./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+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_2.cil-1+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 4c3aab1156afcb98b97b027e9b66004d54025f3b89e95d6d35dc2e84fdb640d2 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 21:04:36,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 21:04:36,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 21:04:36,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 21:04:36,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 21:04:36,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 21:04:36,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 21:04:36,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 21:04:36,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 21:04:36,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 21:04:36,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 21:04:36,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 21:04:36,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 21:04:36,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 21:04:36,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 21:04:36,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 21:04:36,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 21:04:36,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 21:04:36,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 21:04:36,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 21:04:36,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 21:04:36,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 21:04:36,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 21:04:36,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 21:04:36,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 21:04:36,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 21:04:36,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 21:04:36,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 21:04:36,776 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 21:04:36,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 21:04:36,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 21:04:36,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 21:04:36,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 21:04:36,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 21:04:36,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 21:04:36,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 21:04:36,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 21:04:36,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 21:04:36,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 21:04:36,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 21:04:36,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 21:04:36,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 21:04:36,802 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 21:04:36,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 21:04:36,803 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 21:04:36,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 21:04:36,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 21:04:36,804 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 21:04:36,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 21:04:36,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 21:04:36,805 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 21:04:36,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 21:04:36,806 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 21:04:36,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 21:04:36,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 21:04:36,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 21:04:36,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 21:04:36,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 21:04:36,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 21:04:36,807 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 21:04:36,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 21:04:36,807 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 21:04:36,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 21:04:36,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 21:04:36,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 21:04:36,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 21:04:36,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 21:04:36,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 21:04:36,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 21:04:36,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 21:04:36,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 21:04:36,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 21:04:36,809 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 21:04:36,809 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 21:04:36,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 21:04:36,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 21:04:36,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c3aab1156afcb98b97b027e9b66004d54025f3b89e95d6d35dc2e84fdb640d2 [2021-12-17 21:04:37,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 21:04:37,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 21:04:37,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 21:04:37,045 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 21:04:37,046 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 21:04:37,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c [2021-12-17 21:04:37,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40f057b7d/a323587c9dd84485be198e2308f79371/FLAG07f03d756 [2021-12-17 21:04:37,472 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 21:04:37,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c [2021-12-17 21:04:37,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40f057b7d/a323587c9dd84485be198e2308f79371/FLAG07f03d756 [2021-12-17 21:04:37,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40f057b7d/a323587c9dd84485be198e2308f79371 [2021-12-17 21:04:37,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 21:04:37,870 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 21:04:37,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 21:04:37,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 21:04:37,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 21:04:37,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:04:37" (1/1) ... [2021-12-17 21:04:37,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88b3480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:04:37, skipping insertion in model container [2021-12-17 21:04:37,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:04:37" (1/1) ... [2021-12-17 21:04:37,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 21:04:37,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 21:04:38,082 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_2.cil-1+token_ring.03.cil-2.c[914,927] [2021-12-17 21:04:38,148 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_2.cil-1+token_ring.03.cil-2.c[7115,7128] [2021-12-17 21:04:38,187 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 21:04:38,196 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 21:04:38,208 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_2.cil-1+token_ring.03.cil-2.c[914,927] [2021-12-17 21:04:38,228 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_2.cil-1+token_ring.03.cil-2.c[7115,7128] [2021-12-17 21:04:38,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 21:04:38,275 INFO L208 MainTranslator]: Completed translation [2021-12-17 21:04:38,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:04:38 WrapperNode [2021-12-17 21:04:38,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 21:04:38,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 21:04:38,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 21:04:38,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 21:04:38,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:04:38" (1/1) ... [2021-12-17 21:04:38,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:04:38" (1/1) ... [2021-12-17 21:04:38,340 INFO L137 Inliner]: procedures = 59, calls = 66, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 518 [2021-12-17 21:04:38,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 21:04:38,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 21:04:38,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 21:04:38,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 21:04:38,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:04:38" (1/1) ... [2021-12-17 21:04:38,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:04:38" (1/1) ... [2021-12-17 21:04:38,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:04:38" (1/1) ... [2021-12-17 21:04:38,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:04:38" (1/1) ... [2021-12-17 21:04:38,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:04:38" (1/1) ... [2021-12-17 21:04:38,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:04:38" (1/1) ... [2021-12-17 21:04:38,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:04:38" (1/1) ... [2021-12-17 21:04:38,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 21:04:38,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 21:04:38,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 21:04:38,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 21:04:38,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:04:38" (1/1) ... [2021-12-17 21:04:38,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 21:04:38,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:04:38,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 21:04:38,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 21:04:38,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 21:04:38,454 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 21:04:38,455 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 21:04:38,455 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-17 21:04:38,456 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-17 21:04:38,456 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-17 21:04:38,456 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-17 21:04:38,456 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-17 21:04:38,456 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-17 21:04:38,456 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-17 21:04:38,457 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-17 21:04:38,457 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-17 21:04:38,457 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-17 21:04:38,457 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-17 21:04:38,457 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-17 21:04:38,457 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-17 21:04:38,457 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-17 21:04:38,457 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-17 21:04:38,458 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-17 21:04:38,458 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-17 21:04:38,458 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-17 21:04:38,458 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-17 21:04:38,458 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-17 21:04:38,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 21:04:38,458 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-17 21:04:38,458 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-17 21:04:38,459 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-17 21:04:38,459 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-17 21:04:38,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 21:04:38,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 21:04:38,459 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-17 21:04:38,459 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-17 21:04:38,527 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 21:04:38,529 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 21:04:38,901 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 21:04:38,908 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 21:04:38,908 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-17 21:04:38,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:04:38 BoogieIcfgContainer [2021-12-17 21:04:38,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 21:04:38,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 21:04:38,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 21:04:38,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 21:04:38,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 09:04:37" (1/3) ... [2021-12-17 21:04:38,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f08cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:04:38, skipping insertion in model container [2021-12-17 21:04:38,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:04:38" (2/3) ... [2021-12-17 21:04:38,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f08cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:04:38, skipping insertion in model container [2021-12-17 21:04:38,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:04:38" (3/3) ... [2021-12-17 21:04:38,916 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.03.cil-2.c [2021-12-17 21:04:38,919 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 21:04:38,920 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 21:04:38,952 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 21:04:38,956 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 21:04:38,957 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 21:04:38,974 INFO L276 IsEmpty]: Start isEmpty. Operand has 258 states, 210 states have (on average 1.5714285714285714) internal successors, (330), 216 states have internal predecessors, (330), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-17 21:04:38,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:04:38,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:38,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:04:38,982 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:38,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:38,986 INFO L85 PathProgramCache]: Analyzing trace with hash 2111945575, now seen corresponding path program 1 times [2021-12-17 21:04:38,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:38,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990246534] [2021-12-17 21:04:38,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:38,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:39,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:39,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:04:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:39,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:04:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:39,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:04:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:39,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:04:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:39,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:04:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:39,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:04:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:39,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:39,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990246534] [2021-12-17 21:04:39,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990246534] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:04:39,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:04:39,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 21:04:39,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064047819] [2021-12-17 21:04:39,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:04:39,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 21:04:39,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:39,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 21:04:39,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:04:39,360 INFO L87 Difference]: Start difference. First operand has 258 states, 210 states have (on average 1.5714285714285714) internal successors, (330), 216 states have internal predecessors, (330), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) 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) [2021-12-17 21:04:40,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:04:40,033 INFO L93 Difference]: Finished difference Result 632 states and 960 transitions. [2021-12-17 21:04:40,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:04:40,035 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 [2021-12-17 21:04:40,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:04:40,044 INFO L225 Difference]: With dead ends: 632 [2021-12-17 21:04:40,045 INFO L226 Difference]: Without dead ends: 383 [2021-12-17 21:04:40,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-12-17 21:04:40,051 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 678 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 21:04:40,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 1257 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 21:04:40,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-12-17 21:04:40,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 344. [2021-12-17 21:04:40,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 278 states have (on average 1.4496402877697843) internal successors, (403), 284 states have internal predecessors, (403), 42 states have call successors, (42), 21 states have call predecessors, (42), 22 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2021-12-17 21:04:40,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 490 transitions. [2021-12-17 21:04:40,101 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 490 transitions. Word has length 65 [2021-12-17 21:04:40,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:04:40,101 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 490 transitions. [2021-12-17 21:04:40,101 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) [2021-12-17 21:04:40,102 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 490 transitions. [2021-12-17 21:04:40,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:04:40,104 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:40,105 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] [2021-12-17 21:04:40,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 21:04:40,105 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:40,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:40,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1779235770, now seen corresponding path program 1 times [2021-12-17 21:04:40,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:40,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256084157] [2021-12-17 21:04:40,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:40,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:40,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:40,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:04:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:40,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:04:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:40,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:04:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:40,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:04:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:40,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:04:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:40,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:04:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:40,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:40,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:40,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256084157] [2021-12-17 