./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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.09.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 39b635cc2ab0f0d4f8e606a07f9fc2cea48a2218c52549f8b5aa54058d2e5b4b --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:32:16,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:32:16,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:32:16,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:32:16,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:32:16,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:32:16,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:32:16,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:32:16,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:32:16,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:32:16,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:32:16,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:32:16,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:32:16,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:32:16,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:32:16,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:32:16,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:32:16,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:32:16,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:32:16,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:32:16,958 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:32:16,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:32:16,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:32:16,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:32:16,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:32:16,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:32:16,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:32:16,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:32:16,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:32:16,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:32:16,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:32:16,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:32:16,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:32:16,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:32:16,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:32:16,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:32:16,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:32:16,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:32:16,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:32:16,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:32:16,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:32:16,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:32:16,971 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:32:16,985 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:32:16,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:32:16,986 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:32:16,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:32:16,987 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:32:16,987 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:32:16,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:32:16,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:32:16,990 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:32:16,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:32:16,991 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:32:16,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:32:16,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:32:16,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:32:16,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:32:16,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:32:16,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:32:16,992 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:32:16,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:32:16,993 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:32:16,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:32:16,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:32:16,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:32:16,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:32:16,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:32:16,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:32:16,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:32:16,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:32:16,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:32:16,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:32:16,995 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:32:16,995 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:32:16,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:32:16,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39b635cc2ab0f0d4f8e606a07f9fc2cea48a2218c52549f8b5aa54058d2e5b4b [2022-07-12 09:32:17,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:32:17,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:32:17,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:32:17,200 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:32:17,200 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:32:17,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-2.c [2022-07-12 09:32:17,264 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9da4f9f71/b979538b0fd34c0da31c13b0ed64b4fd/FLAG9c3bb579a [2022-07-12 09:32:17,641 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:32:17,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-2.c [2022-07-12 09:32:17,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9da4f9f71/b979538b0fd34c0da31c13b0ed64b4fd/FLAG9c3bb579a [2022-07-12 09:32:17,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9da4f9f71/b979538b0fd34c0da31c13b0ed64b4fd [2022-07-12 09:32:17,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:32:17,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:32:17,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:32:17,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:32:17,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:32:17,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:32:17" (1/1) ... [2022-07-12 09:32:17,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cace209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:17, skipping insertion in model container [2022-07-12 09:32:17,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:32:17" (1/1) ... [2022-07-12 09:32:17,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:32:17,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:32:17,857 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.09.cil-2.c[914,927] [2022-07-12 09:32:17,893 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.09.cil-2.c[7115,7128] [2022-07-12 09:32:17,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:32:17,989 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:32:18,001 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.09.cil-2.c[914,927] [2022-07-12 09:32:18,013 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.09.cil-2.c[7115,7128] [2022-07-12 09:32:18,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:32:18,082 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:32:18,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:18 WrapperNode [2022-07-12 09:32:18,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:32:18,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:32:18,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:32:18,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:32:18,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:18" (1/1) ... [2022-07-12 09:32:18,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:18" (1/1) ... [2022-07-12 09:32:18,138 INFO L137 Inliner]: procedures = 71, calls = 85, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 871 [2022-07-12 09:32:18,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:32:18,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:32:18,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:32:18,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:32:18,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:18" (1/1) ... [2022-07-12 09:32:18,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:18" (1/1) ... [2022-07-12 09:32:18,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:18" (1/1) ... [2022-07-12 09:32:18,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:18" (1/1) ... [2022-07-12 09:32:18,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:18" (1/1) ... [2022-07-12 09:32:18,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:18" (1/1) ... [2022-07-12 09:32:18,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:18" (1/1) ... [2022-07-12 09:32:18,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:32:18,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:32:18,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:32:18,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:32:18,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:18" (1/1) ... [2022-07-12 09:32:18,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:32:18,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:32:18,212 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) [2022-07-12 09:32:18,217 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 [2022-07-12 09:32:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:32:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 09:32:18,237 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 09:32:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-12 09:32:18,238 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-12 09:32:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-12 09:32:18,238 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-12 09:32:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-12 09:32:18,238 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-12 09:32:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-12 09:32:18,238 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-12 09:32:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-12 09:32:18,239 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-12 09:32:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-12 09:32:18,239 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-12 09:32:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-12 09:32:18,239 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-12 09:32:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-12 09:32:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-12 09:32:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-12 09:32:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-12 09:32:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-12 09:32:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-12 09:32:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:32:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-12 09:32:18,240 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-12 09:32:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-12 09:32:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-12 09:32:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:32:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:32:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-12 09:32:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-12 09:32:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-12 09:32:18,241 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-12 09:32:18,332 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:32:18,339 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:32:18,913 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:32:18,926 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:32:18,926 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-12 09:32:18,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:32:18 BoogieIcfgContainer [2022-07-12 09:32:18,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:32:18,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:32:18,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:32:18,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:32:18,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:32:17" (1/3) ... [2022-07-12 09:32:18,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d2afec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:32:18, skipping insertion in model container [2022-07-12 09:32:18,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:18" (2/3) ... [2022-07-12 09:32:18,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d2afec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:32:18, skipping insertion in model container [2022-07-12 09:32:18,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:32:18" (3/3) ... [2022-07-12 09:32:18,935 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.09.cil-2.c [2022-07-12 09:32:18,944 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:32:18,945 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:32:18,981 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:32:18,985 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@262f2d16, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4ea3f223 [2022-07-12 09:32:18,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:32:18,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 416 states, 359 states have (on average 1.6323119777158774) internal successors, (586), 367 states have internal predecessors, (586), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-12 09:32:18,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:32:18,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:18,998 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:32:18,999 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:19,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:19,002 INFO L85 PathProgramCache]: Analyzing trace with hash 910047860, now seen corresponding path program 1 times [2022-07-12 09:32:19,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:19,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677388840] [2022-07-12 09:32:19,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:19,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:19,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:19,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:19,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:19,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:19,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:19,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:19,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:19,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:19,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677388840] [2022-07-12 09:32:19,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677388840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:19,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:19,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:32:19,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727218139] [2022-07-12 09:32:19,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:19,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:32:19,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:19,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:32:19,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:32:19,313 INFO L87 Difference]: Start difference. First operand has 416 states, 359 states have (on average 1.6323119777158774) internal successors, (586), 367 states have internal predecessors, (586), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) 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) [2022-07-12 09:32:20,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:20,113 INFO L93 Difference]: Finished difference Result 941 states and 1492 transitions. [2022-07-12 09:32:20,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:32:20,115 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 [2022-07-12 09:32:20,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:20,125 INFO L225 Difference]: With dead ends: 941 [2022-07-12 09:32:20,125 INFO L226 Difference]: Without dead ends: 540 [2022-07-12 09:32:20,130 INFO L412 NwaCegarLoop]: 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 [2022-07-12 09:32:20,132 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 1316 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:20,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 1812 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:32:20,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-07-12 09:32:20,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 501. [2022-07-12 09:32:20,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 427 states have (on average 1.515222482435597) internal successors, (647), 434 states have internal predecessors, (647), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (51), 47 states have call predecessors, (51), 46 states have call successors, (51) [2022-07-12 09:32:20,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 748 transitions. [2022-07-12 09:32:20,190 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 