./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.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 af1a65b4dba99a03062f9c0ef0e7df0ff9812521932f446bc475a13832d55c02 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:18:04,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:18:04,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:18:04,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:18:04,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:18:04,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:18:04,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:18:04,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:18:04,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:18:04,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:18:04,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:18:04,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:18:04,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:18:04,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:18:04,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:18:04,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:18:04,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:18:04,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:18:04,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:18:04,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:18:04,627 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:18:04,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:18:04,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:18:04,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:18:04,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:18:04,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:18:04,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:18:04,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:18:04,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:18:04,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:18:04,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:18:04,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:18:04,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:18:04,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:18:04,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:18:04,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:18:04,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:18:04,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:18:04,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:18:04,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:18:04,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:18:04,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:18:04,648 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:18:04,675 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:18:04,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:18:04,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:18:04,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:18:04,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:18:04,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:18:04,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:18:04,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:18:04,678 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:18:04,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:18:04,678 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:18:04,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:18:04,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:18:04,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:18:04,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:18:04,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:18:04,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:18:04,679 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:18:04,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:18:04,680 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:18:04,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:18:04,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:18:04,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:18:04,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:18:04,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:18:04,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:18:04,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:18:04,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:18:04,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:18:04,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:18:04,682 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:18:04,682 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:18:04,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:18:04,682 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af1a65b4dba99a03062f9c0ef0e7df0ff9812521932f446bc475a13832d55c02 [2022-07-13 21:18:04,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:18:04,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:18:04,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:18:04,895 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:18:04,895 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:18:04,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c [2022-07-13 21:18:04,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c026b123/e3f0300186384fc0af296d082817d44e/FLAG5f038dbb3 [2022-07-13 21:18:05,359 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:18:05,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c [2022-07-13 21:18:05,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c026b123/e3f0300186384fc0af296d082817d44e/FLAG5f038dbb3 [2022-07-13 21:18:05,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c026b123/e3f0300186384fc0af296d082817d44e [2022-07-13 21:18:05,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:18:05,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:18:05,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:18:05,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:18:05,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:18:05,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:18:05" (1/1) ... [2022-07-13 21:18:05,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fcd4704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:18:05, skipping insertion in model container [2022-07-13 21:18:05,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:18:05" (1/1) ... [2022-07-13 21:18:05,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:18:05,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:18:05,942 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c[911,924] [2022-07-13 21:18:06,009 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c[8416,8429] [2022-07-13 21:18:06,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:18:06,128 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:18:06,135 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c[911,924] [2022-07-13 21:18:06,153 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c[8416,8429] [2022-07-13 21:18:06,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:18:06,203 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:18:06,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:18:06 WrapperNode [2022-07-13 21:18:06,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:18:06,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:18:06,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:18:06,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:18:06,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:18:06" (1/1) ... [2022-07-13 21:18:06,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:18:06" (1/1) ... [2022-07-13 21:18:06,269 INFO L137 Inliner]: procedures = 81, calls = 101, calls flagged for inlining = 49, calls inlined = 49, statements flattened = 1139 [2022-07-13 21:18:06,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:18:06,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:18:06,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:18:06,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:18:06,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:18:06" (1/1) ... [2022-07-13 21:18:06,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:18:06" (1/1) ... [2022-07-13 21:18:06,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:18:06" (1/1) ... [2022-07-13 21:18:06,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:18:06" (1/1) ... [2022-07-13 21:18:06,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:18:06" (1/1) ... [2022-07-13 21:18:06,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:18:06" (1/1) ... [2022-07-13 21:18:06,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:18:06" (1/1) ... [2022-07-13 21:18:06,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:18:06,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:18:06,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:18:06,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:18:06,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:18:06" (1/1) ... [2022-07-13 21:18:06,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:18:06,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:18:06,349 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) [2022-07-13 21:18:06,352 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 [2022-07-13 21:18:06,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:18:06,377 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 21:18:06,377 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 21:18:06,378 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-13 21:18:06,378 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-13 21:18:06,378 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-13 21:18:06,378 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-13 21:18:06,378 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-13 21:18:06,378 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-13 21:18:06,378 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-13 21:18:06,378 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-13 21:18:06,379 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-13 21:18:06,379 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-13 21:18:06,379 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-13 21:18:06,379 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-13 21:18:06,379 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-13 21:18:06,379 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-13 21:18:06,379 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-13 21:18:06,379 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-13 21:18:06,380 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-13 21:18:06,380 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-13 21:18:06,380 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-13 21:18:06,380 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-13 21:18:06,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:18:06,380 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-13 21:18:06,380 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-13 21:18:06,380 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-13 21:18:06,381 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-13 21:18:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:18:06,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:18:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-13 21:18:06,381 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-13 21:18:06,381 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-13 21:18:06,381 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-13 21:18:06,523 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:18:06,540 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:18:07,177 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-13 21:18:07,177 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-07-13 21:18:07,243 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:18:07,251 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:18:07,251 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-07-13 21:18:07,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:18:07 BoogieIcfgContainer [2022-07-13 21:18:07,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:18:07,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:18:07,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:18:07,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:18:07,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:18:05" (1/3) ... [2022-07-13 21:18:07,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304e0fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:18:07, skipping insertion in model container [2022-07-13 21:18:07,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:18:06" (2/3) ... [2022-07-13 21:18:07,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304e0fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:18:07, skipping insertion in model container [2022-07-13 21:18:07,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:18:07" (3/3) ... [2022-07-13 21:18:07,261 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.15.cil.c [2022-07-13 21:18:07,272 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:18:07,273 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:18:07,320 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:18:07,325 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@5026a737, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5aa47c81 [2022-07-13 21:18:07,325 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:18:07,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 530 states, 467 states have (on average 1.6445396145610278) internal successors, (768), 475 states have internal predecessors, (768), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-13 21:18:07,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:18:07,340 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:07,341 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] [2022-07-13 21:18:07,341 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:07,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:07,346 INFO L85 PathProgramCache]: Analyzing trace with hash -103676450, now seen corresponding path program 1 times [2022-07-13 21:18:07,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:07,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117562904] [2022-07-13 21:18:07,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:07,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:07,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:07,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:18:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:07,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:18:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:07,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:18:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:07,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:18:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:07,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:18:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:07,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:18:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:07,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:07,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:07,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117562904] [2022-07-13 21:18:07,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117562904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:07,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:07,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:18:07,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661216197] [2022-07-13 21:18:07,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:07,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:18:07,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:07,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:18:07,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:18:07,664 INFO L87 Difference]: Start difference. First operand has 530 states, 467 states have (on average 1.6445396145610278) internal successors, (768), 475 states have internal predecessors, (768), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) 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) [2022-07-13 21:18:08,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:08,693 INFO L93 Difference]: Finished difference Result 1181 states and 1901 transitions. [2022-07-13 21:18:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:18:08,695 