21:04:40,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256084157] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:04:40,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:04:40,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 21:04:40,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585837767] [2021-12-17 21:04:40,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:04:40,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 21:04:40,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:40,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 21:04:40,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:04:40,261 INFO L87 Difference]: Start difference. First operand 344 states and 490 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) [2021-12-17 21:04:40,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:04:40,918 INFO L93 Difference]: Finished difference Result 691 states and 967 transitions. [2021-12-17 21:04:40,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 21:04:40,919 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 [2021-12-17 21:04:40,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:04:40,923 INFO L225 Difference]: With dead ends: 691 [2021-12-17 21:04:40,923 INFO L226 Difference]: Without dead ends: 514 [2021-12-17 21:04:40,924 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 [2021-12-17 21:04:40,925 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 726 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 21:04:40,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [747 Valid, 1288 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 21:04:40,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-12-17 21:04:40,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 440. [2021-12-17 21:04:40,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 354 states have (on average 1.4322033898305084) internal successors, (507), 362 states have internal predecessors, (507), 53 states have call successors, (53), 28 states have call predecessors, (53), 31 states have return successors, (64), 53 states have call predecessors, (64), 51 states have call successors, (64) [2021-12-17 21:04:40,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 624 transitions. [2021-12-17 21:04:40,949 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 624 transitions. Word has length 65 [2021-12-17 21:04:40,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:04:40,950 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 624 transitions. [2021-12-17 21:04:40,950 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) [2021-12-17 21:04:40,950 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 624 transitions. [2021-12-17 21:04:40,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:04:40,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:40,952 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] [2021-12-17 21:04:40,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 21:04:40,953 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:40,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:40,953 INFO L85 PathProgramCache]: Analyzing trace with hash 487145416, now seen corresponding path program 1 times [2021-12-17 21:04:40,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:40,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464432428] [2021-12-17 21:04:40,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:40,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:40,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:40,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:04:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:40,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:04:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:41,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:04:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:41,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:04:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:41,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:04:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:41,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:04:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:41,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:41,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464432428] [2021-12-17 21:04:41,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464432428] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:04:41,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:04:41,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 21:04:41,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720209772] [2021-12-17 21:04:41,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:04:41,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 21:04:41,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:41,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 21:04:41,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-17 21:04:41,068 INFO L87 Difference]: Start difference. First operand 440 states and 624 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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) [2021-12-17 21:04:41,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:04:41,579 INFO L93 Difference]: Finished difference Result 741 states and 1038 transitions. [2021-12-17 21:04:41,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 21:04:41,580 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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 65 [2021-12-17 21:04:41,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:04:41,582 INFO L225 Difference]: With dead ends: 741 [2021-12-17 21:04:41,582 INFO L226 Difference]: Without dead ends: 474 [2021-12-17 21:04:41,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 21:04:41,584 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 429 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 21:04:41,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 1525 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 21:04:41,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-12-17 21:04:41,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 445. [2021-12-17 21:04:41,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 358 states have (on average 1.4217877094972067) internal successors, (509), 366 states have internal predecessors, (509), 53 states have call successors, (53), 28 states have call predecessors, (53), 32 states have return successors, (65), 54 states have call predecessors, (65), 51 states have call successors, (65) [2021-12-17 21:04:41,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 627 transitions. [2021-12-17 21:04:41,604 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 627 transitions. Word has length 65 [2021-12-17 21:04:41,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:04:41,604 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 627 transitions. [2021-12-17 21:04:41,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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) [2021-12-17 21:04:41,605 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 627 transitions. [2021-12-17 21:04:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:04:41,613 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:41,613 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] [2021-12-17 21:04:41,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 21:04:41,613 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:41,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:41,615 INFO L85 PathProgramCache]: Analyzing trace with hash -542213882, now seen corresponding path program 1 times [2021-12-17 21:04:41,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:41,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701398309] [2021-12-17 21:04:41,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:41,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:41,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:41,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:04:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:41,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:04:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:41,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:04:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:41,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:04:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:41,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:04:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:41,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:04:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:41,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:41,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701398309] [2021-12-17 21:04:41,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701398309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:04:41,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:04:41,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 21:04:41,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019395951] [2021-12-17 21:04:41,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:04:41,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 21:04:41,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:41,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 21:04:41,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-17 21:04:41,718 INFO L87 Difference]: Start difference. First operand 445 states and 627 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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) [2021-12-17 21:04:42,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:04:42,232 INFO L93 Difference]: Finished difference Result 763 states and 1060 transitions. [2021-12-17 21:04:42,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 21:04:42,233 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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 65 [2021-12-17 21:04:42,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:04:42,235 INFO L225 Difference]: With dead ends: 763 [2021-12-17 21:04:42,235 INFO L226 Difference]: Without dead ends: 491 [2021-12-17 21:04:42,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-17 21:04:42,237 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 430 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 21:04:42,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 1512 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 21:04:42,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-12-17 21:04:42,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 460. [2021-12-17 21:04:42,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 370 states have (on average 1.4081081081081082) internal successors, (521), 378 states have internal predecessors, (521), 53 states have call successors, (53), 28 states have call predecessors, (53), 35 states have return successors, (68), 57 states have call predecessors, (68), 51 states have call successors, (68) [2021-12-17 21:04:42,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 642 transitions. [2021-12-17 21:04:42,255 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 642 transitions. Word has length 65 [2021-12-17 21:04:42,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:04:42,255 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 642 transitions. [2021-12-17 21:04:42,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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) [2021-12-17 21:04:42,256 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 642 transitions. [2021-12-17 21:04:42,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:04:42,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:42,257 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] [2021-12-17 21:04:42,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 21:04:42,257 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:42,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:42,258 INFO L85 PathProgramCache]: Analyzing trace with hash 843989512, now seen corresponding path program 1 times [2021-12-17 21:04:42,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:42,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592893400] [2021-12-17 21:04:42,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:42,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:42,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:42,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:04:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:42,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:04:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:42,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:04:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:42,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:04:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:42,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:04:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:42,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:04:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:42,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:42,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:42,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592893400] [2021-12-17 21:04:42,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592893400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:04:42,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:04:42,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:04:42,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955305236] [2021-12-17 21:04:42,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:04:42,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:04:42,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:42,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:04:42,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:04:42,323 INFO L87 Difference]: Start difference. First operand 460 states and 642 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 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) [2021-12-17 21:04:42,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:04:42,651 INFO L93 Difference]: Finished difference Result 1074 states and 1461 transitions. [2021-12-17 21:04:42,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 21:04:42,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 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 [2021-12-17 21:04:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:04:42,655 INFO L225 Difference]: With dead ends: 1074 [2021-12-17 21:04:42,655 INFO L226 Difference]: Without dead ends: 790 [2021-12-17 21:04:42,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-17 21:04:42,657 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 680 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 21:04:42,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 990 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 21:04:42,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-12-17 21:04:42,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 738. [2021-12-17 21:04:42,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 584 states have (on average 1.3664383561643836) internal successors, (798), 599 states have internal predecessors, (798), 87 states have call successors, (87), 49 states have call predecessors, (87), 65 states have return successors, (126), 96 states have call predecessors, (126), 85 states have call successors, (126) [2021-12-17 21:04:42,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1011 transitions. [2021-12-17 21:04:42,707 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1011 transitions. Word has length 65 [2021-12-17 21:04:42,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:04:42,707 INFO L470 AbstractCegarLoop]: Abstraction has 738 states and 1011 transitions. [2021-12-17 21:04:42,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 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) [2021-12-17 21:04:42,707 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1011 transitions. [2021-12-17 21:04:42,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 21:04:42,709 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:42,709 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] [2021-12-17 21:04:42,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 21:04:42,710 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:42,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:42,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1077063563, now seen corresponding path program 1 times [2021-12-17 21:04:42,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:42,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488357693] [2021-12-17 21:04:42,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:42,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:42,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:42,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:04:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:42,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:04:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:42,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:04:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:42,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:04:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:42,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:04:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:42,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:04:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:42,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:42,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:42,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488357693] [2021-12-17 21:04:42,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488357693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:04:42,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:04:42,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 21:04:42,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316648158] [2021-12-17 21:04:42,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:04:42,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:04:42,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:42,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:04:42,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:04:42,774 INFO L87 Difference]: Start difference. First operand 738 states and 1011 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:04:43,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:04:43,085 INFO L93 Difference]: Finished difference Result 1885 states and 2528 transitions. [2021-12-17 21:04:43,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 21:04:43,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2021-12-17 21:04:43,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:04:43,091 INFO L225 Difference]: With dead ends: 1885 [2021-12-17 21:04:43,091 INFO L226 Difference]: Without dead ends: 1302 [2021-12-17 21:04:43,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-17 21:04:43,093 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 650 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 21:04:43,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 833 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 21:04:43,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2021-12-17 21:04:43,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1195. [2021-12-17 21:04:43,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 943 states