748 transitions. Word has length 65 [2022-07-12 09:32:20,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:20,190 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 748 transitions. [2022-07-12 09:32:20,190 INFO L496 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) [2022-07-12 09:32:20,190 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 748 transitions. [2022-07-12 09:32:20,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:32:20,193 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:20,193 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:32:20,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:32:20,194 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:20,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:20,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1313833811, now seen corresponding path program 1 times [2022-07-12 09:32:20,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:20,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860003600] [2022-07-12 09:32:20,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:20,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:20,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:20,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860003600] [2022-07-12 09:32:20,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860003600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:20,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:20,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:32:20,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758663877] [2022-07-12 09:32:20,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:20,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:32:20,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:20,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:32:20,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:32:20,334 INFO L87 Difference]: Start difference. First operand 501 states and 748 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) [2022-07-12 09:32:21,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:21,215 INFO L93 Difference]: Finished difference Result 848 states and 1225 transitions. [2022-07-12 09:32:21,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 09:32:21,215 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 [2022-07-12 09:32:21,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:21,219 INFO L225 Difference]: With dead ends: 848 [2022-07-12 09:32:21,219 INFO L226 Difference]: Without dead ends: 671 [2022-07-12 09:32:21,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-12 09:32:21,221 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 1203 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 2349 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:21,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 2349 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:32:21,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-07-12 09:32:21,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 597. [2022-07-12 09:32:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 503 states have (on average 1.4930417495029822) internal successors, (751), 512 states have internal predecessors, (751), 61 states have call successors, (61), 29 states have call predecessors, (61), 31 states have return successors, (70), 59 states have call predecessors, (70), 57 states have call successors, (70) [2022-07-12 09:32:21,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 882 transitions. [2022-07-12 09:32:21,252 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 882 transitions. Word has length 65 [2022-07-12 09:32:21,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:21,252 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 882 transitions. [2022-07-12 09:32:21,252 INFO L496 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) [2022-07-12 09:32:21,253 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 882 transitions. [2022-07-12 09:32:21,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:32:21,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:21,255 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:32:21,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:32:21,255 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:21,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:21,256 INFO L85 PathProgramCache]: Analyzing trace with hash -714752299, now seen corresponding path program 1 times [2022-07-12 09:32:21,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:21,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179137319] [2022-07-12 09:32:21,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:21,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:21,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:21,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179137319] [2022-07-12 09:32:21,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179137319] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:21,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:21,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:32:21,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329647474] [2022-07-12 09:32:21,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:21,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:32:21,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:21,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:32:21,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:32:21,371 INFO L87 Difference]: Start difference. First operand 597 states and 882 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) [2022-07-12 09:32:22,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:22,133 INFO L93 Difference]: Finished difference Result 898 states and 1296 transitions. [2022-07-12 09:32:22,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:32:22,134 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 [2022-07-12 09:32:22,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:22,138 INFO L225 Difference]: With dead ends: 898 [2022-07-12 09:32:22,138 INFO L226 Difference]: Without dead ends: 631 [2022-07-12 09:32:22,142 INFO L412 NwaCegarLoop]: 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 [2022-07-12 09:32:22,144 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 532 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:22,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 2703 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1436 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:32:22,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2022-07-12 09:32:22,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 602. [2022-07-12 09:32:22,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 507 states have (on average 1.485207100591716) internal successors, (753), 516 states have internal predecessors, (753), 61 states have call successors, (61), 29 states have call predecessors, (61), 32 states have return successors, (71), 60 states have call predecessors, (71), 57 states have call successors, (71) [2022-07-12 09:32:22,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 885 transitions. [2022-07-12 09:32:22,182 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 885 transitions. Word has length 65 [2022-07-12 09:32:22,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:22,182 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 885 transitions. [2022-07-12 09:32:22,182 INFO L496 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) [2022-07-12 09:32:22,182 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 885 transitions. [2022-07-12 09:32:22,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:32:22,189 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:22,189 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:32:22,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:32:22,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:22,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:22,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1744111597, now seen corresponding path program 1 times [2022-07-12 09:32:22,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:22,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108081329] [2022-07-12 09:32:22,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:22,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:22,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:22,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:22,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:22,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:22,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:22,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:22,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:22,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:22,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:22,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108081329] [2022-07-12 09:32:22,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108081329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:22,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:22,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:32:22,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75275443] [2022-07-12 09:32:22,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:22,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:32:22,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:22,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:32:22,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:32:22,331 INFO L87 Difference]: Start difference. First operand 602 states and 885 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) [2022-07-12 09:32:23,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:23,089 INFO L93 Difference]: Finished difference Result 920 states and 1318 transitions. [2022-07-12 09:32:23,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:32:23,090 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 [2022-07-12 09:32:23,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:23,094 INFO L225 Difference]: With dead ends: 920 [2022-07-12 09:32:23,094 INFO L226 Difference]: Without dead ends: 648 [2022-07-12 09:32:23,095 INFO L412 NwaCegarLoop]: 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 [2022-07-12 09:32:23,102 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 532 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:23,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 2701 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:32:23,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-07-12 09:32:23,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 617. [2022-07-12 09:32:23,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 519 states have (on average 1.4739884393063585) internal successors, (765), 528 states have internal predecessors, (765), 61 states have call successors, (61), 29 states have call predecessors, (61), 35 states have return successors, (74), 63 states have call predecessors, (74), 57 states have call successors, (74) [2022-07-12 09:32:23,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 900 transitions. [2022-07-12 09:32:23,131 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 900 transitions. Word has length 65 [2022-07-12 09:32:23,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:23,132 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 900 transitions. [2022-07-12 09:32:23,132 INFO L496 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) [2022-07-12 09:32:23,132 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 900 transitions. [2022-07-12 09:32:23,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:32:23,133 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:23,133 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:32:23,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:32:23,133 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:23,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:23,134 INFO L85 PathProgramCache]: Analyzing trace with hash -357908203, now seen corresponding path program 1 times [2022-07-12 09:32:23,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:23,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149372877] [2022-07-12 09:32:23,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:23,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:23,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:23,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149372877] [2022-07-12 09:32:23,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149372877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:23,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:23,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:32:23,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560776700] [2022-07-12 09:32:23,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:23,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:32:23,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:23,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:32:23,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:32:23,226 INFO L87 Difference]: Start difference. First operand 617 states and 900 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) [2022-07-12 09:32:23,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:24,000 INFO L93 Difference]: Finished difference Result 1009 states and 1411 transitions. [2022-07-12 09:32:24,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 09:32:24,001 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 [2022-07-12 09:32:24,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:24,004 INFO L225 Difference]: With dead ends: 1009 [2022-07-12 09:32:24,004 INFO L226 Difference]: Without dead ends: 724 [2022-07-12 09:32:24,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-12 09:32:24,005 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 1207 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:24,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 2117 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:32:24,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-07-12 09:32:24,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 629. [2022-07-12 09:32:24,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 529 states have (on average 1.4650283553875236) internal successors, (775), 538 states have internal predecessors, (775), 62 states have call successors, (62), 30 states have call predecessors, (62), 36 states have return successors, (73), 64 states have call predecessors, (73), 58 states have call successors, (73) [2022-07-12 09:32:24,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 910 transitions. [2022-07-12 09:32:24,023 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 910 transitions. Word has length 65 [2022-07-12 09:32:24,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:24,023 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 910 transitions. [2022-07-12 09:32:24,023 INFO L496 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) [2022-07-12 09:32:24,023 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 910 transitions. [2022-07-12 09:32:24,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:32:24,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:24,024 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:32:24,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:32:24,025 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:24,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:24,025 INFO L85 PathProgramCache]: Analyzing trace with hash -491921709, now seen corresponding path program 1 times [2022-07-12 09:32:24,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:24,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883242039] [2022-07-12 09:32:24,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:24,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:24,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:24,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883242039] [2022-07-12 09:32:24,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883242039] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:24,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:24,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:24,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961744965] [2022-07-12 09:32:24,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:24,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:24,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:24,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:24,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:24,084 INFO L87 Difference]: Start difference. First operand 629 states and 910 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) [2022-07-12 09:32:24,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:24,420 INFO L93 Difference]: Finished difference Result 1271 states and 1757 transitions. [2022-07-12 09:32:24,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:32:24,420 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 [2022-07-12 09:32:24,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:24,424 INFO L225 