:34:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:24,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-16 02:34:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:24,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-16 02:34:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:24,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-16 02:34:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-16 02:34:24,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:24,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374342390] [2021-12-16 02:34:24,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374342390] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:34:24,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27052843] [2021-12-16 02:34:24,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:24,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:34:24,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:34:24,137 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) [2021-12-16 02:34:24,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 02:34:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:24,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 02:34:24,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:34:24,472 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 02:34:24,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:34:24,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27052843] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:24,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 02:34:24,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-16 02:34:24,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221137912] [2021-12-16 02:34:24,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:24,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:34:24,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:24,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:34:24,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:24,475 INFO L87 Difference]: Start difference. First operand 26972 states and 38175 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-16 02:34:25,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:25,505 INFO L93 Difference]: Finished difference Result 40541 states and 57801 transitions. [2021-12-16 02:34:25,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:34:25,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 184 [2021-12-16 02:34:25,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:25,561 INFO L225 Difference]: With dead ends: 40541 [2021-12-16 02:34:25,562 INFO L226 Difference]: Without dead ends: 20152 [2021-12-16 02:34:25,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:25,608 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 289 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:25,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 404 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:34:25,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20152 states. [2021-12-16 02:34:26,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20152 to 19063. [2021-12-16 02:34:26,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19063 states, 16177 states have (on average 1.3573592136984607) internal successors, (21958), 16336 states have internal predecessors, (21958), 1612 states have call successors, (1612), 1089 states have call predecessors, (1612), 1272 states have return successors, (2102), 1642 states have call predecessors, (2102), 1610 states have call successors, (2102) [2021-12-16 02:34:26,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19063 states to 19063 states and 25672 transitions. [2021-12-16 02:34:26,621 INFO L78 Accepts]: Start accepts. Automaton has 19063 states and 25672 transitions. Word has length 184 [2021-12-16 02:34:26,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:26,621 INFO L470 AbstractCegarLoop]: Abstraction has 19063 states and 25672 transitions. [2021-12-16 02:34:26,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-16 02:34:26,621 INFO L276 IsEmpty]: Start isEmpty. Operand 19063 states and 25672 transitions. [2021-12-16 02:34:26,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-16 02:34:26,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:26,635 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:26,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 02:34:26,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-16 02:34:26,836 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:26,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:26,836 INFO L85 PathProgramCache]: Analyzing trace with hash -331915747, now seen corresponding path program 1 times [2021-12-16 02:34:26,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:26,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795303999] [2021-12-16 02:34:26,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:26,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:26,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:26,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:34:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:26,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:34:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:26,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:34:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:26,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:26,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 02:34:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:26,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 02:34:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:26,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-16 02:34:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:26,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-16 02:34:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:26,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-16 02:34:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:26,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-16 02:34:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-16 02:34:26,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:26,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795303999] [2021-12-16 02:34:26,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795303999] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:34:26,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823189922] [2021-12-16 02:34:26,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:26,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:34:26,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:34:26,934 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 02:34:26,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 02:34:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:27,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 02:34:27,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:34:27,218 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-16 02:34:27,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:34:27,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823189922] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:27,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 02:34:27,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-16 02:34:27,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609127528] [2021-12-16 02:34:27,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:27,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:34:27,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:27,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:34:27,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:27,221 INFO L87 Difference]: Start difference. First operand 19063 states and 25672 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-16 02:34:28,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:28,015 INFO L93 Difference]: Finished difference Result 32600 states and 44857 transitions. [2021-12-16 02:34:28,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:34:28,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 184 [2021-12-16 02:34:28,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:28,065 INFO L225 Difference]: With dead ends: 32600 [2021-12-16 02:34:28,065 INFO L226 Difference]: Without dead ends: 18794 [2021-12-16 02:34:28,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:28,094 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 305 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:28,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 399 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:34:28,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18794 states. [2021-12-16 02:34:28,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18794 to 15709. [2021-12-16 02:34:28,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15709 states, 13313 states have (on average 1.3142041613460527) internal successors, (17496), 13426 states have internal predecessors, (17496), 1320 states have call successors, (1320), 931 states have call predecessors, (1320), 1074 states have return successors, (1686), 1354 states have call predecessors, (1686), 1318 states have call successors, (1686) [2021-12-16 02:34:28,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15709 states to 15709 states and 20502 transitions. [2021-12-16 02:34:28,951 INFO L78 Accepts]: Start accepts. Automaton has 15709 