have (on average 1.335100742311771) internal successors, (1259), 961 states have internal predecessors, (1259), 130 states have call successors, (130), 91 states have call predecessors, (130), 120 states have return successors, (194), 149 states have call predecessors, (194), 128 states have call successors, (194) [2021-12-17 21:04:43,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1583 transitions. [2021-12-17 21:04:43,129 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1583 transitions. Word has length 66 [2021-12-17 21:04:43,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:04:43,129 INFO L470 AbstractCegarLoop]: Abstraction has 1195 states and 1583 transitions. [2021-12-17 21:04:43,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:04:43,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1583 transitions. [2021-12-17 21:04:43,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 21:04:43,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:43,131 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] [2021-12-17 21:04:43,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 21:04:43,131 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:43,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:43,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1759664074, now seen corresponding path program 1 times [2021-12-17 21:04:43,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:43,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117904686] [2021-12-17 21:04:43,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:43,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:43,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:43,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:04:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:43,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:04:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:43,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:04:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:43,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:04:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:43,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:04:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:43,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:04:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:43,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:43,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:43,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117904686] [2021-12-17 21:04:43,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117904686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:04:43,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:04:43,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 21:04:43,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911790296] [2021-12-17 21:04:43,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:04:43,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:04:43,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:43,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:04:43,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:04:43,210 INFO L87 Difference]: Start difference. First operand 1195 states and 1583 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:04:43,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:04:43,490 INFO L93 Difference]: Finished difference Result 3275 states and 4283 transitions. [2021-12-17 21:04:43,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 21:04:43,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2021-12-17 21:04:43,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:04:43,499 INFO L225 Difference]: With dead ends: 3275 [2021-12-17 21:04:43,499 INFO L226 Difference]: Without dead ends: 2255 [2021-12-17 21:04:43,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-17 21:04:43,502 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 858 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 21:04:43,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [883 Valid, 705 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 21:04:43,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2021-12-17 21:04:43,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2065. [2021-12-17 21:04:43,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2065 states, 1613 states have (on average 1.2982021078735275) internal successors, (2094), 1645 states have internal predecessors, (2094), 228 states have call successors, (228), 175 states have call predecessors, (228), 222 states have return successors, (338), 251 states have call predecessors, (338), 226 states have call successors, (338) [2021-12-17 21:04:43,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 2660 transitions. [2021-12-17 21:04:43,570 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 2660 transitions. Word has length 66 [2021-12-17 21:04:43,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:04:43,571 INFO L470 AbstractCegarLoop]: Abstraction has 2065 states and 2660 transitions. [2021-12-17 21:04:43,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:04:43,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 2660 transitions. [2021-12-17 21:04:43,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-17 21:04:43,572 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:43,572 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] [2021-12-17 21:04:43,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 21:04:43,573 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:43,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:43,573 INFO L85 PathProgramCache]: Analyzing trace with hash 825996842, now seen corresponding path program 1 times [2021-12-17 21:04:43,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:43,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32446686] [2021-12-17 21:04:43,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:43,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:43,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:43,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:04:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:43,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:04:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:43,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:04:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:43,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:04:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:43,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:04:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:43,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:04:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:43,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:43,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32446686] [2021-12-17 21:04:43,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32446686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:04:43,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:04:43,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 21:04:43,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007915426] [2021-12-17 21:04:43,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:04:43,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:04:43,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:43,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:04:43,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:04:43,626 INFO L87 Difference]: Start difference. First operand 2065 states and 2660 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:04:43,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:04:43,944 INFO L93 Difference]: Finished difference Result 4911 states and 6260 transitions. [2021-12-17 21:04:43,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 21:04:43,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2021-12-17 21:04:43,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:04:43,958 INFO L225 Difference]: With dead ends: 4911 [2021-12-17 21:04:43,958 INFO L226 Difference]: Without dead ends: 3021 [2021-12-17 21:04:43,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-17 21:04:43,963 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 666 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 21:04:43,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [691 Valid, 906 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 21:04:43,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2021-12-17 21:04:44,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2801. [2021-12-17 21:04:44,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 2183 states have (on average 1.2835547411818597) internal successors, (2802), 2225 states have internal predecessors, (2802), 308 states have call successors, (308), 245 states have call predecessors, (308), 308 states have return successors, (451), 337 states have call predecessors, (451), 306 states have call successors, (451) [2021-12-17 21:04:44,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3561 transitions. [2021-12-17 21:04:44,086 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3561 transitions. Word has length 72 [2021-12-17 21:04:44,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:04:44,086 INFO L470 AbstractCegarLoop]: Abstraction has 2801 states and 3561 transitions. [2021-12-17 21:04:44,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:04:44,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3561 transitions. [2021-12-17 21:04:44,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-17 21:04:44,088 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:44,088 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:04:44,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 21:04:44,088 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:44,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:44,088 INFO L85 PathProgramCache]: Analyzing trace with hash -680171098, now seen corresponding path program 1 times [2021-12-17 21:04:44,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:44,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770924575] [2021-12-17 21:04:44,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:44,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:44,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:44,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:04:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:44,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:04:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:44,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:04:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:44,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:04:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:44,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:04:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:44,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:04:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:44,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:44,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:44,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770924575] [2021-12-17 21:04:44,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770924575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:04:44,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:04:44,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:04:44,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616313848] [2021-12-17 21:04:44,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:04:44,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:04:44,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:44,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:04:44,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:04:44,147 INFO L87 Difference]: Start difference. First operand 2801 states and 3561 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-17 21:04:44,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:04:44,498 INFO L93 Difference]: Finished difference Result 3527 states and 4444 transitions. [2021-12-17 21:04:44,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 21:04:44,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2021-12-17 21:04:44,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:04:44,513 INFO L225 Difference]: With dead ends: 3527 [2021-12-17 21:04:44,513 INFO L226 Difference]: Without dead ends: 3524 [2021-12-17 21:04:44,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-12-17 21:04:44,515 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 1202 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 21:04:44,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1212 Valid, 711 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 21:04:44,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3524 states. [2021-12-17 21:04:44,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3524 to 3271. [2021-12-17 21:04:44,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3271 states, 2548 states have (on average 1.2770800627943486) internal successors, (3254), 2595 states have internal predecessors, (3254), 356 states have call successors, (356), 287 states have call predecessors, (356), 365 states have return successors, (528), 395 states have call predecessors, (528), 355 states have call successors, (528) [2021-12-17 21:04:44,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3271 states to 3271 states and 4138 transitions. [2021-12-17 21:04:44,632 INFO L78 Accepts]: Start accepts. Automaton has 3271 states and 4138 transitions. Word has length 73 [2021-12-17 21:04:44,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:04:44,632 INFO L470 AbstractCegarLoop]: Abstraction has 3271 states and 4138 transitions. [2021-12-17 21:04:44,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-17 21:04:44,632 INFO L276 IsEmpty]: Start isEmpty. Operand 3271 states and 4138 transitions. [2021-12-17 21:04:44,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-17 21:04:44,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:44,634 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:04:44,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 21:04:44,634 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:44,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:44,634 INFO L85 PathProgramCache]: Analyzing trace with hash 388759028, now seen corresponding path program 1 times [2021-12-17 21:04:44,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:44,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600988488] [2021-12-17 21:04:44,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:44,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:44,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:44,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:04:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:44,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:04:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:44,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:04:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:44,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:04:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:44,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:04:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:44,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:04:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:44,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:44,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600988488] [2021-12-17 21:04:44,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600988488] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 21:04:44,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409540146] [2021-12-17 21:04:44,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:44,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 21:04:44,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:04:44,720 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 21:04:44,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 21:04:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:44,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-17 21:04:44,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 21:04:45,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:45,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 21:04:45,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:45,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409540146] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 21:04:45,395 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 21:04:45,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2021-12-17 21:04:45,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813619485] [2021-12-17 21:04:45,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 21:04:45,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 21:04:45,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:45,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 21:04:45,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 21:04:45,396 INFO L87 Difference]: Start difference. First operand 3271 states and 4138 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-17 21:04:46,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:04:46,547 INFO L93 Difference]: Finished difference Result 7548 states and 9468 transitions. [2021-12-17 21:04:46,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-17 21:04:46,547 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2021-12-17 21:04:46,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:04:46,576 INFO L225 Difference]: With dead ends: 7548 [2021-12-17 21:04:46,576 INFO L226 Difference]: Without dead ends: 7545 [2021-12-17 21:04:46,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2021-12-17 21:04:46,581 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 1209 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 21:04:46,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1273 Valid, 1888 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 21:04:46,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7545 states. [2021-12-17 21:04:46,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7545 to 5017. [2021-12-17 21:04:46,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5017 states, 3914 states have (on average 1.275932549821155) internal successors, (4994), 3985 states have internal predecessors, (4994), 536 states have call successors, (536), 441 states have call predecessors, (536), 565 states have return successors, (806), 597 states have call predecessors, (806), 535 states have call successors, (806) [2021-12-17 21:04:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5017 states to 5017 states and 6336 transitions. [2021-12-17 21:04:46,819 INFO L78 Accepts]: Start accepts. Automaton has 5017 states and 6336 transitions. Word has length 74 [2021-12-17 21:04:46,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:04:46,819 INFO L470 AbstractCegarLoop]: Abstraction has 5017 states and 6336 transitions. [2021-12-17 21:04:46,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-17 21:04:46,819 INFO L276 IsEmpty]: Start isEmpty. Operand 5017 states and 6336 transitions. [2021-12-17 21:04:46,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-17 21:04:46,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:46,821 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:04:46,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 21:04:47,035 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,SelfDestructingSolverStorable9 [2021-12-17 21:04:47,035 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:47,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:47,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1322076070, now