Difference]: With dead ends: 1271 [2022-07-12 09:32:24,424 INFO L226 Difference]: Without dead ends: 975 [2022-07-12 09:32:24,425 INFO L412 NwaCegarLoop]: 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 [2022-07-12 09:32:24,426 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1472 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:24,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1477 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:32:24,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-07-12 09:32:24,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 919. [2022-07-12 09:32:24,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 753 states have (on average 1.4103585657370519) internal successors, (1062), 769 states have internal predecessors, (1062), 97 states have call successors, (97), 52 states have call predecessors, (97), 67 states have return successors, (130), 104 states have call predecessors, (130), 93 states have call successors, (130) [2022-07-12 09:32:24,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1289 transitions. [2022-07-12 09:32:24,452 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1289 transitions. Word has length 65 [2022-07-12 09:32:24,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:24,453 INFO L495 AbstractCegarLoop]: Abstraction has 919 states and 1289 transitions. [2022-07-12 09:32:24,453 INFO L496 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) [2022-07-12 09:32:24,453 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1289 transitions. [2022-07-12 09:32:24,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:32:24,455 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:24,455 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:32:24,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:32:24,455 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:24,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:24,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1681946624, now seen corresponding path program 1 times [2022-07-12 09:32:24,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:24,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68770701] [2022-07-12 09:32:24,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:24,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:24,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:24,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68770701] [2022-07-12 09:32:24,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68770701] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:24,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:24,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:32:24,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124642610] [2022-07-12 09:32:24,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:24,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:32:24,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:24,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:32:24,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:32:24,504 INFO L87 Difference]: Start difference. First operand 919 states and 1289 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) [2022-07-12 09:32:24,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:24,976 INFO L93 Difference]: Finished difference Result 2122 states and 2860 transitions. [2022-07-12 09:32:24,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:32:24,976 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 [2022-07-12 09:32:24,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:24,982 INFO L225 Difference]: With dead ends: 2122 [2022-07-12 09:32:24,982 INFO L226 Difference]: Without dead ends: 1515 [2022-07-12 09:32:24,983 INFO L412 NwaCegarLoop]: 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 [2022-07-12 09:32:24,984 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 1013 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:24,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 1443 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:32:24,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2022-07-12 09:32:25,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1400. [2022-07-12 09:32:25,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1132 states have (on average 1.3630742049469964) internal successors, (1543), 1151 states have internal predecessors, (1543), 142 states have call successors, (142), 96 states have call predecessors, (142), 124 states have return successors, (202), 159 states have call predecessors, (202), 138 states have call successors, (202) [2022-07-12 09:32:25,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1887 transitions. [2022-07-12 09:32:25,024 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1887 transitions. Word has length 66 [2022-07-12 09:32:25,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:25,024 INFO L495 AbstractCegarLoop]: Abstraction has 1400 states and 1887 transitions. [2022-07-12 09:32:25,025 INFO L496 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) [2022-07-12 09:32:25,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1887 transitions. [2022-07-12 09:32:25,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:32:25,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:25,026 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:32:25,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:32:25,026 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:25,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:25,027 INFO L85 PathProgramCache]: Analyzing trace with hash -223706965, now seen corresponding path program 1 times [2022-07-12 09:32:25,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:25,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164075052] [2022-07-12 09:32:25,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:25,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:25,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:25,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164075052] [2022-07-12 09:32:25,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164075052] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:25,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:25,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:32:25,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590247621] [2022-07-12 09:32:25,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:25,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:32:25,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:25,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:32:25,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:32:25,073 INFO L87 Difference]: Start difference. First operand 1400 states and 1887 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) [2022-07-12 09:32:25,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:25,409 INFO L93 Difference]: Finished difference Result 3588 states and 4693 transitions. [2022-07-12 09:32:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:32:25,409 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 [2022-07-12 09:32:25,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:25,418 INFO L225 Difference]: With dead ends: 3588 [2022-07-12 09:32:25,418 INFO L226 Difference]: Without dead ends: 2520 [2022-07-12 09:32:25,420 INFO L412 NwaCegarLoop]: 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 [2022-07-12 09:32:25,420 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 1175 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:25,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1205 Valid, 1479 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:32:25,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2022-07-12 09:32:25,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 2262. [2022-07-12 09:32:25,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2262 states, 1798 states have (on average 1.318131256952169) internal successors, (2370), 1827 states have internal predecessors, (2370), 240 states have call successors, (240), 180 states have call predecessors, (240), 222 states have return successors, (338), 261 states have call predecessors, (338), 236 states have call successors, (338) [2022-07-12 09:32:25,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 2948 transitions. [2022-07-12 09:32:25,486 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 2948 transitions. Word has length 66 [2022-07-12 09:32:25,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:25,486 INFO L495 AbstractCegarLoop]: Abstraction has 2262 states and 2948 transitions. [2022-07-12 09:32:25,486 INFO L496 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) [2022-07-12 09:32:25,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 2948 transitions. [2022-07-12 09:32:25,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 09:32:25,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:25,488 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:32:25,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:32:25,488 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:25,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:25,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1790634273, now seen corresponding path program 1 times [2022-07-12 09:32:25,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:25,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38274163] [2022-07-12 09:32:25,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:25,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:25,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:25,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38274163] [2022-07-12 09:32:25,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38274163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:25,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:25,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:32:25,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398993036] [2022-07-12 09:32:25,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:25,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:32:25,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:25,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:32:25,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:32:25,545 INFO L87 Difference]: Start difference. First operand 2262 states and 2948 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) [2022-07-12 09:32:25,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:25,879 INFO L93 Difference]: Finished difference Result 5172 states and 6598 transitions. [2022-07-12 09:32:25,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:32:25,880 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 [2022-07-12 09:32:25,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:25,891 INFO L225 Difference]: With dead ends: 5172 [2022-07-12 09:32:25,891 INFO L226 Difference]: Without dead ends: 3242 [2022-07-12 09:32:25,895 INFO L412 NwaCegarLoop]: 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 [2022-07-12 09:32:25,896 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 1160 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:25,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 1525 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:32:25,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3242 states. [2022-07-12 09:32:25,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3242 to 2994. [2022-07-12 09:32:25,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2994 states, 2366 states have (on average 1.2992392223161453) internal successors, (3074), 2403 states have internal predecessors, (3074), 320 states have call successors, (320), 250 states have call predecessors, (320), 306 states have return successors, (447), 347 states have call predecessors, (447), 316 states have call successors, (447) [2022-07-12 09:32:25,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2994 states to 2994 states and 3841 transitions. [2022-07-12 09:32:25,999 INFO L78 Accepts]: Start accepts. Automaton has 2994 states and 3841 transitions. Word has length 72 [2022-07-12 09:32:25,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:25,999 INFO L495 AbstractCegarLoop]: Abstraction has 2994 states and 3841 transitions. [2022-07-12 09:32:25,999 INFO L496 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) [2022-07-12 09:32:25,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2994 states and 3841 transitions. [2022-07-12 09:32:26,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 09:32:26,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:26,001 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:32:26,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:32:26,001 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:26,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:26,001 INFO L85 PathProgramCache]: Analyzing trace with hash -191825039, now seen corresponding path program 1 times [2022-07-12 09:32:26,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:26,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953923094] [2022-07-12 09:32:26,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:26,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:26,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:26,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953923094] [2022-07-12 09:32:26,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953923094] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:26,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:26,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:26,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617495179] [2022-07-12 09:32:26,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:26,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:26,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:26,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:26,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:26,050 INFO L87 Difference]: Start difference. First operand 2994 states and 3841 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) [2022-07-12 09:32:26,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:26,471 INFO L93 Difference]: Finished difference Result 3768 states and 4772 transitions. [2022-07-12 09:32:26,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:32:26,471 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 [2022-07-12 09:32:26,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:26,483 INFO L225 Difference]: With dead ends: 3768 [2022-07-12 09:32:26,483 INFO L226 Difference]: Without dead ends: 3765 [2022-07-12 09:32:26,485 INFO L412 NwaCegarLoop]: 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 [2022-07-12 09:32:26,485 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 1759 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:26,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1769 Valid, 1501 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:32:26,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2022-07-12 09:32:26,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3488. [2022-07-12 09:32:26,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3488 states, 2751 states have (on average 1.2889858233369684) internal successors, (3546), 2793 states have internal predecessors, (3546), 370 states have call successors, (370), 294 states have call predecessors, (370), 365 states have return successors, (526), 407 states have call predecessors, (526), 367 states have call successors, (526) [2022-07-12 09:32:26,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3488 states to 3488 states and 4442 transitions. [2022-07-12 09:32:26,588 INFO L78 Accepts]: Start accepts. Automaton has 3488 states and 4442 transitions. Word has length 73 [2022-07-12 09:32:26,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:26,588 INFO L495 AbstractCegarLoop]: Abstraction has 3488 states and 4442 transitions. [2022-07-12 09:32:26,588 INFO L496 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) [2022-07-12 09:32:26,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3488 states and 4442 transitions. [2022-07-12 09:32:26,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 09:32:26,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:26,589 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:32:26,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 09:32:26,590 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:26,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:26,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1652850327, now seen corresponding path program 1 times [2022-07-12 09:32:26,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:26,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490220046] [2022-07-12 09:32:26,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:26,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:26,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:26,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490220046] [2022-07-12 09:32:26,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490220046] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:32:26,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673174651] [2022-07-12 