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 [2022-07-13 21:18:08,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:08,712 INFO L225 Difference]: With dead ends: 1181 [2022-07-13 21:18:08,712 INFO L226 Difference]: Without dead ends: 670 [2022-07-13 21:18:08,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:18:08,724 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 1720 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 2345 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:08,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 2345 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:18:08,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-07-13 21:18:08,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 631. [2022-07-13 21:18:08,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 549 states have (on average 1.53551912568306) internal successors, (843), 556 states have internal predecessors, (843), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (59), 55 states have call predecessors, (59), 54 states have call successors, (59) [2022-07-13 21:18:08,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 960 transitions. [2022-07-13 21:18:08,814 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 960 transitions. Word has length 65 [2022-07-13 21:18:08,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:08,815 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 960 transitions. [2022-07-13 21:18:08,816 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) [2022-07-13 21:18:08,817 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 960 transitions. [2022-07-13 21:18:08,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:18:08,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:08,826 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] [2022-07-13 21:18:08,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:18:08,827 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:08,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:08,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1575212190, now seen corresponding path program 1 times [2022-07-13 21:18:08,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:08,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524787163] [2022-07-13 21:18:08,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:08,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:08,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:08,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:18:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:08,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:18:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:08,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:18:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:08,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:18:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:09,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:18:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:09,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:18:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:09,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:09,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:09,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524787163] [2022-07-13 21:18:09,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524787163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:09,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:09,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:18:09,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786266426] [2022-07-13 21:18:09,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:09,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:18:09,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:09,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:18:09,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:18:09,023 INFO L87 Difference]: Start difference. First operand 631 states and 960 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-13 21:18:10,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:10,743 INFO L93 Difference]: Finished difference Result 1664 states and 2420 transitions. [2022-07-13 21:18:10,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 21:18:10,744 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-07-13 21:18:10,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:10,749 INFO L225 Difference]: With dead ends: 1664 [2022-07-13 21:18:10,749 INFO L226 Difference]: Without dead ends: 1443 [2022-07-13 21:18:10,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-13 21:18:10,751 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 4057 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 674 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4077 SdHoareTripleChecker+Valid, 3427 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 674 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:10,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4077 Valid, 3427 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [674 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:18:10,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2022-07-13 21:18:10,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1304. [2022-07-13 21:18:10,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1092 states have (on average 1.4487179487179487) internal successors, (1582), 1107 states have internal predecessors, (1582), 129 states have call successors, (129), 75 states have call predecessors, (129), 81 states have return successors, (139), 123 states have call predecessors, (139), 125 states have call successors, (139) [2022-07-13 21:18:10,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1850 transitions. [2022-07-13 21:18:10,792 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1850 transitions. Word has length 65 [2022-07-13 21:18:10,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:10,792 INFO L495 AbstractCegarLoop]: Abstraction has 1304 states and 1850 transitions. [2022-07-13 21:18:10,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-13 21:18:10,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1850 transitions. [2022-07-13 21:18:10,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 21:18:10,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:10,794 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] [2022-07-13 21:18:10,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:18:10,794 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:10,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:10,795 INFO L85 PathProgramCache]: Analyzing trace with hash -74351947, now seen corresponding path program 1 times [2022-07-13 21:18:10,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:10,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364546184] [2022-07-13 21:18:10,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:10,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:10,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:10,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:18:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:10,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:18:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:10,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:18:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:10,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:18:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:10,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 21:18:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:10,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 21:18:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:10,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:10,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:10,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364546184] [2022-07-13 21:18:10,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364546184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:10,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:10,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:18:10,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829565902] [2022-07-13 21:18:10,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:10,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:18:10,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:10,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:18:10,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:18:10,956 INFO L87 Difference]: Start difference. First operand 1304 states and 1850 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:18:11,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:11,978 INFO L93 Difference]: Finished difference Result 2330 states and 3244 transitions. [2022-07-13 21:18:11,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:18:11,979 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-13 21:18:11,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:11,984 INFO L225 Difference]: With dead ends: 2330 [2022-07-13 21:18:11,984 INFO L226 Difference]: Without dead ends: 1442 [2022-07-13 21:18:11,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:18:11,987 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 708 mSDsluCounter, 2724 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 3515 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:11,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 3515 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1839 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:18:11,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2022-07-13 21:18:12,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1334. [2022-07-13 21:18:12,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1116 states have (on average 1.4363799283154122) internal successors, (1603), 1131 states have internal predecessors, (1603), 129 states have call successors, (129), 75 states have call predecessors, (129), 87 states have return successors, (145), 129 states have call predecessors, (145), 125 states have call successors, (145) [2022-07-13 21:18:12,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1877 transitions. [2022-07-13 21:18:12,025 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1877 transitions. Word has length 66 [2022-07-13 21:18:12,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:12,025 INFO L495 AbstractCegarLoop]: Abstraction has 1334 states and 1877 transitions. [2022-07-13 21:18:12,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:18:12,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1877 transitions. [2022-07-13 21:18:12,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 21:18:12,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:12,026 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] [2022-07-13 21:18:12,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:18:12,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:12,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:12,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1103711245, now seen corresponding path program 1 times [2022-07-13 21:18:12,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:12,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420449302] [2022-07-13 21:18:12,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:12,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:12,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:12,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:18:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:12,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:18:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:12,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:18:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:12,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:18:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:12,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 21:18:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:12,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 21:18:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:12,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:12,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420449302] [2022-07-13 21:18:12,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420449302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:12,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:12,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:18:12,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580043171] [2022-07-13 21:18:12,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:12,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:18:12,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:12,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:18:12,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:18:12,130 INFO L87 Difference]: Start difference. First operand 1334 states and 1877 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-13 21:18:13,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:13,638 INFO L93 Difference]: Finished difference Result 3672 states and 5064 transitions. [2022-07-13 21:18:13,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 21:18:13,638 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-07-13 21:18:13,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:13,644 INFO L225 Difference]: With dead ends: 3672 [2022-07-13 21:18:13,644 INFO L226 Difference]: Without dead ends: 1577 [2022-07-13 21:18:13,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-13 21:18:13,649 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 4112 mSDsluCounter, 2528 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4132 SdHoareTripleChecker+Valid, 3450 SdHoareTripleChecker+Invalid, 2571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:13,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4132 Valid, 3450 Invalid, 2571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 1868 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 21:18:13,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2022-07-13 21:18:13,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1422. [2022-07-13 21:18:13,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1169 states have (on average 1.4029084687767321) internal successors, (1640), 1184 states have internal predecessors, (1640), 149 states have call successors, (149), 89 states have call predecessors, (149), 102 states have return successors, (166), 150 states have call predecessors, (166), 145 states have call successors, (166) [2022-07-13 21:18:13,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 1955 transitions. [2022-07-13 21:18:13,694 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 1955 transitions. Word has length 66 [2022-07-13 21:18:13,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:13,694 INFO L495 AbstractCegarLoop]: Abstraction has 1422 states and 1955 transitions. [2022-07-13 21:18:13,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-13 21:18:13,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 1955 transitions. [2022-07-13 21:18:13,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:18:13,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:13,695 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:13,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:18:13,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:13,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:13,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1875323271, now seen corresponding path program 1 times [2022-07-13 21:18:13,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:13,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486004251] [2022-07-13 21:18:13,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:13,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:13,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:13,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:18:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:13,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:18:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:13,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:18:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:13,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:18:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:13,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:18:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:13,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:18:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:13,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:18:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:13,798 