seen corresponding path program 2 times [2021-12-17 21:04:47,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:47,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622772782] [2021-12-17 21:04:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:47,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:47,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:47,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:04:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:47,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:04:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:47,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:04:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:47,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:04:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:47,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:04:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:47,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:04:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:47,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:47,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:47,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622772782] [2021-12-17 21:04:47,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622772782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:04:47,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:04:47,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 21:04:47,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157614269] [2021-12-17 21:04:47,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:04:47,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:04:47,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:47,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:04:47,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:04:47,087 INFO L87 Difference]: Start difference. First operand 5017 states and 6336 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-17 21:04:47,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:04:47,467 INFO L93 Difference]: Finished difference Result 7607 states and 9625 transitions. [2021-12-17 21:04:47,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 21:04:47,467 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), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2021-12-17 21:04:47,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:04:47,480 INFO L225 Difference]: With dead ends: 7607 [2021-12-17 21:04:47,480 INFO L226 Difference]: Without dead ends: 3644 [2021-12-17 21:04:47,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-17 21:04:47,488 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 726 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 21:04:47,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 831 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 21:04:47,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2021-12-17 21:04:47,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 3437. [2021-12-17 21:04:47,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3437 states, 2682 states have (on average 1.2580164056674124) internal successors, (3374), 2731 states have internal predecessors, (3374), 372 states have call successors, (372), 301 states have call predecessors, (372), 381 states have return successors, (536), 411 states have call predecessors, (536), 371 states have call successors, (536) [2021-12-17 21:04:47,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3437 states to 3437 states and 4282 transitions. [2021-12-17 21:04:47,642 INFO L78 Accepts]: Start accepts. Automaton has 3437 states and 4282 transitions. Word has length 77 [2021-12-17 21:04:47,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:04:47,643 INFO L470 AbstractCegarLoop]: Abstraction has 3437 states and 4282 transitions. [2021-12-17 21:04:47,643 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), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-17 21:04:47,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3437 states and 4282 transitions. [2021-12-17 21:04:47,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-17 21:04:47,645 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:47,645 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] [2021-12-17 21:04:47,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 21:04:47,646 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:47,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:47,646 INFO L85 PathProgramCache]: Analyzing trace with hash -360800699, now seen corresponding path program 1 times [2021-12-17 21:04:47,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:47,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525269934] [2021-12-17 21:04:47,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:47,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:47,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:47,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 21:04:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:47,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 21:04:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:47,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 21:04:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:47,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 21:04:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:47,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:47,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525269934] [2021-12-17 21:04:47,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525269934] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:04:47,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:04:47,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 21:04:47,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839107710] [2021-12-17 21:04:47,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:04:47,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:04:47,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:47,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:04:47,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:04:47,697 INFO L87 Difference]: Start difference. First operand 3437 states and 4282 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) [2021-12-17 21:04:48,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:04:48,498 INFO L93 Difference]: Finished difference Result 3805 states and 4849 transitions. [2021-12-17 21:04:48,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 21:04:48,503 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 [2021-12-17 21:04:48,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:04:48,523 INFO L225 Difference]: With dead ends: 3805 [2021-12-17 21:04:48,523 INFO L226 Difference]: Without dead ends: 3664 [2021-12-17 21:04:48,525 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 [2021-12-17 21:04:48,526 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 736 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:04:48,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 953 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:04:48,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3664 states. [2021-12-17 21:04:48,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3664 to 3579. [2021-12-17 21:04:48,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3579 states, 2805 states have (on average 1.2695187165775401) internal successors, (3561), 2855 states have internal predecessors, (3561), 384 states have call successors, (384), 307 states have call predecessors, (384), 388 states have return successors, (551), 423 states have call predecessors, (551), 383 states have call successors, (551) [2021-12-17 21:04:48,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 4496 transitions. [2021-12-17 21:04:48,687 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 4496 transitions. Word has length 79 [2021-12-17 21:04:48,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:04:48,687 INFO L470 AbstractCegarLoop]: Abstraction has 3579 states and 4496 transitions. [2021-12-17 21:04:48,688 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) [2021-12-17 21:04:48,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 4496 transitions. [2021-12-17 21:04:48,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-17 21:04:48,690 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:48,690 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] [2021-12-17 21:04:48,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 21:04:48,690 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:48,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:48,691 INFO L85 PathProgramCache]: Analyzing trace with hash -123752503, now seen corresponding path program 1 times [2021-12-17 21:04:48,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:48,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763024464] [2021-12-17 21:04:48,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:48,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:48,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:48,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 21:04:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:48,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 21:04:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:48,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 21:04:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:48,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 21:04:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:48,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:48,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:48,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763024464] [2021-12-17 21:04:48,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763024464] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:04:48,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:04:48,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:04:48,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719466472] [2021-12-17 21:04:48,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:04:48,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:04:48,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:48,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:04:48,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:04:48,755 INFO L87 Difference]: Start difference. First operand 3579 states and 4496 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) [2021-12-17 21:04:49,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:04:49,376 INFO L93 Difference]: Finished difference Result 3951 states and 5071 transitions. [2021-12-17 21:04:49,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 21:04:49,377 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 [2021-12-17 21:04:49,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:04:49,393 INFO L225 Difference]: With dead ends: 3951 [2021-12-17 21:04:49,393 INFO L226 Difference]: Without dead ends: 3668 [2021-12-17 21:04:49,395 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 [2021-12-17 21:04:49,396 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 597 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 21:04:49,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 916 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 21:04:49,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3668 states. [2021-12-17 21:04:49,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3668 to 3579. [2021-12-17 21:04:49,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3579 states, 2805 states have (on average 1.2688057040998217) internal successors, (3559), 2855 states have internal predecessors, (3559), 384 states have call successors, (384), 307 states have call predecessors, (384), 388 states have return successors, (551), 423 states have call predecessors, (551), 383 states have call successors, (551) [2021-12-17 21:04:49,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 4494 transitions. [2021-12-17 21:04:49,531 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 4494 transitions. Word has length 79 [2021-12-17 21:04:49,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:04:49,532 INFO L470 AbstractCegarLoop]: Abstraction has 3579 states and 4494 transitions. [2021-12-17 21:04:49,532 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) [2021-12-17 21:04:49,533 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 4494 transitions. [2021-12-17 21:04:49,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-17 21:04:49,535 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:49,535 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] [2021-12-17 21:04:49,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 21:04:49,535 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:49,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:49,536 INFO L85 PathProgramCache]: Analyzing trace with hash -178145401, now seen corresponding path program 1 times [2021-12-17 21:04:49,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:49,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121266291] [2021-12-17 21:04:49,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:49,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:49,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:49,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 21:04:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:49,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 21:04:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:49,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 21:04:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:49,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 21:04:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:49,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:49,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:49,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121266291] [2021-12-17 21:04:49,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121266291] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:04:49,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:04:49,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:04:49,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176327554] [2021-12-17 21:04:49,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:04:49,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:04:49,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:49,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:04:49,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:04:49,597 INFO L87 Difference]: Start difference. First operand 3579 states and 4494 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) [2021-12-17 21:04:50,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:04:50,641 INFO L93 Difference]: Finished difference Result 4129 states and 5328 transitions. [2021-12-17 21:04:50,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:04:50,641 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 [2021-12-17 21:04:50,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:04:50,652 INFO L225 Difference]: With dead ends: 4129 [2021-12-17 21:04:50,652 INFO L226 Difference]: Without dead ends: 3846 [2021-12-17 21:04:50,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 21:04:50,655 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 720 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 21:04:50,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [740 Valid, 1453 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 21:04:50,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3846 states. [2021-12-17 21:04:50,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3846 to 3712. [2021-12-17 21:04:50,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 2919 states have (on average 1.276807125727989) internal successors, (3727), 2970 states have internal predecessors, (3727), 396 states have call successors, (396), 313 states have call predecessors, (396), 395 states have return successors, (565), 436 states have call predecessors, (565), 395 states have call successors, (565) [2021-12-17 21:04:50,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 4688 transitions. [2021-12-17 21:04:50,934 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 4688 transitions. Word has length 79 [2021-12-17 21:04:50,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:04:50,934 INFO L470 AbstractCegarLoop]: Abstraction has 3712 states and 4688 transitions. [2021-12-17 21:04:50,934 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) [2021-12-17 21:04:50,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 4688 transitions. [2021-12-17 21:04:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-17 21:04:50,936 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:50,936 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] [2021-12-17 21:04:50,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 21:04:50,937 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:50,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:50,937 INFO L85 PathProgramCache]: Analyzing trace with hash -595542007, now seen corresponding path program 1 times [2021-12-17 21:04:50,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:50,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135152082] [2021-12-17 21:04:50,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:50,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:50,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:50,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 21:04:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:50,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 21:04:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:50,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 21:04:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:50,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 21:04:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:50,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:50,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:50,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135152082] [2021-12-17 21:04:50,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135152082] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:04:50,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:04:50,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:04:50,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308426505] [2021-12-17 21:04:50,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:04:50,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:04:50,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:50,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:04:50,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:04:50,997 INFO L87 Difference]: Start difference. First operand 3712 states and 4688 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) [2021-12-17 21:04:51,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:04:51,902 INFO L93 Difference]: Finished difference Result 4608 states and 6042 transitions. [2021-12-17 21:04:51,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:04:51,902 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 [2021-12-17 21:04:51,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:04:51,918 INFO L225 Difference]: With dead ends: 4608 [2021-12-17 21:04:51,919 INFO L226 Difference]: Without dead ends: 4192 [2021-12-17 21:04:51,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 21:04:51,922 INFO L933 BasicCegarLoop]: 466 mSDtfsCounter, 717 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:04:51,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 1441 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:04:51,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4192 