09:32:26,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:26,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:32:26,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:32:26,664 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) [2022-07-12 09:32:26,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 09:32:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 09:32:26,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:32:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:27,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:32:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:27,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673174651] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:32:27,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:32:27,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-12 09:32:27,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982750397] [2022-07-12 09:32:27,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:32:27,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:32:27,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:27,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:32:27,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:32:27,141 INFO L87 Difference]: Start difference. First operand 3488 states and 4442 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) [2022-07-12 09:32:28,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:28,373 INFO L93 Difference]: Finished difference Result 7929 states and 9928 transitions. [2022-07-12 09:32:28,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 09:32:28,374 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 [2022-07-12 09:32:28,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:28,399 INFO L225 Difference]: With dead ends: 7929 [2022-07-12 09:32:28,399 INFO L226 Difference]: Without dead ends: 7926 [2022-07-12 09:32:28,402 INFO L412 NwaCegarLoop]: 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 [2022-07-12 09:32:28,403 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 2185 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2254 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 1837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:28,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2254 Valid, 2542 Invalid, 1837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:32:28,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7926 states. [2022-07-12 09:32:28,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7926 to 5278. [2022-07-12 09:32:28,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5278 states, 4155 states have (on average 1.2808664259927798) internal successors, (5322), 4219 states have internal predecessors, (5322), 554 states have call successors, (554), 452 states have call predecessors, (554), 567 states have return successors, (804), 613 states have call predecessors, (804), 551 states have call successors, (804) [2022-07-12 09:32:28,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5278 states to 5278 states and 6680 transitions. [2022-07-12 09:32:28,666 INFO L78 Accepts]: Start accepts. Automaton has 5278 states and 6680 transitions. Word has length 74 [2022-07-12 09:32:28,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:28,666 INFO L495 AbstractCegarLoop]: Abstraction has 5278 states and 6680 transitions. [2022-07-12 09:32:28,667 INFO L496 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) [2022-07-12 09:32:28,667 INFO L276 IsEmpty]: Start isEmpty. Operand 5278 states and 6680 transitions. [2022-07-12 09:32:28,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 09:32:28,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:28,669 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:32:28,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 09:32:28,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-12 09:32:28,884 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:28,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:28,884 INFO L85 PathProgramCache]: Analyzing trace with hash 304935921, now seen corresponding path program 2 times [2022-07-12 09:32:28,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:28,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054141227] [2022-07-12 09:32:28,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:28,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:28,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:28,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:28,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:28,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:28,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:28,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:28,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:28,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:28,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:28,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054141227] [2022-07-12 09:32:28,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054141227] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:28,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:28,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:32:28,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028376658] [2022-07-12 09:32:28,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:28,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:32:28,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:28,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:32:28,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:32:28,945 INFO L87 Difference]: Start difference. First operand 5278 states and 6680 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) [2022-07-12 09:32:29,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:29,313 INFO L93 Difference]: Finished difference Result 7960 states and 10053 transitions. [2022-07-12 09:32:29,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 09:32:29,314 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 [2022-07-12 09:32:29,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:29,333 INFO L225 Difference]: With dead ends: 7960 [2022-07-12 09:32:29,334 INFO L226 Difference]: Without dead ends: 3885 [2022-07-12 09:32:29,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:32:29,342 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 1080 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:29,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 1629 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:32:29,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2022-07-12 09:32:29,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3650. [2022-07-12 09:32:29,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 2883 states have (on average 1.2702046479361775) internal successors, (3662), 2925 states have internal predecessors, (3662), 386 states have call successors, (386), 308 states have call predecessors, (386), 379 states have return successors, (530), 423 states have call predecessors, (530), 383 states have call successors, (530) [2022-07-12 09:32:29,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 4578 transitions. [2022-07-12 09:32:29,508 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 4578 transitions. Word has length 77 [2022-07-12 09:32:29,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:29,508 INFO L495 AbstractCegarLoop]: Abstraction has 3650 states and 4578 transitions. [2022-07-12 09:32:29,509 INFO L496 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) [2022-07-12 09:32:29,509 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 4578 transitions. [2022-07-12 09:32:29,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 09:32:29,511 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:29,511 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:32:29,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:32:29,511 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:29,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:29,511 INFO L85 PathProgramCache]: Analyzing trace with hash -385956453, now seen corresponding path program 1 times [2022-07-12 09:32:29,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:29,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598536092] [2022-07-12 09:32:29,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:29,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:29,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:29,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:29,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:29,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:29,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:29,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:29,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:29,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 09:32:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:29,561 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 09:32:29,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:29,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598536092] [2022-07-12 09:32:29,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598536092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:29,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:29,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:32:29,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581635971] [2022-07-12 09:32:29,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:29,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:32:29,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:29,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:32:29,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:32:29,563 INFO L87 Difference]: Start difference. First operand 3650 states and 4578 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) [2022-07-12 09:32:30,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:30,577 INFO L93 Difference]: Finished difference Result 10522 states and 12995 transitions. [2022-07-12 09:32:30,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 09:32:30,577 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 [2022-07-12 09:32:30,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:30,594 INFO L225 Difference]: With dead ends: 10522 [2022-07-12 09:32:30,594 INFO L226 Difference]: Without dead ends: 5885 [2022-07-12 09:32:30,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-12 09:32:30,603 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 1560 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:30,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1576 Valid, 1901 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:32:30,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5885 states. [2022-07-12 09:32:30,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5885 to 5565. [2022-07-12 09:32:30,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5565 states, 4341 states have (on average 1.2404975812024879) internal successors, (5385), 4426 states have internal predecessors, (5385), 590 states have call successors, (590), 482 states have call predecessors, (590), 632 states have return successors, (912), 663 states have call predecessors, (912), 587 states have call successors, (912) [2022-07-12 09:32:30,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5565 states to 5565 states and 6887 transitions. [2022-07-12 09:32:30,840 INFO L78 Accepts]: Start accepts. Automaton has 5565 states and 6887 transitions. Word has length 84 [2022-07-12 09:32:30,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:30,840 INFO L495 AbstractCegarLoop]: Abstraction has 5565 states and 6887 transitions. [2022-07-12 09:32:30,840 INFO L496 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) [2022-07-12 09:32:30,840 INFO L276 IsEmpty]: Start isEmpty. Operand 5565 states and 6887 transitions. [2022-07-12 09:32:30,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-12 09:32:30,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:30,845 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:32:30,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:32:30,845 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:30,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:30,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1773640047, now seen corresponding path program 1 times [2022-07-12 09:32:30,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:30,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978838005] [2022-07-12 09:32:30,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:30,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:30,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:30,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:30,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:30,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:30,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:30,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:30,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:30,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 09:32:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 09:32:30,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:30,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978838005] [2022-07-12 09:32:30,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978838005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:30,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:30,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:32:30,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027752410] [2022-07-12 09:32:30,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:30,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:32:30,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:30,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:32:30,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:32:30,920 INFO L87 Difference]: Start difference. First operand 5565 states and 6887 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) [2022-07-12 09:32:32,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:32,014 INFO L93 Difference]: Finished difference Result 9568 states and 11727 transitions. [2022-07-12 09:32:32,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 09:32:32,015 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 [2022-07-12 09:32:32,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:32,029 INFO L225 Difference]: With dead ends: 9568 [2022-07-12 09:32:32,029 INFO L226 Difference]: Without dead ends: 4975 [2022-07-12 09:32:32,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-12 09:32:32,039 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 2136 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2179 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:32,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2179 Valid, 2223 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:32:32,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4975 states. [2022-07-12 09:32:32,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4975 to 4641. [2022-07-12 09:32:32,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4641 states, 3630 states have (on average 1.2352617079889807) internal successors, (4484), 3697 states have internal predecessors, (4484), 491 states have call successors, (491), 397 states have call predecessors, (491), 518 states have return successors, (690), 553 states have call predecessors, (690), 488 states have call successors, (690) [2022-07-12 09:32:32,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4641 states to 4641 states and 5665 transitions. [2022-07-12 09:32:32,242 INFO L78 Accepts]: Start accepts. Automaton has 4641 states and 5665 transitions. Word has length 93 [2022-07-12 09:32:32,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:32,242 INFO L495 AbstractCegarLoop]: Abstraction has 4641 states and 5665 transitions. [2022-07-12 09:32:32,242 INFO L496 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) [2022-07-12 09:32:32,242 INFO L276 IsEmpty]: Start isEmpty. Operand 4641 states and 5665 transitions. [2022-07-12 09:32:32,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 09:32:32,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:32,246 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:32:32,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:32:32,247 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:32,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:32,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1026333805, now seen corresponding path program 1 times [2022-07-12 09:32:32,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:32,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750200183] [2022-07-12 09:32:32,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:32,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 09:32:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 09:32:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:32:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 09:32:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:32:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 