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:18:13,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:13,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486004251] [2022-07-13 21:18:13,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486004251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:13,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:13,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:18:13,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578465251] [2022-07-13 21:18:13,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:13,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:18:13,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:13,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:18:13,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:18:13,800 INFO L87 Difference]: Start difference. First operand 1422 states and 1955 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:18:14,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:14,742 INFO L93 Difference]: Finished difference Result 2599 states and 3506 transitions. [2022-07-13 21:18:14,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:18:14,743 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2022-07-13 21:18:14,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:14,748 INFO L225 Difference]: With dead ends: 2599 [2022-07-13 21:18:14,748 INFO L226 Difference]: Without dead ends: 1593 [2022-07-13 21:18:14,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:18:14,750 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 700 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 3462 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:14,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 3462 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:18:14,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2022-07-13 21:18:14,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1462. [2022-07-13 21:18:14,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1201 states have (on average 1.3896752706078268) internal successors, (1669), 1216 states have internal predecessors, (1669), 149 states have call successors, (149), 89 states have call predecessors, (149), 110 states have return successors, (174), 158 states have call predecessors, (174), 145 states have call successors, (174) [2022-07-13 21:18:14,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 1992 transitions. [2022-07-13 21:18:14,792 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 1992 transitions. Word has length 91 [2022-07-13 21:18:14,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:14,793 INFO L495 AbstractCegarLoop]: Abstraction has 1462 states and 1992 transitions. [2022-07-13 21:18:14,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:18:14,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 1992 transitions. [2022-07-13 21:18:14,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:18:14,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:14,797 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:14,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:18:14,798 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:14,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:14,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1975743351, now seen corresponding path program 1 times [2022-07-13 21:18:14,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:14,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580155122] [2022-07-13 21:18:14,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:14,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:14,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:14,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:18:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:14,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:18:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:14,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:18:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:14,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:18:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:14,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:18:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:14,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:18:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:14,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:18:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:14,872 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:18:14,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:14,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580155122] [2022-07-13 21:18:14,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580155122] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:14,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:14,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:18:14,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042175891] [2022-07-13 21:18:14,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:14,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:18:14,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:14,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:18:14,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:18:14,875 INFO L87 Difference]: Start difference. First operand 1462 states and 1992 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:18:15,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:15,734 INFO L93 Difference]: Finished difference Result 3500 states and 4597 transitions. [2022-07-13 21:18:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 21:18:15,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-13 21:18:15,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:15,743 INFO L225 Difference]: With dead ends: 3500 [2022-07-13 21:18:15,743 INFO L226 Difference]: Without dead ends: 2455 [2022-07-13 21:18:15,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-13 21:18:15,746 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 1941 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:15,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1974 Valid, 2388 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:18:15,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2022-07-13 21:18:15,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2139. [2022-07-13 21:18:15,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2139 states, 1730 states have (on average 1.3485549132947976) internal successors, (2333), 1758 states have internal predecessors, (2333), 225 states have call successors, (225), 142 states have call predecessors, (225), 182 states have return successors, (287), 241 states have call predecessors, (287), 221 states have call successors, (287) [2022-07-13 21:18:15,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 2845 transitions. [2022-07-13 21:18:15,818 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 2845 transitions. Word has length 91 [2022-07-13 21:18:15,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:15,818 INFO L495 AbstractCegarLoop]: Abstraction has 2139 states and 2845 transitions. [2022-07-13 21:18:15,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:18:15,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 2845 transitions. [2022-07-13 21:18:15,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:18:15,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:15,820 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:15,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:18:15,820 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:15,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:15,821 INFO L85 PathProgramCache]: Analyzing trace with hash -36581305, now seen corresponding path program 1 times [2022-07-13 21:18:15,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:15,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899272021] [2022-07-13 21:18:15,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:15,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:15,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:15,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:18:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:15,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:18:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:15,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:18:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:15,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:18:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:15,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:18:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:15,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:18:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:15,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:18:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:15,872 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:18:15,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:15,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899272021] [2022-07-13 21:18:15,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899272021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:15,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:15,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:15,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595829871] [2022-07-13 21:18:15,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:15,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:15,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:15,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:15,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:15,874 INFO L87 Difference]: Start difference. First operand 2139 states and 2845 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-13 21:18:16,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:16,347 INFO L93 Difference]: Finished difference Result 5798 states and 7627 transitions. [2022-07-13 21:18:16,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:18:16,347 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-07-13 21:18:16,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:16,364 INFO L225 Difference]: With dead ends: 5798 [2022-07-13 21:18:16,365 INFO L226 Difference]: Without dead ends: 4078 [2022-07-13 21:18:16,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:18:16,370 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 1486 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:16,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 2298 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:18:16,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states. [2022-07-13 21:18:16,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 3858. [2022-07-13 21:18:16,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 3068 states have (on average 1.302477183833116) internal successors, (3996), 3132 states have internal predecessors, (3996), 418 states have call successors, (418), 276 states have call predecessors, (418), 370 states have return successors, (627), 454 states have call predecessors, (627), 414 states have call successors, (627) [2022-07-13 21:18:16,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 5041 transitions. [2022-07-13 21:18:16,511 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 5041 transitions. Word has length 91 [2022-07-13 21:18:16,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:16,512 INFO L495 AbstractCegarLoop]: Abstraction has 3858 states and 5041 transitions. [2022-07-13 21:18:16,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-13 21:18:16,512 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 5041 transitions. [2022-07-13 21:18:16,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:18:16,513 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:16,514 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:16,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:18:16,514 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:16,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:16,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1094419383, now seen corresponding path program 1 times [2022-07-13 21:18:16,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:16,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627464541] [2022-07-13 21:18:16,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:16,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:16,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:16,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:18:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:16,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:18:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:16,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:18:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:16,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:18:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:16,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:18:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:16,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:18:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:16,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:18:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:18:16,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:16,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627464541] [2022-07-13 21:18:16,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627464541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:16,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:16,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:18:16,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312645045] [2022-07-13 21:18:16,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:16,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:18:16,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:16,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:18:16,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:18:16,573 INFO L87 Difference]: Start difference. First operand 3858 states and 5041 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:18:17,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:17,078 INFO L93 Difference]: Finished difference Result 5696 states and 7344 transitions. [2022-07-13 21:18:17,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 21:18:17,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-13 21:18:17,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:17,086 INFO L225 Difference]: With dead ends: 5696 [2022-07-13 21:18:17,086 INFO L226 Difference]: Without dead ends: 2257 [2022-07-13 21:18:17,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:18:17,094 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 1160 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:17,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 1807 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 21:18:17,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2022-07-13 21:18:17,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2139. [2022-07-13 21:18:17,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2139 states, 1730 states have (on average 1.323699421965318) internal successors, (2290), 1758 states have internal predecessors, (2290), 225 states have call successors, (225), 142 states have call predecessors, (225), 182 states have return successors, (287), 241 states have call predecessors, (287), 221 states have call successors, (287) [2022-07-13 21:18:17,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 2802 transitions. [2022-07-13 21:18:17,167 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 2802 transitions. Word has length 91 [2022-07-13 21:18:17,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:17,167 INFO L495 AbstractCegarLoop]: Abstraction has 2139 states and 2802 transitions. [2022-07-13 21:18:17,167 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), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:18:17,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 2802 transitions. [2022-07-13 21:18:17,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 21:18:17,169 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:17,169 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:17,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:18:17,170 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:17,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:17,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1268013203, now