states. [2021-12-17 21:04:52,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4192 to 3980. [2021-12-17 21:04:52,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3980 states, 3149 states have (on average 1.2912035566846618) internal successors, (4066), 3202 states have internal predecessors, (4066), 420 states have call successors, (420), 325 states have call predecessors, (420), 409 states have return successors, (597), 462 states have call predecessors, (597), 419 states have call successors, (597) [2021-12-17 21:04:52,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3980 states to 3980 states and 5083 transitions. [2021-12-17 21:04:52,070 INFO L78 Accepts]: Start accepts. Automaton has 3980 states and 5083 transitions. Word has length 79 [2021-12-17 21:04:52,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:04:52,070 INFO L470 AbstractCegarLoop]: Abstraction has 3980 states and 5083 transitions. [2021-12-17 21:04:52,070 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) [2021-12-17 21:04:52,070 INFO L276 IsEmpty]: Start isEmpty. Operand 3980 states and 5083 transitions. [2021-12-17 21:04:52,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-17 21:04:52,072 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:52,072 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] [2021-12-17 21:04:52,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 21:04:52,073 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:52,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:52,073 INFO L85 PathProgramCache]: Analyzing trace with hash 83730247, now seen corresponding path program 1 times [2021-12-17 21:04:52,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:52,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826143869] [2021-12-17 21:04:52,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:52,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:52,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:52,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 21:04:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:52,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 21:04:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:52,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 21:04:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:52,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 21:04:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:52,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:52,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826143869] [2021-12-17 21:04:52,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826143869] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:04:52,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:04:52,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:04:52,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413449086] [2021-12-17 21:04:52,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:04:52,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:04:52,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:52,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:04:52,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:04:52,136 INFO L87 Difference]: Start difference. First operand 3980 states and 5083 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) [2021-12-17 21:04:53,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:04:53,107 INFO L93 Difference]: Finished difference Result 5742 states and 7727 transitions. [2021-12-17 21:04:53,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 21:04:53,107 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 [2021-12-17 21:04:53,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:04:53,120 INFO L225 Difference]: With dead ends: 5742 [2021-12-17 21:04:53,121 INFO L226 Difference]: Without dead ends: 5058 [2021-12-17 21:04:53,125 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 [2021-12-17 21:04:53,126 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 786 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 21:04:53,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [805 Valid, 1178 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 21:04:53,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5058 states. [2021-12-17 21:04:53,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5058 to 4506. [2021-12-17 21:04:53,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 3603 states have (on average 1.315015265056897) internal successors, (4738), 3660 states have internal predecessors, (4738), 464 states have call successors, (464), 349 states have call predecessors, (464), 437 states have return successors, (663), 510 states have call predecessors, (663), 463 states have call successors, (663) [2021-12-17 21:04:53,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 5865 transitions. [2021-12-17 21:04:53,391 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 5865 transitions. Word has length 79 [2021-12-17 21:04:53,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:04:53,391 INFO L470 AbstractCegarLoop]: Abstraction has 4506 states and 5865 transitions. [2021-12-17 21:04:53,391 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) [2021-12-17 21:04:53,392 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 5865 transitions. [2021-12-17 21:04:53,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-17 21:04:53,395 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:53,395 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] [2021-12-17 21:04:53,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 21:04:53,395 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:53,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:53,396 INFO L85 PathProgramCache]: Analyzing trace with hash 2045304905, now seen corresponding path program 1 times [2021-12-17 21:04:53,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:53,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027314122] [2021-12-17 21:04:53,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:53,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:53,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:53,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 21:04:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:53,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 21:04:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:53,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 21:04:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:53,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 21:04:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:53,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:53,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027314122] [2021-12-17 21:04:53,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027314122] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:04:53,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:04:53,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:04:53,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956123508] [2021-12-17 21:04:53,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:04:53,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:04:53,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:53,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:04:53,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:04:53,454 INFO L87 Difference]: Start difference. First operand 4506 states and 5865 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) [2021-12-17 21:04:54,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:04:54,044 INFO L93 Difference]: Finished difference Result 6048 states and 8208 transitions. [2021-12-17 21:04:54,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 21:04:54,045 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 [2021-12-17 21:04:54,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:04:54,053 INFO L225 Difference]: With dead ends: 6048 [2021-12-17 21:04:54,053 INFO L226 Difference]: Without dead ends: 4838 [2021-12-17 21:04:54,056 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 [2021-12-17 21:04:54,056 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 598 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 21:04:54,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 896 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 21:04:54,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4838 states. [2021-12-17 21:04:54,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4838 to 4506. [2021-12-17 21:04:54,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 3603 states have (on average 1.3125173466555649) internal successors, (4729), 3660 states have internal predecessors, (4729), 464 states have call successors, (464), 349 states have call predecessors, (464), 437 states have return successors, (663), 510 states have call predecessors, (663), 463 states have call successors, (663) [2021-12-17 21:04:54,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 5856 transitions. [2021-12-17 21:04:54,221 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 5856 transitions. Word has length 79 [2021-12-17 21:04:54,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:04:54,221 INFO L470 AbstractCegarLoop]: Abstraction has 4506 states and 5856 transitions. [2021-12-17 21:04:54,221 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) [2021-12-17 21:04:54,221 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 5856 transitions. [2021-12-17 21:04:54,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-17 21:04:54,224 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:54,224 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] [2021-12-17 21:04:54,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 21:04:54,224 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:54,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:54,224 INFO L85 PathProgramCache]: Analyzing trace with hash -2047838457, now seen corresponding path program 1 times [2021-12-17 21:04:54,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:54,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852866335] [2021-12-17 21:04:54,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:54,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:54,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:54,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 21:04:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:54,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 21:04:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:54,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 21:04:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:54,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 21:04:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:54,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:54,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852866335] [2021-12-17 21:04:54,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852866335] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:04:54,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:04:54,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:04:54,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585718129] [2021-12-17 21:04:54,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:04:54,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:04:54,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:54,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:04:54,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:04:54,283 INFO L87 Difference]: Start difference. First operand 4506 states and 5856 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) [2021-12-17 21:04:55,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:04:55,291 INFO L93 Difference]: Finished difference Result 7438 states and 10223 transitions. [2021-12-17 21:04:55,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 21:04:55,291 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 [2021-12-17 21:04:55,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:04:55,305 INFO L225 Difference]: With dead ends: 7438 [2021-12-17 21:04:55,305 INFO L226 Difference]: Without dead ends: 6228 [2021-12-17 21:04:55,308 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 [2021-12-17 21:04:55,308 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 721 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 21:04:55,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 1412 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 21:04:55,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6228 states. [2021-12-17 21:04:55,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6228 to 5569. [2021-12-17 21:04:55,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5569 states, 4526 states have (on average 1.3460008837825894) internal successors, (6092), 4591 states have internal predecessors, (6092), 548 states have call successors, (548), 397 states have call predecessors, (548), 493 states have return successors, (809), 602 states have call predecessors, (809), 547 states have call successors, (809) [2021-12-17 21:04:55,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5569 states to 5569 states and 7449 transitions. [2021-12-17 21:04:55,559 INFO L78 Accepts]: Start accepts. Automaton has 5569 states and 7449 transitions. Word has length 79 [2021-12-17 21:04:55,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:04:55,560 INFO L470 AbstractCegarLoop]: Abstraction has 5569 states and 7449 transitions. [2021-12-17 21:04:55,560 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) [2021-12-17 21:04:55,560 INFO L276 IsEmpty]: Start isEmpty. Operand 5569 states and 7449 transitions. [2021-12-17 21:04:55,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-17 21:04:55,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:55,565 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] [2021-12-17 21:04:55,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 21:04:55,565 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:55,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:55,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1614109371, now seen corresponding path program 1 times [2021-12-17 21:04:55,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:55,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983697036] [2021-12-17 21:04:55,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:55,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:55,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:55,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 21:04:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:55,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 21:04:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:55,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 21:04:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:55,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 21:04:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:55,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:55,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:55,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983697036] [2021-12-17 21:04:55,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983697036] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:04:55,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:04:55,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:04:55,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690653893] [2021-12-17 21:04:55,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:04:55,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:04:55,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:55,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:04:55,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:04:55,635 INFO L87 Difference]: Start difference. First operand 5569 states and 7449 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) [2021-12-17 21:04:56,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:04:56,543 INFO L93 Difference]: Finished difference Result 9335 states and 13081 transitions. [2021-12-17 21:04:56,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 21:04:56,544 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 [2021-12-17 21:04:56,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:04:56,565 INFO L225 Difference]: With dead ends: 9335 [2021-12-17 21:04:56,565 INFO L226 Difference]: Without dead ends: 7063 [2021-12-17 21:04:56,574 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 [2021-12-17 21:04:56,575 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 458 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 21:04:56,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 1288 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 21:04:56,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7063 states. [2021-12-17 21:04:56,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7063 to 5620. [2021-12-17 21:04:56,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5620 states, 4577 states have (on average 1.342145510159493) internal successors, (6143), 4642 states have internal predecessors, (6143), 548 states have call successors, (548), 397 states have call predecessors, (548), 493 states have return successors, (809), 602 states have call predecessors, (809), 547 states have call successors, (809) [2021-12-17 21:04:56,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5620 states to 5620 states and 7500 transitions. [2021-12-17 21:04:56,836 INFO L78 Accepts]: Start accepts. Automaton has 5620 states and 7500 transitions. Word has length 79 [2021-12-17 21:04:56,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:04:56,836 INFO L470 AbstractCegarLoop]: Abstraction has 5620 states and 7500 transitions. [2021-12-17 21:04:56,836 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) [2021-12-17 21:04:56,836 INFO L276 IsEmpty]: Start isEmpty. Operand 5620 states and 7500 transitions. [2021-12-17 21:04:56,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-17 21:04:56,840 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:56,840 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] [2021-12-17 21:04:56,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 21:04:56,841 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:56,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:56,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1629628089, now seen corresponding path program 1 times [2021-12-17 21:04:56,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:56,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167753807] [2021-12-17 21:04:56,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:56,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:56,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:56,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 21:04:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:56,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 21:04:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:56,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 21:04:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:56,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 21:04:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:04:56,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:56,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167753807] [2021-12-17 21:04:56,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167753807] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:04:56,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:04:56,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:04:56,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911656975] [2021-12-17 