09:32:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 09:32:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 09:32:32,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:32,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750200183] [2022-07-12 09:32:32,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750200183] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:32:32,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909989687] [2022-07-12 09:32:32,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:32,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:32:32,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:32:32,341 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) [2022-07-12 09:32:32,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 09:32:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 09:32:32,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:32:32,461 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 09:32:32,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:32:32,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909989687] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:32,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:32:32,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-12 09:32:32,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428709279] [2022-07-12 09:32:32,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:32,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:32:32,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:32,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:32:32,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 09:32:32,463 INFO L87 Difference]: Start difference. First operand 4641 states and 5665 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) [2022-07-12 09:32:32,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:32,566 INFO L93 Difference]: Finished difference Result 6807 states and 8288 transitions. [2022-07-12 09:32:32,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:32:32,567 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 [2022-07-12 09:32:32,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:32,578 INFO L225 Difference]: With dead ends: 6807 [2022-07-12 09:32:32,579 INFO L226 Difference]: Without dead ends: 2502 [2022-07-12 09:32:32,585 INFO L412 NwaCegarLoop]: 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 [2022-07-12 09:32:32,586 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 34 mSDsluCounter, 2412 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:32,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3025 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:32:32,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2022-07-12 09:32:32,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 2377. [2022-07-12 09:32:32,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2377 states, 1943 states have (on average 1.2506433350488935) internal successors, (2430), 1959 states have internal predecessors, (2430), 215 states have call successors, (215), 163 states have call predecessors, (215), 217 states have return successors, (297), 255 states have call predecessors, (297), 212 states have call successors, (297) [2022-07-12 09:32:32,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 2942 transitions. [2022-07-12 09:32:32,662 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 2942 transitions. Word has length 145 [2022-07-12 09:32:32,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:32,663 INFO L495 AbstractCegarLoop]: Abstraction has 2377 states and 2942 transitions. [2022-07-12 09:32:32,663 INFO L496 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) [2022-07-12 09:32:32,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 2942 transitions. [2022-07-12 09:32:32,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 09:32:32,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:32,667 INFO L195 NwaCegarLoop]: 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] [2022-07-12 09:32:32,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 09:32:32,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-12 09:32:32,889 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:32,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:32,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1451779089, now seen corresponding path program 1 times [2022-07-12 09:32:32,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:32,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571178442] [2022-07-12 09:32:32,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:32,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 09:32:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 09:32:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 09:32:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 09:32:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 09:32:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 09:32:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 09:32:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-12 09:32:32,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:32,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571178442] [2022-07-12 09:32:32,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571178442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:32,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:32,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:32:32,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091130159] [2022-07-12 09:32:32,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:32,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:32:32,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:32,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:32:32,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:32:32,954 INFO L87 Difference]: Start difference. First operand 2377 states and 2942 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) [2022-07-12 09:32:33,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:33,328 INFO L93 Difference]: Finished difference Result 2442 states and 3010 transitions. [2022-07-12 09:32:33,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:32:33,329 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 [2022-07-12 09:32:33,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:33,333 INFO L225 Difference]: With dead ends: 2442 [2022-07-12 09:32:33,333 INFO L226 Difference]: Without dead ends: 1999 [2022-07-12 09:32:33,334 INFO L412 NwaCegarLoop]: 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 [2022-07-12 09:32:33,334 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 633 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:33,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 1661 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:32:33,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2022-07-12 09:32:33,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1937. [2022-07-12 09:32:33,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1599 states have (on average 1.2670419011882426) internal successors, (2026), 1612 states have internal predecessors, (2026), 169 states have call successors, (169), 123 states have call predecessors, (169), 167 states have return successors, (233), 202 states have call predecessors, (233), 166 states have call successors, (233) [2022-07-12 09:32:33,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 2428 transitions. [2022-07-12 09:32:33,397 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 2428 transitions. Word has length 147 [2022-07-12 09:32:33,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:33,398 INFO L495 AbstractCegarLoop]: Abstraction has 1937 states and 2428 transitions. [2022-07-12 09:32:33,398 INFO L496 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) [2022-07-12 09:32:33,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 2428 transitions. [2022-07-12 09:32:33,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 09:32:33,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:33,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:33,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:32:33,401 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:33,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:33,401 INFO L85 PathProgramCache]: Analyzing trace with hash 835864378, now seen corresponding path program 1 times [2022-07-12 09:32:33,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:33,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429775676] [2022-07-12 09:32:33,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:33,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:33,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:33,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 09:32:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:33,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:32:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:33,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:32:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:33,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 09:32:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:33,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:33,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:33,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429775676] [2022-07-12 09:32:33,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429775676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:33,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:33,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:32:33,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632436850] [2022-07-12 09:32:33,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:33,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:32:33,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:33,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:32:33,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:32:33,483 INFO L87 Difference]: Start difference. First operand 1937 states and 2428 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:34,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:34,491 INFO L93 Difference]: Finished difference Result 2347 states and 3088 transitions. [2022-07-12 09:32:34,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:32:34,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-12 09:32:34,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:34,496 INFO L225 Difference]: With dead ends: 2347 [2022-07-12 09:32:34,496 INFO L226 Difference]: Without dead ends: 2046 [2022-07-12 09:32:34,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:32:34,498 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 919 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:34,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 1152 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:32:34,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2022-07-12 09:32:34,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1937. [2022-07-12 09:32:34,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1599 states have (on average 1.2664165103189493) internal successors, (2025), 1612 states have internal predecessors, (2025), 169 states have call successors, (169), 123 states have call predecessors, (169), 167 states have return successors, (233), 202 states have call predecessors, (233), 166 states have call successors, (233) [2022-07-12 09:32:34,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 2427 transitions. [2022-07-12 09:32:34,601 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 2427 transitions. Word has length 146 [2022-07-12 09:32:34,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:34,601 INFO L495 AbstractCegarLoop]: Abstraction has 1937 states and 2427 transitions. [2022-07-12 09:32:34,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:34,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 2427 transitions. [2022-07-12 09:32:34,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 09:32:34,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:34,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:34,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:32:34,604 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:34,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:34,605 INFO L85 PathProgramCache]: Analyzing trace with hash 417975676, now seen corresponding path program 1 times [2022-07-12 09:32:34,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:34,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270702991] [2022-07-12 09:32:34,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:34,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:34,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:34,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 09:32:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:34,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:32:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:34,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:32:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:34,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 09:32:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:34,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:34,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:34,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270702991] [2022-07-12 09:32:34,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270702991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:34,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:34,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:32:34,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003777019] [2022-07-12 09:32:34,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:34,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:32:34,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:34,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:32:34,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:32:34,686 INFO L87 Difference]: Start difference. First operand 1937 states and 2427 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:36,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:36,479 INFO L93 Difference]: Finished difference Result 2751 states and 3738 transitions. [2022-07-12 09:32:36,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:32:36,479 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-12 09:32:36,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:36,484 INFO L225 Difference]: With dead ends: 2751 [2022-07-12 09:32:36,484 INFO L226 Difference]: Without dead ends: 2459 [2022-07-12 09:32:36,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:32:36,485 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1442 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:36,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1633 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 09:32:36,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states. [2022-07-12 09:32:36,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 2240. [2022-07-12 09:32:36,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 1877 states have (on average 1.3148641449120937) internal successors, (2468), 1891 states have internal predecessors, (2468), 187 states have call successors, (187), 129 states have call predecessors, (187), 174 states have return successors, (254), 220 states have call predecessors, (254), 184 states have call successors, (254) [2022-07-12 09:32:36,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 2909 transitions. [2022-07-12 09:32:36,578 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 2909 transitions. Word has length 146 [2022-07-12 09:32:36,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:36,579 INFO L495 AbstractCegarLoop]: Abstraction has 2240 states and 2909 transitions. [2022-07-12 09:32:36,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:36,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 2909 transitions. [2022-07-12 09:32:36,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 09:32:36,582 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:36,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:36,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:32:36,582 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:36,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:36,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1383489928, now seen corresponding path program 1 times [2022-07-12 09:32:36,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:36,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241182360] [2022-07-12 09:32:36,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:36,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 09:32:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:32:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:32:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 09:32:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:36,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:36,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241182360] [2022-07-12 