states and 20502 transitions. Word has length 184 [2021-12-16 02:34:28,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:28,951 INFO L470 AbstractCegarLoop]: Abstraction has 15709 states and 20502 transitions. [2021-12-16 02:34:28,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-16 02:34:28,951 INFO L276 IsEmpty]: Start isEmpty. Operand 15709 states and 20502 transitions. [2021-12-16 02:34:28,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-16 02:34:28,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:28,959 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:28,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-16 02:34:29,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:34:29,177 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:29,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:29,177 INFO L85 PathProgramCache]: Analyzing trace with hash 790542911, now seen corresponding path program 1 times [2021-12-16 02:34:29,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:29,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047110432] [2021-12-16 02:34:29,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:29,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:29,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:29,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:34:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:29,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:34:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:29,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:34:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:29,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:29,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 02:34:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:29,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 02:34:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:29,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-16 02:34:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:29,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-16 02:34:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:29,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-16 02:34:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:29,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-16 02:34:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:29,261 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-16 02:34:29,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:29,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047110432] [2021-12-16 02:34:29,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047110432] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:34:29,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825362044] [2021-12-16 02:34:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:29,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:34:29,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:34:29,263 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 02:34:29,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 02:34:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:29,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 02:34:29,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:34:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-16 02:34:29,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:34:29,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825362044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:29,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 02:34:29,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-16 02:34:29,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425053655] [2021-12-16 02:34:29,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:29,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:34:29,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:29,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:34:29,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:29,577 INFO L87 Difference]: Start difference. First operand 15709 states and 20502 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-16 02:34:30,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:30,402 INFO L93 Difference]: Finished difference Result 28603 states and 37555 transitions. [2021-12-16 02:34:30,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:34:30,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 184 [2021-12-16 02:34:30,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:30,439 INFO L225 Difference]: With dead ends: 28603 [2021-12-16 02:34:30,440 INFO L226 Difference]: Without dead ends: 16877 [2021-12-16 02:34:30,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:30,455 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 331 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:30,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 573 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:34:30,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16877 states. [2021-12-16 02:34:31,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16877 to 16558. [2021-12-16 02:34:31,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16558 states, 14111 states have (on average 1.290270002126001) internal successors, (18207), 14215 states have internal predecessors, (18207), 1320 states have call successors, (1320), 977 states have call predecessors, (1320), 1125 states have return successors, (1676), 1368 states have call predecessors, (1676), 1318 states have call successors, (1676) [2021-12-16 02:34:31,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16558 states to 16558 states and 21203 transitions. [2021-12-16 02:34:31,527 INFO L78 Accepts]: Start accepts. Automaton has 16558 states and 21203 transitions. Word has length 184 [2021-12-16 02:34:31,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:31,528 INFO L470 AbstractCegarLoop]: Abstraction has 16558 states and 21203 transitions. [2021-12-16 02:34:31,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-16 02:34:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 16558 states and 21203 transitions. [2021-12-16 02:34:31,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-16 02:34:31,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:31,536 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:31,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-16 02:34:31,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-16 02:34:31,740 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:31,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:31,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1892049836, now seen corresponding path program 1 times [2021-12-16 02:34:31,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:31,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892160364] [2021-12-16 02:34:31,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:31,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 02:34:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 02:34:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 02:34:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 02:34:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 02:34:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 02:34:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 02:34:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 02:34:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-16 02:34:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 02:34:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:34:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-16 02:34:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-16 02:34:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-12-16 02:34:31,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:31,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892160364] [2021-12-16 02:34:31,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892160364] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:34:31,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540412640] [2021-12-16 02:34:31,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:31,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:34:31,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:34:31,855 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 02:34:31,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-16 02:34:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 02:34:31,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:34:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-16 02:34:32,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:34:32,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540412640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:32,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 02:34:32,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2021-12-16 02:34:32,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50211132] [2021-12-16 02:34:32,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:32,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:34:32,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:32,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:34:32,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:34:32,234 INFO L87 Difference]: Start difference. First operand 16558 states and 21203 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-16 