21:04:56,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:04:56,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:04:56,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:56,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:04:56,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:04:56,908 INFO L87 Difference]: Start difference. First operand 5620 states and 7500 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) [2021-12-17 21:04:58,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:04:58,582 INFO L93 Difference]: Finished difference Result 16119 states and 23641 transitions. [2021-12-17 21:04:58,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 21:04:58,583 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 [2021-12-17 21:04:58,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:04:58,623 INFO L225 Difference]: With dead ends: 16119 [2021-12-17 21:04:58,623 INFO L226 Difference]: Without dead ends: 13796 [2021-12-17 21:04:58,633 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 [2021-12-17 21:04:58,634 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 1645 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1673 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 21:04:58,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1673 Valid, 1369 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 21:04:58,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13796 states. [2021-12-17 21:04:59,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13796 to 11951. [2021-12-17 21:04:59,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11951 states, 10021 states have (on average 1.4002594551441971) internal successors, (14032), 10185 states have internal predecessors, (14032), 1081 states have call successors, (1081), 703 states have call predecessors, (1081), 847 states have return successors, (1832), 1084 states have call predecessors, (1832), 1080 states have call successors, (1832) [2021-12-17 21:04:59,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11951 states to 11951 states and 16945 transitions. [2021-12-17 21:04:59,206 INFO L78 Accepts]: Start accepts. Automaton has 11951 states and 16945 transitions. Word has length 79 [2021-12-17 21:04:59,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:04:59,206 INFO L470 AbstractCegarLoop]: Abstraction has 11951 states and 16945 transitions. [2021-12-17 21:04:59,206 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) [2021-12-17 21:04:59,206 INFO L276 IsEmpty]: Start isEmpty. Operand 11951 states and 16945 transitions. [2021-12-17 21:04:59,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-17 21:04:59,211 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:04:59,211 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:04:59,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 21:04:59,212 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:04:59,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:04:59,212 INFO L85 PathProgramCache]: Analyzing trace with hash -40676858, now seen corresponding path program 1 times [2021-12-17 21:04:59,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:04:59,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975164653] [2021-12-17 21:04:59,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:04:59,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:04:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:59,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:04:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:59,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:04:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:59,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:04:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:59,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:04:59,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:59,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:04:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:59,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:04:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:59,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:04:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:59,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 21:04:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:04:59,267 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 21:04:59,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:04:59,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975164653] [2021-12-17 21:04:59,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975164653] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:04:59,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:04:59,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 21:04:59,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137486621] [2021-12-17 21:04:59,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:04:59,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 21:04:59,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:04:59,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 21:04:59,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:04:59,270 INFO L87 Difference]: Start difference. First operand 11951 states and 16945 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-17 21:05:00,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:00,476 INFO L93 Difference]: Finished difference Result 18655 states and 25228 transitions. [2021-12-17 21:05:00,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 21:05:00,476 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2021-12-17 21:05:00,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:00,516 INFO L225 Difference]: With dead ends: 18655 [2021-12-17 21:05:00,516 INFO L226 Difference]: Without dead ends: 14074 [2021-12-17 21:05:00,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-12-17 21:05:00,530 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 889 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:00,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 1324 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 21:05:00,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14074 states. [2021-12-17 21:05:01,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14074 to 13798. [2021-12-17 21:05:01,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13798 states, 11421 states have (on average 1.3745731547149986) internal successors, (15699), 11630 states have internal predecessors, (15699), 1279 states have call successors, (1279), 871 states have call predecessors, (1279), 1096 states have return successors, (2212), 1318 states have call predecessors, (2212), 1278 states have call successors, (2212) [2021-12-17 21:05:01,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13798 states to 13798 states and 19190 transitions. [2021-12-17 21:05:01,147 INFO L78 Accepts]: Start accepts. Automaton has 13798 states and 19190 transitions. Word has length 84 [2021-12-17 21:05:01,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:01,147 INFO L470 AbstractCegarLoop]: Abstraction has 13798 states and 19190 transitions. [2021-12-17 21:05:01,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-17 21:05:01,147 INFO L276 IsEmpty]: Start isEmpty. Operand 13798 states and 19190 transitions. [2021-12-17 21:05:01,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-17 21:05:01,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:01,154 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-17 21:05:01,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 21:05:01,154 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:01,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:01,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1005107396, now seen corresponding path program 1 times [2021-12-17 21:05:01,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:01,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880086423] [2021-12-17 21:05:01,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:01,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:01,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:01,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:01,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:01,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:01,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:01,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:01,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:01,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:01,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 21:05:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 21:05:01,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:01,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880086423] [2021-12-17 21:05:01,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880086423] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:01,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:01,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 21:05:01,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931250764] [2021-12-17 21:05:01,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:01,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 21:05:01,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:01,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 21:05:01,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-17 21:05:01,212 INFO L87 Difference]: Start difference. First operand 13798 states and 19190 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) [2021-12-17 21:05:02,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:02,428 INFO L93 Difference]: Finished difference Result 17739 states and 23976 transitions. [2021-12-17 21:05:02,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 21:05:02,430 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 93 [2021-12-17 21:05:02,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:02,469 INFO L225 Difference]: With dead ends: 17739 [2021-12-17 21:05:02,470 INFO L226 Difference]: Without dead ends: 13276 [2021-12-17 21:05:02,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2021-12-17 21:05:02,486 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 1276 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:02,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1317 Valid, 1341 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:05:02,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13276 states. [2021-12-17 21:05:03,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13276 to 12964. [2021-12-17 21:05:03,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12964 states, 10787 states have (on average 1.3786965792157226) internal successors, (14872), 10975 states have internal predecessors, (14872), 1188 states have call successors, (1188), 794 states have call predecessors, (1188), 987 states have return successors, (1992), 1216 states have call predecessors, (1992), 1187 states have call successors, (1992) [2021-12-17 21:05:03,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12964 states to 12964 states and 18052 transitions. [2021-12-17 21:05:03,086 INFO L78 Accepts]: Start accepts. Automaton has 12964 states and 18052 transitions. Word has length 93 [2021-12-17 21:05:03,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:03,086 INFO L470 AbstractCegarLoop]: Abstraction has 12964 states and 18052 transitions. [2021-12-17 21:05:03,086 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) [2021-12-17 21:05:03,086 INFO L276 IsEmpty]: Start isEmpty. Operand 12964 states and 18052 transitions. [2021-12-17 21:05:03,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-17 21:05:03,103 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:03,103 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] [2021-12-17 21:05:03,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 21:05:03,103 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:03,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:03,103 INFO L85 PathProgramCache]: Analyzing trace with hash -834500451, now seen corresponding path program 1 times [2021-12-17 21:05:03,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:03,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281054638] [2021-12-17 21:05:03,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:03,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:03,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:03,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 21:05:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:03,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 21:05:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:03,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 21:05:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:03,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 21:05:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:03,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 21:05:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:03,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 21:05:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:03,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 21:05:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:03,173 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 21:05:03,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:03,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281054638] [2021-12-17 21:05:03,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281054638] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 21:05:03,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133622552] [2021-12-17 21:05:03,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:03,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 21:05:03,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:05:03,188 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 21:05:03,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 21:05:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:03,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 21:05:03,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 21:05:03,442 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 21:05:03,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 21:05:03,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133622552] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:03,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 21:05:03,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 21:05:03,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553424575] [2021-12-17 21:05:03,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:03,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 21:05:03,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:03,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 21:05:03,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:05:03,443 INFO L87 Difference]: Start difference. First operand 12964 states and 18052 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) [2021-12-17 21:05:04,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:04,368 INFO L93 Difference]: Finished difference Result 30027 states and 43896 transitions. [2021-12-17 21:05:04,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 21:05:04,369 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 [2021-12-17 21:05:04,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:04,430 INFO L225 Difference]: With dead ends: 30027 [2021-12-17 21:05:04,430 INFO L226 Difference]: Without dead ends: 21373 [2021-12-17 21:05:04,465 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 [2021-12-17 21:05:04,466 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 299 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 557 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 [2021-12-17 21:05:04,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 557 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 21:05:04,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21373 states. [2021-12-17 21:05:05,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21373 to 21235. [2021-12-17 21:05:05,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21235 states, 17900 states have (on average 1.405586592178771) internal successors, (25160), 18203 states have internal predecessors, (25160), 1874 states have call successors, (1874), 1202 states have call predecessors, (1874), 1459 states have return successors, (3223), 1851 states have call predecessors, (3223), 1873 states have call successors, (3223) [2021-12-17 21:05:05,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21235 states to 21235 states and 30257 transitions. [2021-12-17 21:05:05,500 INFO L78 Accepts]: Start accepts. Automaton has 21235 states and 30257 transitions. Word has length 128 [2021-12-17 21:05:05,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:05,500 INFO L470 AbstractCegarLoop]: Abstraction has 21235 states and 30257 transitions. [2021-12-17 21:05:05,501 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) [2021-12-17 21:05:05,501 INFO L276 IsEmpty]: Start isEmpty. Operand 21235 states and 30257 transitions. [2021-12-17 21:05:05,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-17 21:05:05,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:05,529 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] [2021-12-17 21:05:05,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-17 21:05:05,747 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,SelfDestructingSolverStorable22 [2021-12-17 21:05:05,747 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:05,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:05,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2033886077, now seen corresponding path program 1 times [2021-12-17 21:05:05,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:05,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666385085] [2021-12-17 21:05:05,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:05,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:05,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:05,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 21:05:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:05,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 21:05:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:05,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 21:05:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:05,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 21:05:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:05,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 21:05:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:05,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 21:05:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:05,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 21:05:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:05,824 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-17 21:05:05,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:05,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666385085] [2021-12-17 21:05:05,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666385085] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 21:05:05,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362554647] [2021-12-17 21:05:05,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:05,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 21:05:05,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:05:05,826 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) [2021-12-17 21:05:05,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 21:05:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:05,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 21:05:05,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 21:05:06,070 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-17 