seen corresponding path program 1 times [2022-07-13 21:18:17,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:17,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403854947] [2022-07-13 21:18:17,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:17,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:17,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:17,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:18:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:17,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:18:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:17,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:18:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:17,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:18:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:17,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:18:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:17,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:18:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:17,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 21:18:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:17,260 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 21:18:17,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:17,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403854947] [2022-07-13 21:18:17,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403854947] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:17,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:17,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:18:17,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437239719] [2022-07-13 21:18:17,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:17,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:18:17,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:17,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:18:17,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:18:17,263 INFO L87 Difference]: Start difference. First operand 2139 states and 2802 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) [2022-07-13 21:18:18,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:18,430 INFO L93 Difference]: Finished difference Result 4965 states and 6404 transitions. [2022-07-13 21:18:18,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-13 21:18:18,431 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-07-13 21:18:18,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:18,440 INFO L225 Difference]: With dead ends: 4965 [2022-07-13 21:18:18,440 INFO L226 Difference]: Without dead ends: 2938 [2022-07-13 21:18:18,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-13 21:18:18,443 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 2631 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2675 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:18,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2675 Valid, 2449 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:18:18,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2022-07-13 21:18:18,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2761. [2022-07-13 21:18:18,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2761 states, 2196 states have (on average 1.284608378870674) internal successors, (2821), 2232 states have internal predecessors, (2821), 303 states have call successors, (303), 190 states have call predecessors, (303), 260 states have return successors, (420), 341 states have call predecessors, (420), 299 states have call successors, (420) [2022-07-13 21:18:18,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2761 states to 2761 states and 3544 transitions. [2022-07-13 21:18:18,521 INFO L78 Accepts]: Start accepts. Automaton has 2761 states and 3544 transitions. Word has length 92 [2022-07-13 21:18:18,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:18,521 INFO L495 AbstractCegarLoop]: Abstraction has 2761 states and 3544 transitions. [2022-07-13 21:18:18,522 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) [2022-07-13 21:18:18,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2761 states and 3544 transitions. [2022-07-13 21:18:18,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 21:18:18,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:18,524 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:18,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:18:18,524 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:18,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:18,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1207382224, now seen corresponding path program 1 times [2022-07-13 21:18:18,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:18,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385918541] [2022-07-13 21:18:18,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:18,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:18:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:18:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:18:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:18:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:18:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:18:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 21:18:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:18:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 21:18:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 21:18:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:18:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:18:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 21:18:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 21:18:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 21:18:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-13 21:18:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,616 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-13 21:18:18,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:18,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385918541] [2022-07-13 21:18:18,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385918541] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:18:18,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198938654] [2022-07-13 21:18:18,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:18,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:18:18,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:18:18,618 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) [2022-07-13 21:18:18,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 21:18:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:18:18,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:18:18,895 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-13 21:18:18,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:18:18,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198938654] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:18,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:18:18,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-13 21:18:18,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832885064] [2022-07-13 21:18:18,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:18,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:18:18,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:18,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:18:18,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:18:18,897 INFO L87 Difference]: Start difference. First operand 2761 states and 3544 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 21:18:19,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:19,003 INFO L93 Difference]: Finished difference Result 7086 states and 8859 transitions. [2022-07-13 21:18:19,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:18:19,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2022-07-13 21:18:19,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:19,018 INFO L225 Difference]: With dead ends: 7086 [2022-07-13 21:18:19,018 INFO L226 Difference]: Without dead ends: 4898 [2022-07-13 21:18:19,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:18:19,023 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 61 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:19,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1569 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:18:19,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2022-07-13 21:18:19,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 4853. [2022-07-13 21:18:19,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4853 states, 3821 states have (on average 1.248102590944779) internal successors, (4769), 3886 states have internal predecessors, (4769), 537 states have call successors, (537), 372 states have call predecessors, (537), 493 states have return successors, (727), 597 states have call predecessors, (727), 533 states have call successors, (727) [2022-07-13 21:18:19,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4853 states to 4853 states and 6033 transitions. [2022-07-13 21:18:19,182 INFO L78 Accepts]: Start accepts. Automaton has 4853 states and 6033 transitions. Word has length 163 [2022-07-13 21:18:19,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:19,183 INFO L495 AbstractCegarLoop]: Abstraction has 4853 states and 6033 transitions. [2022-07-13 21:18:19,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 21:18:19,184 INFO L276 IsEmpty]: Start isEmpty. Operand 4853 states and 6033 transitions. [2022-07-13 21:18:19,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-13 21:18:19,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:19,187 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:19,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 21:18:19,403 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,SelfDestructingSolverStorable9 [2022-07-13 21:18:19,404 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:19,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:19,404 INFO L85 PathProgramCache]: Analyzing trace with hash -207723447, now seen corresponding path program 1 times [2022-07-13 21:18:19,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:19,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409080993] [2022-07-13 21:18:19,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:19,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:18:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:18:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:18:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:18:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:18:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:18:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 21:18:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:18:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 21:18:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 21:18:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:18:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:18:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 21:18:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 21:18:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 21:18:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:18:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:18:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-13 21:18:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-13 21:18:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-13 21:18:19,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:19,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409080993] [2022-07-13 21:18:19,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409080993] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:18:19,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121173810] [2022-07-13 21:18:19,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:19,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:18:19,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:18:19,492 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) [2022-07-13 21:18:19,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 21:18:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:18:19,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:18:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-13 21:18:19,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:18:19,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121173810] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:19,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:18:19,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-13 21:18:19,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591007985] [2022-07-13 21:18:19,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:19,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:18:19,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:19,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:18:19,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:18:19,766 INFO L87 Difference]: Start difference. First operand 4853 states and 6033 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 21:18:19,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:19,983 INFO L93 Difference]: Finished difference Result 13721 states and 16771 transitions. [2022-07-13 21:18:19,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:18:19,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 195 [2022-07-13 21:18:19,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:20,020 INFO L225 Difference]: With dead ends: 13721 [2022-07-13 21:18:20,020 INFO L226 Difference]: Without dead ends: 9287 [2022-07-13 21:18:20,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:18:20,032 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 52 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:20,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1569 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:18:20,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9287 states. [2022-07-13 21:18:20,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9287 to 9277. [2022-07-13 21:18:20,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9277 states, 7258 states have (on average 1.2241664370349958) internal successors, (8885), 7383 states have internal predecessors, (8885), 1037 states have call successors, (1037), 736 states have call predecessors, (1037), 980 states have return successors, (1420), 1160 states have call predecessors, (1420), 1033 states have call successors, (1420) [2022-07-13 21:18:20,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9277 states to 9277 states and 11342 transitions. [2022-07-13 21:18:20,360 INFO L78 Accepts]: Start accepts. Automaton has 9277 states and 11342 transitions. Word has length 195 [2022-07-13 21:18:20,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:20,360 INFO L495 AbstractCegarLoop]: Abstraction has 9277 states and 11342 transitions. [2022-07-13 21:18:20,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 21:18:20,361 INFO L276 IsEmpty]: Start isEmpty. Operand 9277 states and 11342 transitions. [2022-07-13 21:18:20,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-13 21:18:20,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:20,366 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:20,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 21:18:20,579 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,SelfDestructingSolverStorable10 [2022-07-13 21:18:20,580 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:20,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:20,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1105116725, now seen corresponding path program 1 times [2022-07-13 21:18:20,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:20,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930993766] [2022-07-13 21:18:20,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:20,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:18:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:18:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:18:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:18:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:18:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:18:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 21:18:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:18:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 21:18:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 