02:34:33,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:33,313 INFO L93 Difference]: Finished difference Result 24478 states and 30811 transitions. [2021-12-16 02:34:33,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:34:33,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 195 [2021-12-16 02:34:33,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:33,361 INFO L225 Difference]: With dead ends: 24478 [2021-12-16 02:34:33,361 INFO L226 Difference]: Without dead ends: 20518 [2021-12-16 02:34:33,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:34:33,377 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 52 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:33,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 711 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:34:33,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20518 states. [2021-12-16 02:34:34,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20518 to 20508. [2021-12-16 02:34:34,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20508 states, 17189 states have (on average 1.2745360404910118) internal successors, (21908), 17340 states have internal predecessors, (21908), 1762 states have call successors, (1762), 1299 states have call predecessors, (1762), 1555 states have return successors, (2283), 1871 states have call predecessors, (2283), 1760 states have call successors, (2283) [2021-12-16 02:34:34,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20508 states to 20508 states and 25953 transitions. [2021-12-16 02:34:34,346 INFO L78 Accepts]: Start accepts. Automaton has 20508 states and 25953 transitions. Word has length 195 [2021-12-16 02:34:34,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:34,346 INFO L470 AbstractCegarLoop]: Abstraction has 20508 states and 25953 transitions. [2021-12-16 02:34:34,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-16 02:34:34,347 INFO L276 IsEmpty]: Start isEmpty. Operand 20508 states and 25953 transitions. [2021-12-16 02:34:34,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-16 02:34:34,355 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:34,355 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:34,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-16 02:34:34,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-16 02:34:34,560 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:34,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:34,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1505524182, now seen corresponding path program 1 times [2021-12-16 02:34:34,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:34,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136602481] [2021-12-16 02:34:34,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:34,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 02:34:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 02:34:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 02:34:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 02:34:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 02:34:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 02:34:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 02:34:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-16 02:34:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-16 02:34:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-16 02:34:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:34:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-16 02:34:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-16 02:34:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,654 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-12-16 02:34:34,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:34,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136602481] [2021-12-16 02:34:34,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136602481] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:34:34,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103173336] [2021-12-16 02:34:34,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:34,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:34:34,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:34:34,656 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 02:34:34,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-16 02:34:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:34,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 02:34:34,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:34:35,040 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-16 02:34:35,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:34:35,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103173336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:35,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 02:34:35,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2021-12-16 02:34:35,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141011597] [2021-12-16 02:34:35,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:35,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:34:35,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:35,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:34:35,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:34:35,043 INFO L87 Difference]: Start difference. First operand 20508 states and 25953 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-16 02:34:35,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:35,911 INFO L93 Difference]: Finished difference Result 27014 states and 34145 transitions. [2021-12-16 02:34:35,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:34:35,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 195 [2021-12-16 02:34:35,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:35,948 INFO L225 Difference]: With dead ends: 27014 [2021-12-16 02:34:35,948 INFO L226 Difference]: Without dead ends: 12589 [2021-12-16 02:34:35,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:34:35,978 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 240 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:35,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 344 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:34:35,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12589 states. [2021-12-16 02:34:36,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12589 to 12589. [2021-12-16 02:34:36,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12589 states, 11021 states have (on average 1.3109518192541512) internal successors, (14448), 11075 states have internal predecessors, (14448), 872 states have call successors, (872), 654 states have call predecessors, (872), 695 states have return successors, (1065), 861 states have call predecessors, (1065), 872 states have call successors, (1065) [2021-12-16 02:34:36,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12589 states to 12589 states and 16385 transitions. [2021-12-16 02:34:36,653 INFO L78 Accepts]: Start accepts. Automaton has 12589 states and 16385 transitions. Word has length 195 [2021-12-16 02:34:36,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:36,654 INFO L470 AbstractCegarLoop]: Abstraction has 12589 states and 16385 transitions. [2021-12-16 02:34:36,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-16 02:34:36,654 INFO L276 IsEmpty]: Start isEmpty. Operand 12589 states and 16385 transitions. [2021-12-16 02:34:36,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-16 02:34:36,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:36,663 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:36,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-16 02:34:36,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:34:36,863 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:36,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:36,864 INFO L85 PathProgramCache]: Analyzing trace with hash -761983899, now seen corresponding path program 1 times [2021-12-16 02:34:36,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:36,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440696888] [2021-12-16 02:34:36,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:36,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:36,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:36,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:34:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:36,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:34:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:36,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:34:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:36,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:36,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 02:34:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:36,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-16 02:34:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:36,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-16 02:34:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:36,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-16 02:34:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:36,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-16 02:34:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:36,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-16 02:34:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:36,954 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-16 