21:05:06,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 21:05:06,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362554647] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:06,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 21:05:06,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-17 21:05:06,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339845959] [2021-12-17 21:05:06,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:06,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 21:05:06,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:06,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 21:05:06,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:05:06,073 INFO L87 Difference]: Start difference. First operand 21235 states and 30257 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) [2021-12-17 21:05:07,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:07,391 INFO L93 Difference]: Finished difference Result 54122 states and 79371 transitions. [2021-12-17 21:05:07,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 21:05:07,392 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 [2021-12-17 21:05:07,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:07,456 INFO L225 Difference]: With dead ends: 54122 [2021-12-17 21:05:07,456 INFO L226 Difference]: Without dead ends: 25474 [2021-12-17 21:05:07,494 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 [2021-12-17 21:05:07,495 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 192 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 859 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 [2021-12-17 21:05:07,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 859 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 21:05:07,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25474 states. [2021-12-17 21:05:08,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25474 to 25474. [2021-12-17 21:05:08,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25474 states, 21568 states have (on average 1.4097737388724036) internal successors, (30406), 21903 states have internal predecessors, (30406), 2209 states have call successors, (2209), 1406 states have call predecessors, (2209), 1695 states have return successors, (3853), 2186 states have call predecessors, (3853), 2208 states have call successors, (3853) [2021-12-17 21:05:08,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25474 states to 25474 states and 36468 transitions. [2021-12-17 21:05:08,706 INFO L78 Accepts]: Start accepts. Automaton has 25474 states and 36468 transitions. Word has length 128 [2021-12-17 21:05:08,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:08,706 INFO L470 AbstractCegarLoop]: Abstraction has 25474 states and 36468 transitions. [2021-12-17 21:05:08,707 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) [2021-12-17 21:05:08,707 INFO L276 IsEmpty]: Start isEmpty. Operand 25474 states and 36468 transitions. [2021-12-17 21:05:08,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-17 21:05:08,731 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:08,732 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:05:08,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 21:05:08,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 21:05:08,947 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:08,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:08,948 INFO L85 PathProgramCache]: Analyzing trace with hash 45573472, now seen corresponding path program 1 times [2021-12-17 21:05:08,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:08,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000073457] [2021-12-17 21:05:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:08,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:08,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:08,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:08,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:08,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:08,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 21:05:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 21:05:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 21:05:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 21:05:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 21:05:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-17 21:05:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-17 21:05:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,028 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-17 21:05:09,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:09,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000073457] [2021-12-17 21:05:09,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000073457] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 21:05:09,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349433879] [2021-12-17 21:05:09,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:09,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 21:05:09,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:05:09,030 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) [2021-12-17 21:05:09,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 21:05:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-17 21:05:09,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 21:05:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-17 21:05:09,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 21:05:09,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349433879] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:09,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 21:05:09,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2021-12-17 21:05:09,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769387460] [2021-12-17 21:05:09,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:09,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:05:09,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:09,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:05:09,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 21:05:09,291 INFO L87 Difference]: Start difference. First operand 25474 states and 36468 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 21:05:10,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:10,341 INFO L93 Difference]: Finished difference Result 27628 states and 39087 transitions. [2021-12-17 21:05:10,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 21:05:10,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2021-12-17 21:05:10,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:10,387 INFO L225 Difference]: With dead ends: 27628 [2021-12-17 21:05:10,387 INFO L226 Difference]: Without dead ends: 23357 [2021-12-17 21:05:10,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-12-17 21:05:10,397 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 34 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:10,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 1723 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 21:05:10,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23357 states. [2021-12-17 21:05:11,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23357 to 23232. [2021-12-17 21:05:11,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23232 states, 19900 states have (on average 1.4256281407035176) internal successors, (28370), 20183 states have internal predecessors, (28370), 1935 states have call successors, (1935), 1174 states have call predecessors, (1935), 1395 states have return successors, (3456), 1890 states have call predecessors, (3456), 1934 states have call successors, (3456) [2021-12-17 21:05:11,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23232 states to 23232 states and 33761 transitions. [2021-12-17 21:05:11,278 INFO L78 Accepts]: Start accepts. Automaton has 23232 states and 33761 transitions. Word has length 145 [2021-12-17 21:05:11,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:11,279 INFO L470 AbstractCegarLoop]: Abstraction has 23232 states and 33761 transitions. [2021-12-17 21:05:11,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-17 21:05:11,279 INFO L276 IsEmpty]: Start isEmpty. Operand 23232 states and 33761 transitions. [2021-12-17 21:05:11,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-17 21:05:11,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:11,377 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:05:11,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 21:05:11,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 21:05:11,591 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:11,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:11,592 INFO L85 PathProgramCache]: Analyzing trace with hash 37593864, now seen corresponding path program 1 times [2021-12-17 21:05:11,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:11,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084937542] [2021-12-17 21:05:11,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:11,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:11,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:11,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:11,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:11,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:11,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:11,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:11,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:11,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 21:05:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:11,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 21:05:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:11,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-17 21:05:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:11,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 21:05:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:11,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:11,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:11,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 21:05:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:11,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-17 21:05:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:11,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-17 21:05:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:11,643 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-17 21:05:11,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:11,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084937542] [2021-12-17 21:05:11,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084937542] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:11,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:11,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 21:05:11,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318338723] [2021-12-17 21:05:11,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:11,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:05:11,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:11,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:05:11,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:05:11,645 INFO L87 Difference]: Start difference. First operand 23232 states and 33761 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 21:05:12,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:12,520 INFO L93 Difference]: Finished difference Result 23289 states and 33821 transitions. [2021-12-17 21:05:12,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 21:05:12,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2021-12-17 21:05:12,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:12,575 INFO L225 Difference]: With dead ends: 23289 [2021-12-17 21:05:12,575 INFO L226 Difference]: Without dead ends: 22840 [2021-12-17 21:05:12,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-17 21:05:12,593 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 387 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:12,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 912 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 21:05:12,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22840 states. [2021-12-17 21:05:13,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22840 to 22786. [2021-12-17 21:05:13,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22786 states, 19553 states have (on average 1.4299595969927887) internal successors, (27960), 19830 states have internal predecessors, (27960), 1889 states have call successors, (1889), 1134 states have call predecessors, (1889), 1342 states have return successors, (3387), 1837 states have call predecessors, (3387), 1888 states have call successors, (3387) [2021-12-17 21:05:13,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22786 states to 22786 states and 33236 transitions. [2021-12-17 21:05:13,541 INFO L78 Accepts]: Start accepts. Automaton has 22786 states and 33236 transitions. Word has length 147 [2021-12-17 21:05:13,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:13,542 INFO L470 AbstractCegarLoop]: Abstraction has 22786 states and 33236 transitions. [2021-12-17 21:05:13,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-17 21:05:13,542 INFO L276 IsEmpty]: Start isEmpty. Operand 22786 states and 33236 transitions. [2021-12-17 21:05:13,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-17 21:05:13,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:13,563 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:05:13,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 21:05:13,563 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:13,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:13,564 INFO L85 PathProgramCache]: Analyzing trace with hash 644674118, now seen corresponding path program 1 times [2021-12-17 21:05:13,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:13,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651474809] [2021-12-17 21:05:13,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:13,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:13,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:13,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:13,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:13,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:13,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:13,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:13,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:13,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 21:05:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:13,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 21:05:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:13,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 21:05:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:13,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 21:05:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:13,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:13,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:13,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-17 21:05:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:13,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-17 21:05:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:13,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-17 21:05:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:13,620 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-17 21:05:13,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:13,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651474809] [2021-12-17 21:05:13,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651474809] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:13,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:13,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:13,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212607153] [2021-12-17 21:05:13,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:13,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:13,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:13,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:13,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:13,622 INFO L87 Difference]: Start difference. First operand 22786 states and 33236 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-17 21:05:14,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:14,747 INFO L93 Difference]: Finished difference Result 24263 states and 35035 transitions. [2021-12-17 21:05:14,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 21:05:14,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2021-12-17 21:05:14,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:14,796 INFO L225 Difference]: With dead ends: 24263 [2021-12-17 21:05:14,796 INFO L226 Difference]: Without dead ends: 22907 [2021-12-17 21:05:14,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 21:05:14,806 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 314 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:14,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 1276 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 21:05:14,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22907 states. [2021-12-17 21:05:15,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22907 to 22715. [2021-12-17 21:05:15,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22715 states, 19502 states have (on average 1.430161009127269) internal successors, (27891), 19778 states have internal predecessors, (27891), 1882 states have call successors, (1882), 1131 states have call predecessors, (1882), 1329 states have return successors, (3369), 1821 states have call predecessors, (3369), 1881 states have call successors, (3369) [2021-12-17 21:05:15,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22715 states to 22715 states and 33142 transitions. [2021-12-17 21:05:15,965 INFO L78 Accepts]: Start accepts. Automaton has 22715 states and 33142 transitions. Word has length 159 [2021-12-17 21:05:15,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:15,965 INFO L470 AbstractCegarLoop]: Abstraction has 22715 states and 33142 transitions. [2021-12-17 21:05:15,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-17 21:05:15,965 INFO L276 IsEmpty]: Start isEmpty. Operand 22715 states and 33142 transitions. [2021-12-17 21:05:15,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-17 21:05:15,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:15,988 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:05:15,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 21:05:15,988 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:15,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:15,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1611156349, now seen corresponding path program 1 times [2021-12-17 21:05:15,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:15,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223238167] [2021-12-17 21:05:15,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:15,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 21:05:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 21:05:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 21:05:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-17 21:05:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-17 21:05:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-17 21:05:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-17 21:05:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,078 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-17 21:05:16,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:16,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223238167] [2021-12-17 