21:18:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:18:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:18:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 21:18:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 21:18:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 21:18:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:18:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:18:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-13 21:18:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-13 21:18:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,685 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-13 21:18:20,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:20,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930993766] [2022-07-13 21:18:20,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930993766] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:18:20,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88792919] [2022-07-13 21:18:20,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:20,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:18:20,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:18:20,687 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:18:20,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 21:18:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:20,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:18:20,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:18:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 21:18:20,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:18:20,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88792919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:20,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:18:20,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-13 21:18:20,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615015363] [2022-07-13 21:18:20,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:20,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:18:20,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:20,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:18:20,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:18:20,976 INFO L87 Difference]: Start difference. First operand 9277 states and 11342 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-13 21:18:21,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:21,251 INFO L93 Difference]: Finished difference Result 15807 states and 19582 transitions. [2022-07-13 21:18:21,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:18:21,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 195 [2022-07-13 21:18:21,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:21,257 INFO L225 Difference]: With dead ends: 15807 [2022-07-13 21:18:21,257 INFO L226 Difference]: Without dead ends: 408 [2022-07-13 21:18:21,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:18:21,281 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 669 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:21,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 773 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:18:21,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-07-13 21:18:21,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2022-07-13 21:18:21,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 372 states have (on average 1.5833333333333333) internal successors, (589), 374 states have internal predecessors, (589), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-13 21:18:21,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 645 transitions. [2022-07-13 21:18:21,293 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 645 transitions. Word has length 195 [2022-07-13 21:18:21,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:21,294 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 645 transitions. [2022-07-13 21:18:21,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-13 21:18:21,294 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 645 transitions. [2022-07-13 21:18:21,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:21,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:21,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:21,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 21:18:21,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:18:21,511 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:21,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:21,511 INFO L85 PathProgramCache]: Analyzing trace with hash -397337084, now seen corresponding path program 1 times [2022-07-13 21:18:21,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:21,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955665461] [2022-07-13 21:18:21,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:21,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:21,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:21,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:21,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:21,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:21,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:21,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:21,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:21,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955665461] [2022-07-13 21:18:21,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955665461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:21,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:21,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:18:21,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604930574] [2022-07-13 21:18:21,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:21,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:18:21,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:21,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:18:21,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:18:21,620 INFO L87 Difference]: Start difference. First operand 408 states and 645 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2022-07-13 21:18:22,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:22,769 INFO L93 Difference]: Finished difference Result 957 states and 1535 transitions. [2022-07-13 21:18:22,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:18:22,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:22,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:22,791 INFO L225 Difference]: With dead ends: 957 [2022-07-13 21:18:22,791 INFO L226 Difference]: Without dead ends: 561 [2022-07-13 21:18:22,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:18:22,794 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 1110 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:22,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 1139 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:18:22,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-07-13 21:18:22,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 408. [2022-07-13 21:18:22,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 372 states have (on average 1.5806451612903225) internal successors, (588), 374 states have internal predecessors, (588), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-13 21:18:22,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 644 transitions. [2022-07-13 21:18:22,809 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 644 transitions. Word has length 190 [2022-07-13 21:18:22,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:22,809 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 644 transitions. [2022-07-13 21:18:22,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2022-07-13 21:18:22,809 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 644 transitions. [2022-07-13 21:18:22,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:22,810 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:22,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:22,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:18:22,811 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:22,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:22,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1996486142, now seen corresponding path program 1 times [2022-07-13 21:18:22,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:22,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688791644] [2022-07-13 21:18:22,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:22,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:22,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:22,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:22,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:22,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:22,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:22,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:22,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:22,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688791644] [2022-07-13 21:18:22,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688791644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:22,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:22,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:18:22,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931943713] [2022-07-13 21:18:22,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:22,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:18:22,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:22,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:18:22,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:18:22,930 INFO L87 Difference]: Start difference. First operand 408 states and 644 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2022-07-13 21:18:24,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:24,015 INFO L93 Difference]: Finished difference Result 949 states and 1518 transitions. [2022-07-13 21:18:24,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:18:24,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:24,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:24,017 INFO L225 Difference]: With dead ends: 949 [2022-07-13 21:18:24,018 INFO L226 Difference]: Without dead ends: 561 [2022-07-13 21:18:24,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:18:24,019 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 1101 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:24,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 1137 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:18:24,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-07-13 21:18:24,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 408. [2022-07-13 21:18:24,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 372 states have (on average 1.5779569892473118) internal successors, (587), 374 states have internal predecessors, (587), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-13 21:18:24,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 643 transitions. [2022-07-13 21:18:24,041 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 643 transitions. Word has length 190 [2022-07-13 21:18:24,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:24,041 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 643 transitions. [2022-07-13 21:18:24,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2022-07-13 21:18:24,041 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 643 transitions. [2022-07-13 21:18:24,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:24,042 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:24,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:24,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:18:24,043 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:24,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:24,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2086546432, now seen corresponding path program 1 times [2022-07-13 21:18:24,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:24,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115484192] [2022-07-13 21:18:24,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:24,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:24,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:24,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:24,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:24,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:24,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:24,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:24,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:24,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115484192] [2022-07-13 21:18:24,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115484192] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:24,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:24,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:18:24,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607924159] [2022-07-13 21:18:24,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:24,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:18:24,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:24,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:18:24,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:18:24,184 INFO L87 Difference]: Start difference. First operand 408 states and 643 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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) [2022-07-13 21:18:26,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:26,585 INFO L93 Difference]: Finished difference Result 1506 states and 2426 transitions. [2022-07-13 21:18:26,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:18:26,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:26,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:26,588 INFO L225 Difference]: With dead ends: 1506 [2022-07-13 21:18:26,588 INFO L226 Difference]: Without dead ends: 1120 [2022-07-13 21:18:26,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:18:26,589 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 1682 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 2213 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 2344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:26,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1702 Valid, 1960 Invalid, 2344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 21:18:26,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2022-07-13 21:18:26,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 813. [2022-07-13 21:18:26,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 748 states have (on average 1.5909090909090908) internal successors, (1190), 751 states have internal predecessors, (1190), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2022-07-13 21:18:26,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1293 transitions. [2022-07-13 21:18:26,625 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1293 transitions. Word has length 190 [2022-07-13 21:18:26,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:26,625 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 1293 transitions. [2022-07-13 21:18:26,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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) [2022-07-13 21:18:26,625 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1293 transitions. [2022-07-13 21:18:26,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:26,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:26,627 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:26,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:18:26,627 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:26,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:26,627 INFO L85 PathProgramCache]: Analyzing trace with hash 361394428, now seen corresponding path program 1 times [2022-07-13 21:18:26,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:26,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180109876] [2022-07-13 21:18:26,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:26,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:26,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:26,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:26,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:26,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:26,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:26,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:26,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180109876] [2022-07-13 