02:34:36,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:36,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440696888] [2021-12-16 02:34:36,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440696888] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:34:36,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308519476] [2021-12-16 02:34:36,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:36,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:34:36,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:34:36,956 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 02:34:36,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-16 02:34:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:37,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 02:34:37,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:34:37,240 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-16 02:34:37,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:34:37,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308519476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:37,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 02:34:37,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-16 02:34:37,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858405583] [2021-12-16 02:34:37,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:37,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:34:37,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:37,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:34:37,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:37,242 INFO L87 Difference]: Start difference. First operand 12589 states and 16385 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-16 02:34:38,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:38,260 INFO L93 Difference]: Finished difference Result 35786 states and 47052 transitions. [2021-12-16 02:34:38,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:34:38,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 185 [2021-12-16 02:34:38,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:38,323 INFO L225 Difference]: With dead ends: 35786 [2021-12-16 02:34:38,323 INFO L226 Difference]: Without dead ends: 23211 [2021-12-16 02:34:38,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:38,352 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 172 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:38,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 612 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:34:38,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23211 states. [2021-12-16 02:34:39,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23211 to 23209. [2021-12-16 02:34:39,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23209 states, 20251 states have (on average 1.3083798330946619) internal successors, (26496), 20359 states have internal predecessors, (26496), 1655 states have call successors, (1655), 1220 states have call predecessors, (1655), 1302 states have return successors, (2378), 1633 states have call predecessors, (2378), 1655 states have call successors, (2378) [2021-12-16 02:34:39,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23209 states to 23209 states and 30529 transitions. [2021-12-16 02:34:39,620 INFO L78 Accepts]: Start accepts. Automaton has 23209 states and 30529 transitions. Word has length 185 [2021-12-16 02:34:39,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:39,620 INFO L470 AbstractCegarLoop]: Abstraction has 23209 states and 30529 transitions. [2021-12-16 02:34:39,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-16 02:34:39,620 INFO L276 IsEmpty]: Start isEmpty. Operand 23209 states and 30529 transitions. [2021-12-16 02:34:39,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-16 02:34:39,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:39,633 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:39,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-16 02:34:39,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-12-16 02:34:39,835 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:39,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:39,836 INFO L85 PathProgramCache]: Analyzing trace with hash -148145425, now seen corresponding path program 1 times [2021-12-16 02:34:39,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:39,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282780553] [2021-12-16 02:34:39,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:39,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:39,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:39,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:34:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:39,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:34:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:39,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:34:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:39,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:39,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 02:34:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:39,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 02:34:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:39,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-16 02:34:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:39,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-16 02:34:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:39,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-16 02:34:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:39,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-16 02:34:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:39,917 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-12-16 02:34:39,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:39,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282780553] [2021-12-16 02:34:39,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282780553] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:34:39,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413989211] [2021-12-16 02:34:39,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:39,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:34:39,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:34:39,918 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 02:34:39,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-16 02:34:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:40,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 02:34:40,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:34:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-16 02:34:40,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:34:40,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413989211] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:40,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 02:34:40,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-16 02:34:40,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496776576] [2021-12-16 02:34:40,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:40,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:34:40,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:40,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:34:40,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:40,228 INFO L87 Difference]: Start difference. First operand 23209 states and 30529 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-16 02:34:42,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:42,388 INFO L93 Difference]: Finished difference Result 68821 states and 91662 transitions. [2021-12-16 02:34:42,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:34:42,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 185 [2021-12-16 02:34:42,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:42,524 INFO L225 Difference]: With dead ends: 68821 [2021-12-16 02:34:42,524 INFO L226 Difference]: Without dead ends: 45630 [2021-12-16 02:34:42,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:42,571 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 167 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:42,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 467 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:34:42,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45630 states. [2021-12-16 02:34:44,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45630 to 45268. [2021-12-16 02:34:44,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45268 states, 39568 states have (on average 1.3000657096643753) internal successors, (51441), 39784 states have internal predecessors, (51441), 3173 states have call successors, (3173), 2372 states have call predecessors, (3173), 2526 states have return successors, (5818), 3119 states have call predecessors, (5818), 3173 states have call successors, (5818) [2021-12-16 02:34:45,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45268 states to 45268 states and 60432 transitions. [2021-12-16 02:34:45,033 INFO L78 Accepts]: Start accepts. Automaton has 45268 states and 60432 transitions. Word has length 185 [2021-12-16 02:34:45,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:45,034 INFO L470 AbstractCegarLoop]: Abstraction has 45268 states and 60432 transitions. [2021-12-16 02:34:45,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-16 02:34:45,034 INFO L276 IsEmpty]: Start isEmpty. Operand 45268 states and 60432 transitions. [2021-12-16 