09:32:36,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241182360] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:36,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:36,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:36,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881281457] [2022-07-12 09:32:36,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:36,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:36,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:36,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:36,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:36,664 INFO L87 Difference]: Start difference. First operand 2240 states and 2909 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:38,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:38,744 INFO L93 Difference]: Finished difference Result 3479 states and 4905 transitions. [2022-07-12 09:32:38,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:32:38,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-12 09:32:38,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:38,756 INFO L225 Difference]: With dead ends: 3479 [2022-07-12 09:32:38,756 INFO L226 Difference]: Without dead ends: 2884 [2022-07-12 09:32:38,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:32:38,758 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 1538 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 2018 SdHoareTripleChecker+Invalid, 2521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:38,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1564 Valid, 2018 Invalid, 2521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 09:32:38,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2022-07-12 09:32:38,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2522. [2022-07-12 09:32:38,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2522 states, 2134 states have (on average 1.344423617619494) internal successors, (2869), 2149 states have internal predecessors, (2869), 205 states have call successors, (205), 135 states have call predecessors, (205), 181 states have return successors, (274), 239 states have call predecessors, (274), 202 states have call successors, (274) [2022-07-12 09:32:38,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 3348 transitions. [2022-07-12 09:32:38,911 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 3348 transitions. Word has length 146 [2022-07-12 09:32:38,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:38,912 INFO L495 AbstractCegarLoop]: Abstraction has 2522 states and 3348 transitions. [2022-07-12 09:32:38,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:38,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 3348 transitions. [2022-07-12 09:32:38,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 09:32:38,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:38,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:38,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 09:32:38,917 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:38,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:38,918 INFO L85 PathProgramCache]: Analyzing trace with hash -2090086534, now seen corresponding path program 1 times [2022-07-12 09:32:38,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:38,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088362871] [2022-07-12 09:32:38,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:38,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:38,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:38,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 09:32:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:38,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:32:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:39,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:32:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:39,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 09:32:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:39,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:39,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:39,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088362871] [2022-07-12 09:32:39,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088362871] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:39,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:39,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:39,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424093078] [2022-07-12 09:32:39,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:39,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:39,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:39,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:39,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:39,010 INFO L87 Difference]: Start difference. First operand 2522 states and 3348 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:41,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:41,228 INFO L93 Difference]: Finished difference Result 4552 states and 6612 transitions. [2022-07-12 09:32:41,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:32:41,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-12 09:32:41,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:41,236 INFO L225 Difference]: With dead ends: 4552 [2022-07-12 09:32:41,236 INFO L226 Difference]: Without dead ends: 3675 [2022-07-12 09:32:41,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:32:41,241 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 1459 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 2629 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:41,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 2702 Invalid, 2745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2629 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 09:32:41,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3675 states. [2022-07-12 09:32:41,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3675 to 3087. [2022-07-12 09:32:41,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3087 states, 2649 states have (on average 1.3861834654586636) internal successors, (3672), 2666 states have internal predecessors, (3672), 241 states have call successors, (241), 147 states have call predecessors, (241), 195 states have return successors, (318), 277 states have call predecessors, (318), 238 states have call successors, (318) [2022-07-12 09:32:41,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 4231 transitions. [2022-07-12 09:32:41,384 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 4231 transitions. Word has length 146 [2022-07-12 09:32:41,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:41,384 INFO L495 AbstractCegarLoop]: Abstraction has 3087 states and 4231 transitions. [2022-07-12 09:32:41,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:41,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 4231 transitions. [2022-07-12 09:32:41,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 09:32:41,395 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:41,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:41,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 09:32:41,396 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:41,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:41,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1143048648, now seen corresponding path program 1 times [2022-07-12 09:32:41,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:41,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18650402] [2022-07-12 09:32:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:41,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:41,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 09:32:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:41,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:32:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:41,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:32:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:41,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 09:32:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:41,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:41,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18650402] [2022-07-12 09:32:41,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18650402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:41,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:41,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:41,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318031500] [2022-07-12 09:32:41,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:41,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:41,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:41,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:41,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:41,487 INFO L87 Difference]: Start difference. First operand 3087 states and 4231 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:43,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:43,795 INFO L93 Difference]: Finished difference Result 6617 states and 9879 transitions. [2022-07-12 09:32:43,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:32:43,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-12 09:32:43,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:43,808 INFO L225 Difference]: With dead ends: 6617 [2022-07-12 09:32:43,809 INFO L226 Difference]: Without dead ends: 5175 [2022-07-12 09:32:43,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:32:43,815 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 1451 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 2632 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 2748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:43,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 2696 Invalid, 2748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2632 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 09:32:43,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5175 states. [2022-07-12 09:32:44,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5175 to 4218. [2022-07-12 09:32:44,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4218 states, 3680 states have (on average 1.4342391304347826) internal successors, (5278), 3701 states have internal predecessors, (5278), 313 states have call successors, (313), 171 states have call predecessors, (313), 223 states have return successors, (412), 353 states have call predecessors, (412), 310 states have call successors, (412) [2022-07-12 09:32:44,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4218 states to 4218 states and 6003 transitions. [2022-07-12 09:32:44,052 INFO L78 Accepts]: Start accepts. Automaton has 4218 states and 6003 transitions. Word has length 146 [2022-07-12 09:32:44,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:44,052 INFO L495 AbstractCegarLoop]: Abstraction has 4218 states and 6003 transitions. [2022-07-12 09:32:44,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:44,052 INFO L276 IsEmpty]: Start isEmpty. Operand 4218 states and 6003 transitions. [2022-07-12 09:32:44,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 09:32:44,056 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:44,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:44,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 09:32:44,057 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:44,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:44,057 INFO L85 PathProgramCache]: Analyzing trace with hash -281215046, now seen corresponding path program 1 times [2022-07-12 09:32:44,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:44,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573846959] [2022-07-12 09:32:44,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:44,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:44,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:44,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 09:32:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:44,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:32:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:44,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:32:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:44,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 09:32:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:44,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:44,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:44,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573846959] [2022-07-12 09:32:44,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573846959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:44,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:44,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:44,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7258405] [2022-07-12 09:32:44,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:44,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:44,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:44,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:44,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:44,137 INFO L87 Difference]: Start difference. First operand 4218 states and 6003 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:46,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:46,481 INFO L93 Difference]: Finished difference Result 10746 states and 16429 transitions. [2022-07-12 09:32:46,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:32:46,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-12 09:32:46,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:46,499 INFO L225 Difference]: With dead ends: 10746 [2022-07-12 09:32:46,499 INFO L226 Difference]: Without dead ends: 8173 [2022-07-12 09:32:46,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:32:46,506 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 1447 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 2627 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 2743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:46,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 2692 Invalid, 2743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2627 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 09:32:46,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8173 states. [2022-07-12 09:32:46,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8173 to 6485. [2022-07-12 09:32:46,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6485 states, 5747 states have (on average 1.4783365234035148) internal successors, (8496), 5776 states have internal predecessors, (8496), 457 states have call successors, (457), 219 states have call predecessors, (457), 279 states have return successors, (618), 505 states have call predecessors, (618), 454 states have call successors, (618) [2022-07-12 09:32:46,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6485 states to 6485 states and 9571 transitions. [2022-07-12 09:32:46,873 INFO L78 Accepts]: Start accepts. Automaton has 6485 states and 9571 transitions. Word has length 146 [2022-07-12 09:32:46,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:46,873 INFO L495 AbstractCegarLoop]: Abstraction has 6485 states and 9571 transitions. [2022-07-12 09:32:46,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:46,873 INFO L276 IsEmpty]: Start isEmpty. Operand 6485 states and 9571 transitions. [2022-07-12 09:32:46,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 09:32:46,878 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:46,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:46,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 09:32:46,878 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:46,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:46,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1963343352, now seen corresponding path program 1 times [2022-07-12 09:32:46,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:46,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327560570] [2022-07-12 09:32:46,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:46,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:46,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:46,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 09:32:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:46,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:32:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:46,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:32:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:46,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 09:32:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:46,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:46,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:46,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327560570] [2022-07-12 09:32:46,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327560570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:46,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:46,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:46,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208434805] [2022-07-12 