21:18:26,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180109876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:26,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:26,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:26,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092338250] [2022-07-13 21:18:26,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:26,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:26,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:26,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:26,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:26,729 INFO L87 Difference]: Start difference. First operand 813 states and 1293 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:29,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:29,609 INFO L93 Difference]: Finished difference Result 2490 states and 4021 transitions. [2022-07-13 21:18:29,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:18:29,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:29,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:29,618 INFO L225 Difference]: With dead ends: 2490 [2022-07-13 21:18:29,619 INFO L226 Difference]: Without dead ends: 1699 [2022-07-13 21:18:29,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:18:29,620 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 1826 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 3006 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1846 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 3126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 3006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:29,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1846 Valid, 2231 Invalid, 3126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 3006 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 21:18:29,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2022-07-13 21:18:29,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1189. [2022-07-13 21:18:29,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 1095 states have (on average 1.5844748858447488) internal successors, (1735), 1099 states have internal predecessors, (1735), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2022-07-13 21:18:29,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1884 transitions. [2022-07-13 21:18:29,674 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1884 transitions. Word has length 190 [2022-07-13 21:18:29,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:29,674 INFO L495 AbstractCegarLoop]: Abstraction has 1189 states and 1884 transitions. [2022-07-13 21:18:29,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:29,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1884 transitions. [2022-07-13 21:18:29,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:29,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:29,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:29,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:18:29,676 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:29,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:29,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1561856002, now seen corresponding path program 1 times [2022-07-13 21:18:29,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:29,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378809173] [2022-07-13 21:18:29,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:29,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:29,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:29,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:29,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:29,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:29,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:29,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:29,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378809173] [2022-07-13 21:18:29,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378809173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:29,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:29,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:29,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951548007] [2022-07-13 21:18:29,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:29,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:29,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:29,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:29,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:29,806 INFO L87 Difference]: Start difference. First operand 1189 states and 1884 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:32,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:32,757 INFO L93 Difference]: Finished difference Result 3941 states and 6352 transitions. [2022-07-13 21:18:32,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:18:32,758 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:32,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:32,763 INFO L225 Difference]: With dead ends: 3941 [2022-07-13 21:18:32,763 INFO L226 Difference]: Without dead ends: 2774 [2022-07-13 21:18:32,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:18:32,767 INFO L413 NwaCegarLoop]: 1087 mSDtfsCounter, 1715 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 3352 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 3135 SdHoareTripleChecker+Invalid, 3442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:32,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1735 Valid, 3135 Invalid, 3442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 3352 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 21:18:32,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2022-07-13 21:18:32,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 1942. [2022-07-13 21:18:32,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1790 states have (on average 1.5787709497206703) internal successors, (2826), 1796 states have internal predecessors, (2826), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-13 21:18:32,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 3071 transitions. [2022-07-13 21:18:32,863 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 3071 transitions. Word has length 190 [2022-07-13 21:18:32,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:32,864 INFO L495 AbstractCegarLoop]: Abstraction has 1942 states and 3071 transitions. [2022-07-13 21:18:32,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:32,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 3071 transitions. [2022-07-13 21:18:32,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:32,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:32,865 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:32,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:18:32,866 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:32,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:32,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1008502972, now seen corresponding path program 1 times [2022-07-13 21:18:32,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:32,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007931640] [2022-07-13 21:18:32,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:32,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:32,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:32,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:32,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:32,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:32,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:32,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:32,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007931640] [2022-07-13 21:18:32,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007931640] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:32,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:32,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:32,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053186300] [2022-07-13 21:18:32,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:32,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:32,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:32,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:32,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:32,980 INFO L87 Difference]: Start difference. First operand 1942 states and 3071 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:34,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:34,402 INFO L93 Difference]: Finished difference Result 4682 states and 7530 transitions. [2022-07-13 21:18:34,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:18:34,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:34,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:34,409 INFO L225 Difference]: With dead ends: 4682 [2022-07-13 21:18:34,409 INFO L226 Difference]: Without dead ends: 2762 [2022-07-13 21:18:34,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:18:34,414 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 1392 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1429 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:34,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 1502 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1429 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 21:18:34,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2022-07-13 21:18:34,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 1942. [2022-07-13 21:18:34,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1790 states have (on average 1.5759776536312848) internal successors, (2821), 1796 states have internal predecessors, (2821), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-13 21:18:34,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 3066 transitions. [2022-07-13 21:18:34,524 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 3066 transitions. Word has length 190 [2022-07-13 21:18:34,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:34,524 INFO L495 AbstractCegarLoop]: Abstraction has 1942 states and 3066 transitions. [2022-07-13 21:18:34,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:34,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 3066 transitions. [2022-07-13 21:18:34,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:34,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:34,526 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:34,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 21:18:34,526 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:34,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:34,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1507059774, now seen corresponding path program 1 times [2022-07-13 21:18:34,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:34,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624036106] [2022-07-13 21:18:34,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:34,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:34,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:34,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:34,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:34,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:34,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:34,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:34,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:34,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624036106] [2022-07-13 21:18:34,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624036106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:34,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:34,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:34,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124307814] [2022-07-13 21:18:34,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:34,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:34,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:34,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:34,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:34,647 INFO L87 Difference]: Start difference. First operand 1942 states and 3066 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:35,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:35,998 INFO L93 Difference]: Finished difference Result 4676 states and 7504 transitions. [2022-07-13 21:18:35,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:18:35,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:35,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:36,005 INFO L225 Difference]: With dead ends: 4676 [2022-07-13 21:18:36,005 INFO L226 Difference]: Without dead ends: 2756 [2022-07-13 21:18:36,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:18:36,009 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 1393 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:36,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 1496 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:18:36,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2022-07-13 21:18:36,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 1942. [2022-07-13 21:18:36,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1790 states have (on average 1.5731843575418993) internal successors, (2816), 1796 states have internal predecessors, (2816), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-13 21:18:36,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 3061 transitions. [2022-07-13 21:18:36,161 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 3061 transitions. Word has length 190 [2022-07-13 21:18:36,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:36,162 INFO L495 AbstractCegarLoop]: Abstraction has 1942 states and 3061 transitions. [2022-07-13 21:18:36,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:36,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 3061 transitions. [2022-07-13 21:18:36,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:36,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:36,164 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:36,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 21:18:36,165 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:36,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:36,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2077331580, now seen corresponding path program 1 times [2022-07-13 21:18:36,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:36,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546127747] [2022-07-13 21:18:36,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:36,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:36,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:36,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:36,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:36,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:36,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:36,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:36,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546127747] [2022-07-13 21:18:36,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546127747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:36,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:36,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:36,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901423645] [2022-07-13 21:18:36,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:36,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:36,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:36,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:36,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:36,287 INFO L87 Difference]: Start difference. First operand 1942 states and 3061 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:39,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:39,405 INFO L93 Difference]: Finished difference Result 6711 states and 10723 transitions. [2022-07-13 21:18:39,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:18:39,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:39,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:39,415 INFO L225 Difference]: With dead ends: 6711 [2022-07-13 21:18:39,415 INFO L226 Difference]: Without dead ends: 4791 [2022-07-13 21:18:39,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:18:39,418 INFO L413 NwaCegarLoop]: 1063 mSDtfsCounter, 1693 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 3301 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:39,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 3111 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3301 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 21:18:39,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4791 states. [2022-07-13 