02:34:45,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-16 02:34:45,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:45,059 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:45,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-16 02:34:45,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-12-16 02:34:45,275 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:45,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:45,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1717371087, now seen corresponding path program 1 times [2021-12-16 02:34:45,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:45,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883790896] [2021-12-16 02:34:45,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:45,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:45,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:45,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:34:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:45,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:34:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:45,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:34:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:45,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:45,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 02:34:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:45,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 02:34:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:45,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-16 02:34:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:45,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-16 02:34:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:45,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-16 02:34:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:45,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-16 02:34:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:45,342 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-12-16 02:34:45,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:45,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883790896] [2021-12-16 02:34:45,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883790896] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:45,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:45,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 02:34:45,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096016178] [2021-12-16 02:34:45,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:45,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 02:34:45,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:45,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 02:34:45,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:34:45,344 INFO L87 Difference]: Start difference. First operand 45268 states and 60432 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-16 02:34:47,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:47,844 INFO L93 Difference]: Finished difference Result 89780 states and 119543 transitions. [2021-12-16 02:34:47,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:34:47,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 185 [2021-12-16 02:34:47,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:47,973 INFO L225 Difference]: With dead ends: 89780 [2021-12-16 02:34:47,973 INFO L226 Difference]: Without dead ends: 44528 [2021-12-16 02:34:48,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:48,059 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 374 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:48,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 373 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 02:34:48,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44528 states. [2021-12-16 02:34:50,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44528 to 39190. [2021-12-16 02:34:50,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39190 states, 34339 states have (on average 1.298086723550482) internal successors, (44575), 34824 states have internal predecessors, (44575), 2405 states have call successors, (2405), 1790 states have call predecessors, (2405), 2445 states have return successors, (5041), 2579 states have call predecessors, (5041), 2405 states have call successors, (5041) [2021-12-16 02:34:50,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39190 states to 39190 states and 52021 transitions. [2021-12-16 02:34:50,557 INFO L78 Accepts]: Start accepts. Automaton has 39190 states and 52021 transitions. Word has length 185 [2021-12-16 02:34:50,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:50,557 INFO L470 AbstractCegarLoop]: Abstraction has 39190 states and 52021 transitions. [2021-12-16 02:34:50,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-16 02:34:50,557 INFO L276 IsEmpty]: Start isEmpty. Operand 39190 states and 52021 transitions. [2021-12-16 02:34:50,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-16 02:34:50,578 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:50,578 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:34:50,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-16 02:34:50,579 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:50,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:50,579 INFO L85 PathProgramCache]: Analyzing trace with hash 829371681, now seen corresponding path program 1 times [2021-12-16 02:34:50,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:50,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003245413] [2021-12-16 02:34:50,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:50,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:50,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:50,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 02:34:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:50,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-16 02:34:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:50,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 02:34:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:50,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:50,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 02:34:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:50,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 02:34:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:50,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-16 02:34:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:50,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 02:34:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:50,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-16 02:34:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:50,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-16 02:34:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-12-16 02:34:50,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:50,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003245413] [2021-12-16 02:34:50,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003245413] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 02:34:50,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376722515] [2021-12-16 02:34:50,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:50,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 02:34:50,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:34:50,667 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 02:34:50,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-16 02:34:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:50,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 02:34:50,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:34:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-16 02:34:50,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:34:50,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376722515] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:50,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 02:34:50,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-16 02:34:50,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696035835] [2021-12-16 02:34:50,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:50,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 02:34:50,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:50,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 02:34:50,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:50,954 INFO L87 Difference]: Start difference. First operand 39190 states and 52021 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-16 02:34:54,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:54,017 INFO L93 Difference]: Finished difference Result 94179 states and 126314 transitions. [2021-12-16 02:34:54,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 02:34:54,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 187 [2021-12-16 02:34:54,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:54,198 INFO L225 Difference]: With dead ends: 94179 [2021-12-16 02:34:54,198 INFO L226 Difference]: Without dead ends: 55007 [2021-12-16 02:34:54,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:54,285 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 174 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:54,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 422 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]