09:32:46,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:46,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:46,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:46,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:46,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:46,957 INFO L87 Difference]: Start difference. First operand 6485 states and 9571 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:48,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:48,229 INFO L93 Difference]: Finished difference Result 13089 states and 20218 transitions. [2022-07-12 09:32:48,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:32:48,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-12 09:32:48,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:48,244 INFO L225 Difference]: With dead ends: 13089 [2022-07-12 09:32:48,244 INFO L226 Difference]: Without dead ends: 8249 [2022-07-12 09:32:48,253 INFO L412 NwaCegarLoop]: 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 [2022-07-12 09:32:48,254 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 1289 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:48,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 1387 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:32:48,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8249 states. [2022-07-12 09:32:48,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8249 to 6485. [2022-07-12 09:32:48,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6485 states, 5747 states have (on average 1.4753784583260832) internal successors, (8479), 5776 states have internal predecessors, (8479), 457 states have call successors, (457), 219 states have call predecessors, (457), 279 states have return successors, (618), 505 states have call predecessors, (618), 454 states have call successors, (618) [2022-07-12 09:32:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6485 states to 6485 states and 9554 transitions. [2022-07-12 09:32:48,590 INFO L78 Accepts]: Start accepts. Automaton has 6485 states and 9554 transitions. Word has length 146 [2022-07-12 09:32:48,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:48,591 INFO L495 AbstractCegarLoop]: Abstraction has 6485 states and 9554 transitions. [2022-07-12 09:32:48,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:48,591 INFO L276 IsEmpty]: Start isEmpty. Operand 6485 states and 9554 transitions. [2022-07-12 09:32:48,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 09:32:48,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:48,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:48,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 09:32:48,595 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:48,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:48,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1843576838, now seen corresponding path program 1 times [2022-07-12 09:32:48,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:48,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376561186] [2022-07-12 09:32:48,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:48,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:48,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:48,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 09:32:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:48,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:32:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:48,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:32:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:48,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 09:32:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:48,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:48,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:48,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376561186] [2022-07-12 09:32:48,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376561186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:48,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:48,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:48,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959143044] [2022-07-12 09:32:48,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:48,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:48,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:48,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:48,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:48,666 INFO L87 Difference]: Start difference. First operand 6485 states and 9554 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:50,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:50,102 INFO L93 Difference]: Finished difference Result 13071 states and 20132 transitions. [2022-07-12 09:32:50,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:32:50,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-12 09:32:50,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:50,122 INFO L225 Difference]: With dead ends: 13071 [2022-07-12 09:32:50,122 INFO L226 Difference]: Without dead ends: 8231 [2022-07-12 09:32:50,162 INFO L412 NwaCegarLoop]: 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 [2022-07-12 09:32:50,162 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 1106 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:50,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 1597 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:32:50,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8231 states. [2022-07-12 09:32:50,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8231 to 6485. [2022-07-12 09:32:50,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6485 states, 5747 states have (on average 1.4724203932486515) internal successors, (8462), 5776 states have internal predecessors, (8462), 457 states have call successors, (457), 219 states have call predecessors, (457), 279 states have return successors, (618), 505 states have call predecessors, (618), 454 states have call successors, (618) [2022-07-12 09:32:50,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6485 states to 6485 states and 9537 transitions. [2022-07-12 09:32:50,493 INFO L78 Accepts]: Start accepts. Automaton has 6485 states and 9537 transitions. Word has length 146 [2022-07-12 09:32:50,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:50,493 INFO L495 AbstractCegarLoop]: Abstraction has 6485 states and 9537 transitions. [2022-07-12 09:32:50,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:50,493 INFO L276 IsEmpty]: Start isEmpty. Operand 6485 states and 9537 transitions. [2022-07-12 09:32:50,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 09:32:50,498 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:50,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:50,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 09:32:50,499 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:50,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:50,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1358755256, now seen corresponding path program 1 times [2022-07-12 09:32:50,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:50,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749351144] [2022-07-12 09:32:50,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:50,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:50,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:50,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 09:32:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:50,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:32:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:50,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:32:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:50,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 09:32:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:50,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:50,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749351144] [2022-07-12 09:32:50,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749351144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:50,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:50,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:50,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945284632] [2022-07-12 09:32:50,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:50,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:50,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:50,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:50,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:50,591 INFO L87 Difference]: Start difference. First operand 6485 states and 9537 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:53,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:53,427 INFO L93 Difference]: Finished difference Result 18948 states and 29315 transitions. [2022-07-12 09:32:53,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:32:53,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-12 09:32:53,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:53,457 INFO L225 Difference]: With dead ends: 18948 [2022-07-12 09:32:53,458 INFO L226 Difference]: Without dead ends: 14108 [2022-07-12 09:32:53,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:32:53,469 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 1429 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 2568 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 2688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:53,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 2670 Invalid, 2688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2568 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 09:32:53,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14108 states. [2022-07-12 09:32:54,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14108 to 11081. [2022-07-12 09:32:54,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11081 states, 9943 states have (on average 1.5037714975359548) internal successors, (14952), 9988 states have internal predecessors, (14952), 745 states have call successors, (745), 315 states have call predecessors, (745), 391 states have return successors, (1084), 809 states have call predecessors, (1084), 742 states have call successors, (1084) [2022-07-12 09:32:54,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11081 states to 11081 states and 16781 transitions. [2022-07-12 09:32:54,110 INFO L78 Accepts]: Start accepts. Automaton has 11081 states and 16781 transitions. Word has length 146 [2022-07-12 09:32:54,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:54,110 INFO L495 AbstractCegarLoop]: Abstraction has 11081 states and 16781 transitions. [2022-07-12 09:32:54,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:54,110 INFO L276 IsEmpty]: Start isEmpty. Operand 11081 states and 16781 transitions. [2022-07-12 09:32:54,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 09:32:54,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:54,116 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:54,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 09:32:54,117 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:54,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:54,117 INFO L85 PathProgramCache]: Analyzing trace with hash -483720458, now seen corresponding path program 1 times [2022-07-12 09:32:54,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:54,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994473505] [2022-07-12 09:32:54,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:54,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:54,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:54,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 09:32:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:54,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:32:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:54,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:32:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:54,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 09:32:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:54,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:54,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994473505] [2022-07-12 09:32:54,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994473505] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:54,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:54,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:54,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269123502] [2022-07-12 09:32:54,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:54,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:54,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:54,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:54,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:54,193 INFO L87 Difference]: Start difference. First operand 11081 states and 16781 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:56,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:56,055 INFO L93 Difference]: Finished difference Result 23681 states and 37040 transitions. [2022-07-12 09:32:56,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:32:56,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-12 09:32:56,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:56,128 INFO L225 Difference]: With dead ends: 23681 [2022-07-12 09:32:56,128 INFO L226 Difference]: Without dead ends: 14245 [2022-07-12 09:32:56,142 INFO L412 NwaCegarLoop]: 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 [2022-07-12 09:32:56,143 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 1146 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:56,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 1566 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:32:56,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14245 states. [2022-07-12 09:32:56,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14245 to 11081. [2022-07-12 09:32:56,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11081 states, 9943 states have (on average 1.5004525797043147) internal successors, (14919), 9988 states have internal predecessors, (14919), 745 states have call successors, (745), 315 states have call predecessors, (745), 391 states have return successors, (1084), 809 states have call predecessors, (1084), 742 states have call successors, (1084) [2022-07-12 09:32:56,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11081 states to 11081 states and 16748 transitions. [2022-07-12 09:32:56,815 INFO L78 Accepts]: Start accepts. Automaton has 11081 states and 16748 transitions. Word has length 146 [2022-07-12 09:32:56,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:56,815 INFO L495 AbstractCegarLoop]: Abstraction has 11081 states and 16748 transitions. [2022-07-12 09:32:56,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:56,815 INFO L276 IsEmpty]: Start isEmpty. Operand 11081 states and 16748 transitions. [2022-07-12 09:32:56,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 09:32:56,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:56,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:56,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 09:32:56,821 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:56,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:56,821 INFO L85 PathProgramCache]: Analyzing trace with hash 2089244152, now seen corresponding path program 1 times [2022-07-12 09:32:56,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:56,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22229850] [2022-07-12 09:32:56,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:56,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:56,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:56,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 09:32:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:56,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:32:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:56,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:32:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:56,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 09:32:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:56,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:56,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:56,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22229850] [2022-07-12 09:32:56,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22229850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:56,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:56,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:56,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94798244] [2022-07-12 09:32:56,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:56,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:56,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:56,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:56,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:56,901 INFO L87 Difference]: Start difference. First operand 11081 