21:18:39,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4791 to 3462. [2022-07-13 21:18:39,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3462 states, 3194 states have (on average 1.5685660613650594) internal successors, (5010), 3204 states have internal predecessors, (5010), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2022-07-13 21:18:39,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 5453 transitions. [2022-07-13 21:18:39,653 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 5453 transitions. Word has length 190 [2022-07-13 21:18:39,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:39,653 INFO L495 AbstractCegarLoop]: Abstraction has 3462 states and 5453 transitions. [2022-07-13 21:18:39,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:39,653 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 5453 transitions. [2022-07-13 21:18:39,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:39,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:39,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:39,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 21:18:39,656 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:39,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:39,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1291333690, now seen corresponding path program 1 times [2022-07-13 21:18:39,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:39,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148754297] [2022-07-13 21:18:39,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:39,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:39,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:39,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:39,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:39,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:39,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:39,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:39,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:39,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148754297] [2022-07-13 21:18:39,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148754297] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:39,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:39,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:39,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271607305] [2022-07-13 21:18:39,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:39,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:39,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:39,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:39,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:39,763 INFO L87 Difference]: Start difference. First operand 3462 states and 5453 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:43,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:43,200 INFO L93 Difference]: Finished difference Result 12289 states and 19601 transitions. [2022-07-13 21:18:43,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:18:43,201 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:43,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:43,221 INFO L225 Difference]: With dead ends: 12289 [2022-07-13 21:18:43,221 INFO L226 Difference]: Without dead ends: 8849 [2022-07-13 21:18:43,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:18:43,228 INFO L413 NwaCegarLoop]: 1058 mSDtfsCounter, 1692 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 3293 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 3387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:43,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1712 Valid, 3106 Invalid, 3387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3293 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 21:18:43,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8849 states. [2022-07-13 21:18:43,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8849 to 6503. [2022-07-13 21:18:43,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6503 states, 6003 states have (on average 1.565217391304348) internal successors, (9396), 6021 states have internal predecessors, (9396), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2022-07-13 21:18:43,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6503 states to 6503 states and 10253 transitions. [2022-07-13 21:18:43,746 INFO L78 Accepts]: Start accepts. Automaton has 6503 states and 10253 transitions. Word has length 190 [2022-07-13 21:18:43,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:43,746 INFO L495 AbstractCegarLoop]: Abstraction has 6503 states and 10253 transitions. [2022-07-13 21:18:43,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:43,746 INFO L276 IsEmpty]: Start isEmpty. Operand 6503 states and 10253 transitions. [2022-07-13 21:18:43,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:43,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:43,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:43,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 21:18:43,751 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:43,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:43,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1958715580, now seen corresponding path program 1 times [2022-07-13 21:18:43,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:43,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531113882] [2022-07-13 21:18:43,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:43,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:43,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:43,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:43,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:43,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:43,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:43,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:43,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:43,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531113882] [2022-07-13 21:18:43,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531113882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:43,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:43,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:43,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074250018] [2022-07-13 21:18:43,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:43,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:43,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:43,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:43,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:43,877 INFO L87 Difference]: Start difference. First operand 6503 states and 10253 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:48,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:48,113 INFO L93 Difference]: Finished difference Result 23440 states and 37407 transitions. [2022-07-13 21:18:48,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:18:48,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:48,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:48,154 INFO L225 Difference]: With dead ends: 23440 [2022-07-13 21:18:48,154 INFO L226 Difference]: Without dead ends: 16959 [2022-07-13 21:18:48,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:18:48,168 INFO L413 NwaCegarLoop]: 1053 mSDtfsCounter, 1691 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 3285 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 3101 SdHoareTripleChecker+Invalid, 3379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:48,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 3101 Invalid, 3379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3285 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 21:18:48,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16959 states. [2022-07-13 21:18:49,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16959 to 12600. [2022-07-13 21:18:49,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12600 states, 11636 states have (on average 1.5632519766242694) internal successors, (18190), 11670 states have internal predecessors, (18190), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-07-13 21:18:49,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12600 states to 12600 states and 19929 transitions. [2022-07-13 21:18:49,179 INFO L78 Accepts]: Start accepts. Automaton has 12600 states and 19929 transitions. Word has length 190 [2022-07-13 21:18:49,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:49,179 INFO L495 AbstractCegarLoop]: Abstraction has 12600 states and 19929 transitions. [2022-07-13 21:18:49,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:49,179 INFO L276 IsEmpty]: Start isEmpty. Operand 12600 states and 19929 transitions. [2022-07-13 21:18:49,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:49,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:49,185 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:49,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 21:18:49,185 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:49,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:49,185 INFO L85 PathProgramCache]: Analyzing trace with hash -236513286, now seen corresponding path program 1 times [2022-07-13 21:18:49,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:49,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223507548] [2022-07-13 21:18:49,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:49,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:49,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:49,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:49,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:49,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:49,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:49,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:49,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223507548] [2022-07-13 21:18:49,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223507548] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:49,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:49,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:49,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281080937] [2022-07-13 21:18:49,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:49,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:49,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:49,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:49,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:49,290 INFO L87 Difference]: Start difference. First operand 12600 states and 19929 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:52,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:52,080 INFO L93 Difference]: Finished difference Result 29786 states and 47788 transitions. [2022-07-13 21:18:52,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:18:52,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:52,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:52,127 INFO L225 Difference]: With dead ends: 29786 [2022-07-13 21:18:52,127 INFO L226 Difference]: Without dead ends: 17208 [2022-07-13 21:18:52,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:18:52,149 INFO L413 NwaCegarLoop]: 639 mSDtfsCounter, 1466 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:52,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 1443 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:18:52,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17208 states. [2022-07-13 21:18:53,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17208 to 12600. [2022-07-13 21:18:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12600 states, 11636 states have (on average 1.5604159504984532) internal successors, (18157), 11670 states have internal predecessors, (18157), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-07-13 21:18:53,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12600 states to 12600 states and 19896 transitions. [2022-07-13 21:18:53,239 INFO L78 Accepts]: Start accepts. Automaton has 12600 states and 19896 transitions. Word has length 190 [2022-07-13 21:18:53,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:53,240 INFO L495 AbstractCegarLoop]: Abstraction has 12600 states and 19896 transitions. [2022-07-13 21:18:53,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:53,240 INFO L276 IsEmpty]: Start isEmpty. Operand 12600 states and 19896 transitions. [2022-07-13 21:18:53,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:53,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:53,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:53,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 21:18:53,246 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:53,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:53,246 INFO L85 PathProgramCache]: Analyzing trace with hash 108314876, now seen corresponding path program 1 times [2022-07-13 21:18:53,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:53,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894132856] [2022-07-13 21:18:53,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:53,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:53,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:53,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:53,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:53,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:53,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:53,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:53,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:53,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894132856] [2022-07-13 21:18:53,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894132856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:53,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:53,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:53,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819100991] [2022-07-13 21:18:53,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:53,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:53,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:53,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:53,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:53,367 INFO L87 Difference]: Start difference. First operand 12600 states and 19896 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:59,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:59,413 INFO L93 Difference]: Finished difference Result 45709 states and 72981 transitions. [2022-07-13 21:18:59,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:18:59,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:59,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:59,492 INFO L225 Difference]: With dead ends: 45709 [2022-07-13 21:18:59,492 INFO L226 Difference]: Without dead ends: 33131 [2022-07-13 21:18:59,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:18:59,522 INFO L413 NwaCegarLoop]: 1042 mSDtfsCounter, 1683 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 3258 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 3090 SdHoareTripleChecker+Invalid, 3352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:59,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1703 Valid, 3090 Invalid, 3352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3258 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 21:18:59,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33131 states. [2022-07-13 21:19:01,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33131 to 24858. [2022-07-13 21:19:01,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24858 states, 22966 states have (on average 1.5585212923452059) internal successors, (35793), 23032 states have internal predecessors, (35793), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2022-07-13 21:19:01,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24858 states to 24858 states and 39458 transitions. [2022-07-13 21:19:01,625 INFO L78 Accepts]: Start accepts. Automaton has 24858 states and 39458 transitions. Word has length 190 [2022-07-13 21:19:01,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:19:01,626 INFO L495 AbstractCegarLoop]: Abstraction has 24858 states and 39458 transitions. [2022-07-13 21:19:01,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:19:01,626 INFO L276 IsEmpty]: Start isEmpty. Operand 24858 states and 39458 transitions. [2022-07-13 21:19:01,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:19:01,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:19:01,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:19:01,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 