21:05:16,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223238167] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 21:05:16,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367653789] [2021-12-17 21:05:16,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:16,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 21:05:16,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:05:16,080 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) [2021-12-17 21:05:16,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 21:05:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-17 21:05:16,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 21:05:16,416 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-17 21:05:16,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 21:05:16,737 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-17 21:05:16,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367653789] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 21:05:16,737 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 21:05:16,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2021-12-17 21:05:16,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742344537] [2021-12-17 21:05:16,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 21:05:16,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-17 21:05:16,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:16,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-17 21:05:16,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-12-17 21:05:16,738 INFO L87 Difference]: Start difference. First operand 22715 states and 33142 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2021-12-17 21:05:18,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:18,353 INFO L93 Difference]: Finished difference Result 24687 states and 35595 transitions. [2021-12-17 21:05:18,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-17 21:05:18,354 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2021-12-17 21:05:18,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:18,418 INFO L225 Difference]: With dead ends: 24687 [2021-12-17 21:05:18,419 INFO L226 Difference]: Without dead ends: 23253 [2021-12-17 21:05:18,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 355 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2021-12-17 21:05:18,436 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 1283 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:18,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1306 Valid, 1345 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:05:18,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23253 states. [2021-12-17 21:05:19,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23253 to 23103. [2021-12-17 21:05:19,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23103 states, 19779 states have (on average 1.4253501188128823) internal successors, (28192), 20062 states have internal predecessors, (28192), 1936 states have call successors, (1936), 1181 states have call predecessors, (1936), 1386 states have return successors, (3482), 1875 states have call predecessors, (3482), 1935 states have call successors, (3482) [2021-12-17 21:05:19,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23103 states to 23103 states and 33610 transitions. [2021-12-17 21:05:19,466 INFO L78 Accepts]: Start accepts. Automaton has 23103 states and 33610 transitions. Word has length 162 [2021-12-17 21:05:19,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:19,466 INFO L470 AbstractCegarLoop]: Abstraction has 23103 states and 33610 transitions. [2021-12-17 21:05:19,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2021-12-17 21:05:19,466 INFO L276 IsEmpty]: Start isEmpty. Operand 23103 states and 33610 transitions. [2021-12-17 21:05:19,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-17 21:05:19,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:19,492 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] [2021-12-17 21:05:19,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-17 21:05:19,707 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,SelfDestructingSolverStorable27 [2021-12-17 21:05:19,708 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:19,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:19,708 INFO L85 PathProgramCache]: Analyzing trace with hash 948222591, now seen corresponding path program 1 times [2021-12-17 21:05:19,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:19,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196563002] [2021-12-17 21:05:19,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:19,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:19,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:19,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 21:05:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:19,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 21:05:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:19,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 21:05:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:19,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 21:05:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:19,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 21:05:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:19,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 21:05:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:19,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-17 21:05:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:19,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 21:05:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:19,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-17 21:05:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-17 21:05:19,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:19,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196563002] [2021-12-17 21:05:19,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196563002] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 21:05:19,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813998725] [2021-12-17 21:05:19,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:19,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 21:05:19,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:05:19,799 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) [2021-12-17 21:05:19,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-17 21:05:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:19,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 21:05:19,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 21:05:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-17 21:05:20,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 21:05:20,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813998725] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:20,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 21:05:20,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 21:05:20,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763518928] [2021-12-17 21:05:20,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:20,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 21:05:20,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:20,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 21:05:20,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:05:20,146 INFO L87 Difference]: Start difference. First operand 23103 states and 33610 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) [2021-12-17 21:05:21,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:21,634 INFO L93 Difference]: Finished difference Result 64820 states and 96379 transitions. [2021-12-17 21:05:21,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 21:05:21,634 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 [2021-12-17 21:05:21,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:21,734 INFO L225 Difference]: With dead ends: 64820 [2021-12-17 21:05:21,734 INFO L226 Difference]: Without dead ends: 43656 [2021-12-17 21:05:21,768 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 [2021-12-17 21:05:21,769 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 252 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 555 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 [2021-12-17 21:05:21,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 555 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 21:05:21,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43656 states. [2021-12-17 21:05:23,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43656 to 43314. [2021-12-17 21:05:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43314 states, 37157 states have (on average 1.431574131388433) internal successors, (53193), 37702 states have internal predecessors, (53193), 3589 states have call successors, (3589), 2201 states have call predecessors, (3589), 2566 states have return successors, (6475), 3426 states have call predecessors, (6475), 3588 states have call successors, (6475) [2021-12-17 21:05:23,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43314 states to 43314 states and 63257 transitions. [2021-12-17 21:05:23,617 INFO L78 Accepts]: Start accepts. Automaton has 43314 states and 63257 transitions. Word has length 166 [2021-12-17 21:05:23,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:23,618 INFO L470 AbstractCegarLoop]: Abstraction has 43314 states and 63257 transitions. [2021-12-17 21:05:23,618 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) [2021-12-17 21:05:23,618 INFO L276 IsEmpty]: Start isEmpty. Operand 43314 states and 63257 transitions. [2021-12-17 21:05:23,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-17 21:05:23,667 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:23,667 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] [2021-12-17 21:05:23,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-17 21:05:23,867 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,SelfDestructingSolverStorable28 [2021-12-17 21:05:23,867 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:23,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:23,868 INFO L85 PathProgramCache]: Analyzing trace with hash -104058437, now seen corresponding path program 1 times [2021-12-17 21:05:23,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:23,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112604057] [2021-12-17 21:05:23,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:23,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:23,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:23,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 21:05:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:23,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 21:05:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:23,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 21:05:23,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:23,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 21:05:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:23,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 21:05:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:23,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 21:05:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:23,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-17 21:05:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:23,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 21:05:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:23,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-17 21:05:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:23,945 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-17 21:05:23,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:23,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112604057] [2021-12-17 21:05:23,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112604057] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 21:05:23,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302687984] [2021-12-17 21:05:23,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:23,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 21:05:23,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:05:23,947 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) [2021-12-17 21:05:23,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-17 21:05:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:24,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 21:05:24,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 21:05:24,250 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-17 21:05:24,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 21:05:24,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302687984] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:24,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 21:05:24,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 21:05:24,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378169146] [2021-12-17 21:05:24,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:24,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 21:05:24,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:24,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 21:05:24,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:05:24,251 INFO L87 Difference]: Start difference. First operand 43314 states and 63257 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) [2021-12-17 21:05:26,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:26,846 INFO L93 Difference]: Finished difference Result 101223 states and 149637 transitions. [2021-12-17 21:05:26,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 21:05:26,846 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 [2021-12-17 21:05:26,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:27,016 INFO L225 Difference]: With dead ends: 101223 [2021-12-17 21:05:27,016 INFO L226 Difference]: Without dead ends: 67797 [2021-12-17 21:05:27,071 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 [2021-12-17 21:05:27,072 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 253 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 560 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 [2021-12-17 21:05:27,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 560 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 21:05:27,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67797 states. [2021-12-17 21:05:29,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67797 to 67251. [2021-12-17 21:05:30,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67251 states, 57864 states have (on average 1.4343978985206691) internal successors, (83000), 58669 states have internal predecessors, (83000), 5440 states have call successors, (5440), 3388 states have call predecessors, (5440), 3945 states have return successors, (9693), 5209 states have call predecessors, (9693), 5439 states have call successors, (9693) [2021-12-17 21:05:30,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67251 states to 67251 states and 98133 transitions. [2021-12-17 21:05:30,235 INFO L78 Accepts]: Start accepts. Automaton has 67251 states and 98133 transitions. Word has length 166 [2021-12-17 21:05:30,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:30,236 INFO L470 AbstractCegarLoop]: Abstraction has 67251 states and 98133 transitions. [2021-12-17 21:05:30,236 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) [2021-12-17 21:05:30,236 INFO L276 IsEmpty]: Start isEmpty. Operand 67251 states and 98133 transitions. [2021-12-17 21:05:30,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 21:05:30,305 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:30,306 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:05:30,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-17 21:05:30,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 21:05:30,519 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:30,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:30,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1396720151, now seen corresponding path program 1 times [2021-12-17 21:05:30,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:30,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387884790] [2021-12-17 21:05:30,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:30,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 21:05:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-17 21:05:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-17 21:05:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 21:05:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-17 21:05:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:05:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-17 21:05:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 21:05:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-17 21:05:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-17 21:05:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-17 21:05:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 21:05:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,598 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-12-17 21:05:30,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:30,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387884790] [2021-12-17 21:05:30,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387884790] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 21:05:30,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563364534] [2021-12-17 21:05:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:30,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 21:05:30,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:05:30,599 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) [2021-12-17 21:05:30,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-17 21:05:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 21:05:30,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 21:05:30,940 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-17 21:05:30,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 21:05:30,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563364534] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:30,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 21:05:30,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-17 21:05:30,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107414816] [2021-12-17 21:05:30,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:30,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 21:05:30,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:30,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 21:05:30,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:05:30,941 INFO L87 Difference]: Start difference. First operand 67251 states and 98133 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-17 21:05:33,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:33,223 INFO L93 Difference]: Finished difference Result 69013 states and 100262 transitions. [2021-12-17 21:05:33,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 21:05:33,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (16), 3 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 179 [2021-12-17 21:05:33,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:33,418 INFO L225 Difference]: With dead ends: 69013 [2021-12-17 21:05:33,419 INFO L226 Difference]: Without dead ends: 67258 [2021-12-17 21:05:33,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:05:33,458 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 33 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:33,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 714 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 21:05:33,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67258 states.