states and 16748 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:01,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:01,562 INFO L93 Difference]: Finished difference Result 39748 states and 61999 transitions. [2022-07-12 09:33:01,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:33:01,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-12 09:33:01,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:01,637 INFO L225 Difference]: With dead ends: 39748 [2022-07-12 09:33:01,638 INFO L226 Difference]: Without dead ends: 30312 [2022-07-12 09:33:01,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:33:01,660 INFO L413 NwaCegarLoop]: 1030 mSDtfsCounter, 1514 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 2975 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 3097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:01,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1539 Valid, 2801 Invalid, 3097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2975 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 09:33:01,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30312 states. [2022-07-12 09:33:02,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30312 to 20235. [2022-07-12 09:33:03,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20235 states, 18329 states have (on average 1.520595777183698) internal successors, (27871), 18406 states have internal predecessors, (27871), 1289 states have call successors, (1289), 507 states have call predecessors, (1289), 615 states have return successors, (2146), 1385 states have call predecessors, (2146), 1286 states have call successors, (2146) [2022-07-12 09:33:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20235 states to 20235 states and 31306 transitions. [2022-07-12 09:33:03,039 INFO L78 Accepts]: Start accepts. Automaton has 20235 states and 31306 transitions. Word has length 146 [2022-07-12 09:33:03,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:03,039 INFO L495 AbstractCegarLoop]: Abstraction has 20235 states and 31306 transitions. [2022-07-12 09:33:03,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:03,039 INFO L276 IsEmpty]: Start isEmpty. Operand 20235 states and 31306 transitions. [2022-07-12 09:33:03,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 09:33:03,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:03,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:03,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 09:33:03,049 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:03,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:03,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1756601014, now seen corresponding path program 1 times [2022-07-12 09:33:03,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:03,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249919780] [2022-07-12 09:33:03,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:03,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:03,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:03,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 09:33:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:03,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:33:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:03,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:33:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:03,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 09:33:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:03,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:03,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249919780] [2022-07-12 09:33:03,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249919780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:03,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:03,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:03,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13807552] [2022-07-12 09:33:03,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:03,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:03,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:03,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:03,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:03,126 INFO L87 Difference]: Start difference. First operand 20235 states and 31306 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:10,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:10,548 INFO L93 Difference]: Finished difference Result 76036 states and 120035 transitions. [2022-07-12 09:33:10,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:33:10,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-12 09:33:10,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:10,709 INFO L225 Difference]: With dead ends: 76036 [2022-07-12 09:33:10,710 INFO L226 Difference]: Without dead ends: 57446 [2022-07-12 09:33:10,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:33:10,758 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 1749 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 2525 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1785 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:10,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1785 Valid, 2640 Invalid, 2650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2525 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 09:33:10,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57446 states. [2022-07-12 09:33:13,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57446 to 37868. [2022-07-12 09:33:13,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37868 states, 34458 states have (on average 1.5279180451564223) internal successors, (52649), 34599 states have internal predecessors, (52649), 2345 states have call successors, (2345), 891 states have call predecessors, (2345), 1063 states have return successors, (4724), 2505 states have call predecessors, (4724), 2342 states have call successors, (4724) [2022-07-12 09:33:13,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37868 states to 37868 states and 59718 transitions. [2022-07-12 09:33:13,818 INFO L78 Accepts]: Start accepts. Automaton has 37868 states and 59718 transitions. Word has length 146 [2022-07-12 09:33:13,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:13,818 INFO L495 AbstractCegarLoop]: Abstraction has 37868 states and 59718 transitions. [2022-07-12 09:33:13,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:13,819 INFO L276 IsEmpty]: Start isEmpty. Operand 37868 states and 59718 transitions. [2022-07-12 09:33:13,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 09:33:13,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:13,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:13,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 09:33:13,835 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:13,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:13,835 INFO L85 PathProgramCache]: Analyzing trace with hash -609434056, now seen corresponding path program 1 times [2022-07-12 09:33:13,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:13,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142730506] [2022-07-12 09:33:13,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:13,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 09:33:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:33:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:33:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 09:33:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:13,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:13,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142730506] [2022-07-12 09:33:13,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142730506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:13,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:13,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:13,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357800915] [2022-07-12 09:33:13,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:13,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:13,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:13,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:13,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:13,915 INFO L87 Difference]: Start difference. First operand 37868 states and 59718 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:27,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:27,473 INFO L93 Difference]: Finished difference Result 145507 states and 232641 transitions. [2022-07-12 09:33:27,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:33:27,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-12 09:33:27,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:27,848 INFO L225 Difference]: With dead ends: 145507 [2022-07-12 09:33:27,848 INFO L226 Difference]: Without dead ends: 109284 [2022-07-12 09:33:27,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:33:27,948 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 1492 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 2897 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 3019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:27,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 2763 Invalid, 3019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2897 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 09:33:28,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109284 states. [2022-07-12 09:33:33,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109284 to 73709. [2022-07-12 09:33:33,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73709 states, 67355 states have (on average 1.5354316680276148) internal successors, (103419), 67624 states have internal predecessors, (103419), 4393 states have call successors, (4393), 1659 states have call predecessors, (4393), 1959 states have return successors, (11274), 4681 states have call predecessors, (11274), 4390 states have call successors, (11274) [2022-07-12 09:33:34,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73709 states to 73709 states and 119086 transitions. [2022-07-12 09:33:34,129 INFO L78 Accepts]: Start accepts. Automaton has 73709 states and 119086 transitions. Word has length 146 [2022-07-12 09:33:34,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:34,130 INFO L495 AbstractCegarLoop]: Abstraction has 73709 states and 119086 transitions. [2022-07-12 09:33:34,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:34,130 INFO L276 IsEmpty]: Start isEmpty. Operand 73709 states and 119086 transitions. [2022-07-12 09:33:34,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 09:33:34,158 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:34,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:34,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 09:33:34,158 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:34,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:34,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1392452214, now seen corresponding path program 1 times [2022-07-12 09:33:34,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:34,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830122670] [2022-07-12 09:33:34,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:34,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:34,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:34,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 09:33:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:34,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:33:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:34,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:33:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:34,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 09:33:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:34,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:34,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830122670] [2022-07-12 09:33:34,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830122670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:34,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:34,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:34,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933959413] [2022-07-12 09:33:34,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:34,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:34,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:34,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:34,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:34,243 INFO L87 Difference]: Start difference. First operand 73709 states and 119086 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:58,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:58,848 INFO L93 Difference]: Finished difference Result 283874 states and 463239 transitions. [2022-07-12 09:33:58,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:33:58,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-12 09:33:58,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:59,517 INFO L225 Difference]: With dead ends: 283874 [2022-07-12 09:33:59,517 INFO L226 Difference]: Without dead ends: 211810 [2022-07-12 09:33:59,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:33:59,704 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 1670 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 2510 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:59,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1706 Valid, 2634 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2510 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 09:33:59,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211810 states. [2022-07-12 09:34:12,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211810 to 145262. [2022-07-12 09:34:12,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145262 states, 133148 states have (on average 1.540278487097065) internal successors, (205085), 133673 states have internal predecessors, (205085), 8361 states have call successors, (8361), 3195 states have call predecessors, (8361), 3751 states have return successors, (28620), 8905 states have call predecessors, (28620), 8358 states have call successors, (28620) [2022-07-12 09:34:12,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145262 states to 145262 states and 242066 transitions. [2022-07-12 09:34:12,821 INFO L78 Accepts]: Start accepts. Automaton has 145262 states and 242066 transitions. Word has length 146 [2022-07-12 09:34:12,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:34:12,821 INFO L495 AbstractCegarLoop]: Abstraction has 145262 states and 242066 transitions. [2022-07-12 09:34:12,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:34:12,822 INFO L276 IsEmpty]: Start isEmpty. Operand 145262 states and 242066 transitions. [2022-07-12 09:34:12,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 09:34:12,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:34:12,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:34:12,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 09:34:12,869 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:34:12,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:34:12,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1175370120, now seen corresponding path program 1 times [2022-07-12 09:34:12,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:34:12,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911438305] [2022-07-12 09:34:12,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:34:12,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:34:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:12,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:34:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:12,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 09:34:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:12,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 09:34:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:12,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:34:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:12,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 09:34:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:12,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:34:12,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:34:12,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911438305] [2022-07-12 09:34:12,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911438305] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:34:12,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:34:12,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:34:12,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659097986] [2022-07-12 09:34:12,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:34:12,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:34:12,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:34:12,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:34:12,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:34:12,947 INFO L87 Difference]: Start difference. First operand 145262 states and 242066 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)