21:19:01,636 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:19:01,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:19:01,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1089269690, now seen corresponding path program 1 times [2022-07-13 21:19:01,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:19:01,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155884923] [2022-07-13 21:19:01,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:19:01,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:19:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:01,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:19:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:01,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:19:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:01,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:19:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:01,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:19:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:01,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:19:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:01,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:19:01,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:19:01,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155884923] [2022-07-13 21:19:01,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155884923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:19:01,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:19:01,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:19:01,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737445428] [2022-07-13 21:19:01,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:19:01,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:19:01,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:19:01,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:19:01,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:19:01,762 INFO L87 Difference]: Start difference. First operand 24858 states and 39458 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:19:11,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:19:11,210 INFO L93 Difference]: Finished difference Result 90317 states and 145005 transitions. [2022-07-13 21:19:11,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:19:11,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:19:11,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:19:11,394 INFO L225 Difference]: With dead ends: 90317 [2022-07-13 21:19:11,394 INFO L226 Difference]: Without dead ends: 65481 [2022-07-13 21:19:11,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:19:11,455 INFO L413 NwaCegarLoop]: 1037 mSDtfsCounter, 1682 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 3250 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 3344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:19:11,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1702 Valid, 3085 Invalid, 3344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3250 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 21:19:11,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65481 states. [2022-07-13 21:19:15,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65481 to 49435. [2022-07-13 21:19:16,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49435 states, 45687 states have (on average 1.5574452251187427) internal successors, (71155), 45817 states have internal predecessors, (71155), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2022-07-13 21:19:16,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49435 states to 49435 states and 79158 transitions. [2022-07-13 21:19:16,266 INFO L78 Accepts]: Start accepts. Automaton has 49435 states and 79158 transitions. Word has length 190 [2022-07-13 21:19:16,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:19:16,267 INFO L495 AbstractCegarLoop]: Abstraction has 49435 states and 79158 transitions. [2022-07-13 21:19:16,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:19:16,267 INFO L276 IsEmpty]: Start isEmpty. Operand 49435 states and 79158 transitions. [2022-07-13 21:19:16,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:19:16,286 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:19:16,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:19:16,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 21:19:16,286 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:19:16,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:19:16,287 INFO L85 PathProgramCache]: Analyzing trace with hash -680201924, now seen corresponding path program 1 times [2022-07-13 21:19:16,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:19:16,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488486907] [2022-07-13 21:19:16,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:19:16,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:19:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:16,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:19:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:16,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:19:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:16,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:19:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:16,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:19:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:16,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:19:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:16,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:19:16,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:19:16,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488486907] [2022-07-13 21:19:16,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488486907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:19:16,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:19:16,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:19:16,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642553717] [2022-07-13 21:19:16,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:19:16,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:19:16,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:19:16,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:19:16,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:19:16,397 INFO L87 Difference]: Start difference. First operand 49435 states and 79158 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:19:33,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:19:33,259 INFO L93 Difference]: Finished difference Result 179532 states and 290899 transitions. [2022-07-13 21:19:33,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:19:33,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:19:33,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:19:33,711 INFO L225 Difference]: With dead ends: 179532 [2022-07-13 21:19:33,711 INFO L226 Difference]: Without dead ends: 130119 [2022-07-13 21:19:33,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:19:33,850 INFO L413 NwaCegarLoop]: 1030 mSDtfsCounter, 1684 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 3239 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 3078 SdHoareTripleChecker+Invalid, 3336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 3239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:19:33,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1704 Valid, 3078 Invalid, 3336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 3239 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 21:19:34,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130119 states. [2022-07-13 21:19:43,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130119 to 98716. [2022-07-13 21:19:43,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98716 states, 91256 states have (on average 1.5568181818181819) internal successors, (142069), 91514 states have internal predecessors, (142069), 5661 states have call successors, (5661), 1543 states have call predecessors, (5661), 1798 states have return successors, (12476), 5914 states have call predecessors, (12476), 5659 states have call successors, (12476) [2022-07-13 21:19:43,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98716 states to 98716 states and 160206 transitions. [2022-07-13 21:19:43,490 INFO L78 Accepts]: Start accepts. Automaton has 98716 states and 160206 transitions. Word has length 190 [2022-07-13 21:19:43,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:19:43,490 INFO L495 AbstractCegarLoop]: Abstraction has 98716 states and 160206 transitions. [2022-07-13 21:19:43,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:19:43,491 INFO L276 IsEmpty]: Start isEmpty. Operand 98716 states and 160206 transitions. [2022-07-13 21:19:43,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:19:43,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:19:43,526 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:19:43,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 21:19:43,527 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:19:43,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:19:43,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1291470982, now seen corresponding path program 1 times [2022-07-13 21:19:43,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:19:43,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784685594] [2022-07-13 21:19:43,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:19:43,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:19:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:43,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:19:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:43,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:19:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:43,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:19:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:43,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:19:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:43,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:19:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:43,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:19:43,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:19:43,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784685594] [2022-07-13 21:19:43,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784685594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:19:43,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:19:43,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:19:43,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728791982] [2022-07-13 21:19:43,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:19:43,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:19:43,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:19:43,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:19:43,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:19:43,627 INFO L87 Difference]: Start difference. First operand 98716 states and 160206 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:20:00,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:20:00,245 INFO L93 Difference]: Finished difference Result 230424 states and 381359 transitions. [2022-07-13 21:20:00,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:20:00,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:20:00,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:20:00,835 INFO L225 Difference]: With dead ends: 230424 [2022-07-13 21:20:00,835 INFO L226 Difference]: Without dead ends: 131730 [2022-07-13 21:20:01,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:20:01,132 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 1392 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:20:01,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 1462 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 21:20:01,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131730 states. [2022-07-13 21:20:10,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131730 to 98716. [2022-07-13 21:20:10,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98716 states, 91256 states have (on average 1.5540019286403086) internal successors, (141812), 91514 states have internal predecessors, (141812), 5661 states have call successors, (5661), 1543 states have call predecessors, (5661), 1798 states have return successors, (12476), 5914 states have call predecessors, (12476), 5659 states have call successors, (12476) [2022-07-13 21:20:11,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98716 states to 98716 states and 159949 transitions. [2022-07-13 21:20:11,217 INFO L78 Accepts]: Start accepts. Automaton has 98716 states and 159949 transitions. Word has length 190 [2022-07-13 21:20:11,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:20:11,218 INFO L495 AbstractCegarLoop]: Abstraction has 98716 states and 159949 transitions. [2022-07-13 21:20:11,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:20:11,218 INFO L276 IsEmpty]: Start isEmpty. Operand 98716 states and 159949 transitions. [2022-07-13 21:20:11,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:20:11,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:20:11,249 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:20:11,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 21:20:11,249 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:20:11,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:20:11,249 INFO L85 PathProgramCache]: Analyzing trace with hash 602862904, now seen corresponding path program 1 times [2022-07-13 21:20:11,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:20:11,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698685947] [2022-07-13 21:20:11,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:20:11,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:20:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:20:11,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:20:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:20:11,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:20:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:20:11,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:20:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:20:11,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:20:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:20:11,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:20:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:20:11,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:20:11,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:20:11,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698685947] [2022-07-13 21:20:11,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698685947] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:20:11,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:20:11,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:20:11,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934525845] [2022-07-13 21:20:11,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:20:11,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:20:11,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:20:11,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:20:11,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:20:11,374 INFO L87 Difference]: Start difference. First operand 98716 states and 159949 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:20:59,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:20:59,527 INFO L93 Difference]: Finished difference Result 403271 states and 656927 transitions. [2022-07-13 21:20:59,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:20:59,528 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:20:59,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:21:00,700 INFO L225 Difference]: With dead ends: 403271 [2022-07-13 21:21:00,700 INFO L226 Difference]: Without dead ends: 304577 [2022-07-13 21:21:01,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:21:01,066 INFO L413 NwaCegarLoop]: 1012 mSDtfsCounter, 2157 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 3194 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2191 SdHoareTripleChecker+Valid, 3049 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:21:01,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2191 Valid, 3049 Invalid, 3296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 3194 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 21:21:01,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304577 states.