./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.14.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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/Problem05_label45+token_ring.14.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 5c885e36ce67f972719c7330e2fdf8e1794f0d30dd144b261109fa7b0892a972 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:38:34,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:38:34,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:38:34,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:38:34,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:38:34,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:38:34,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:38:34,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:38:34,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:38:34,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:38:34,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:38:34,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:38:34,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:38:34,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:38:34,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:38:34,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:38:34,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:38:34,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:38:34,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:38:34,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:38:34,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:38:34,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:38:34,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:38:34,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:38:34,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:38:34,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:38:34,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:38:34,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:38:34,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:38:34,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:38:34,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:38:34,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:38:34,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:38:34,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:38:34,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:38:34,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:38:34,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:38:34,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:38:34,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:38:34,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:38:34,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:38:34,477 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:38:34,508 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:38:34,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:38:34,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:38:34,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:38:34,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:38:34,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:38:34,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:38:34,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:38:34,511 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:38:34,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:38:34,512 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:38:34,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:38:34,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:38:34,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:38:34,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:38:34,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:38:34,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:38:34,513 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:38:34,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:38:34,514 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:38:34,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:38:34,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:38:34,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:38:34,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:38:34,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:38:34,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:38:34,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:38:34,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:38:34,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:38:34,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:38:34,516 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:38:34,516 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:38:34,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:38:34,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:38:34,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c885e36ce67f972719c7330e2fdf8e1794f0d30dd144b261109fa7b0892a972 [2021-12-22 12:38:34,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:38:34,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:38:34,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:38:34,768 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:38:34,768 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:38:34,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.14.cil.c [2021-12-22 12:38:34,842 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35292fe8f/1707a0077d234b33a77c19fd5b1cdde5/FLAG177ca0c7b [2021-12-22 12:38:35,594 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:38:35,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.14.cil.c [2021-12-22 12:38:35,645 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35292fe8f/1707a0077d234b33a77c19fd5b1cdde5/FLAG177ca0c7b [2021-12-22 12:38:35,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35292fe8f/1707a0077d234b33a77c19fd5b1cdde5 [2021-12-22 12:38:35,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:38:35,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:38:35,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:38:35,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:38:35,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:38:35,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:38:35" (1/1) ... [2021-12-22 12:38:35,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f6bca86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:35, skipping insertion in model container [2021-12-22 12:38:35,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:38:35" (1/1) ... [2021-12-22 12:38:35,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:38:36,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:38:37,490 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/Problem05_label45+token_ring.14.cil.c[380323,380336] [2021-12-22 12:38:37,522 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/Problem05_label45+token_ring.14.cil.c[383339,383352] [2021-12-22 12:38:37,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:38:37,772 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:38:38,539 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/Problem05_label45+token_ring.14.cil.c[380323,380336] [2021-12-22 12:38:38,545 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/Problem05_label45+token_ring.14.cil.c[383339,383352] [2021-12-22 12:38:38,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:38:38,636 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:38:38,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38 WrapperNode [2021-12-22 12:38:38,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:38:38,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:38:38,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:38:38,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:38:38,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (1/1) ... [2021-12-22 12:38:38,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (1/1) ... [2021-12-22 12:38:39,078 INFO L137 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13202 [2021-12-22 12:38:39,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:38:39,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:38:39,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:38:39,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:38:39,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (1/1) ... [2021-12-22 12:38:39,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (1/1) ... [2021-12-22 12:38:39,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (1/1) ... [2021-12-22 12:38:39,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (1/1) ... [2021-12-22 12:38:39,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (1/1) ... [2021-12-22 12:38:39,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (1/1) ... [2021-12-22 12:38:39,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (1/1) ... [2021-12-22 12:38:39,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:38:39,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:38:39,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:38:39,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:38:39,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (1/1) ... [2021-12-22 12:38:39,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:38:39,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:38:39,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 12:38:39,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 12:38:39,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:38:39,727 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-22 12:38:39,728 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-22 12:38:39,728 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-22 12:38:39,728 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-22 12:38:39,728 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-22 12:38:39,728 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-22 12:38:39,728 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-22 12:38:39,728 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-22 12:38:39,729 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-22 12:38:39,729 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-22 12:38:39,729 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-22 12:38:39,729 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-22 12:38:39,729 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-22 12:38:39,729 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-22 12:38:39,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:38:39,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:38:39,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:38:39,934 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:38:39,935 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:38:45,790 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:38:45,815 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:38:45,815 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-22 12:38:45,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:38:45 BoogieIcfgContainer [2021-12-22 12:38:45,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:38:45,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:38:45,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:38:45,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:38:45,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:38:35" (1/3) ... [2021-12-22 12:38:45,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a78b21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:38:45, skipping insertion in model container [2021-12-22 12:38:45,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:38:38" (2/3) ... [2021-12-22 12:38:45,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a78b21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:38:45, skipping insertion in model container [2021-12-22 12:38:45,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:38:45" (3/3) ... [2021-12-22 12:38:45,829 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.14.cil.c [2021-12-22 12:38:45,836 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:38:45,836 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:38:45,900 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:38:45,907 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 12:38:45,908 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:38:45,965 INFO L276 IsEmpty]: Start isEmpty. Operand has 2571 states, 2533 states have (on average 1.843268851164627) internal successors, (4669), 2538 states have internal predecessors, (4669), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-22 12:38:45,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:38:45,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:38:45,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:38:45,982 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:38:45,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:38:45,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1261108038, now seen corresponding path program 1 times [2021-12-22 12:38:45,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:38:45,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344308418] [2021-12-22 12:38:45,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:38:45,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:38:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:46,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:38:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:46,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:38:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:46,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:38:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:46,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:38:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:46,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:38:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:46,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:38:46,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:38:46,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344308418] [2021-12-22 12:38:46,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344308418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:38:46,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:38:46,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:38:46,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379534758] [2021-12-22 12:38:46,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:38:46,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:38:46,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:38:46,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:38:46,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:38:46,600 INFO L87 Difference]: Start difference. First operand has 2571 states, 2533 states have (on average 1.843268851164627) internal successors, (4669), 2538 states have internal predecessors, (4669), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-22 12:38:48,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:38:48,394 INFO L93 Difference]: Finished difference Result 5277 states and 9684 transitions. [2021-12-22 12:38:48,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:38:48,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 179 [2021-12-22 12:38:48,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:38:48,418 INFO L225 Difference]: With dead ends: 5277 [2021-12-22 12:38:48,418 INFO L226 Difference]: Without dead ends: 2645 [2021-12-22 12:38:48,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:38:48,429 INFO L933 BasicCegarLoop]: 4691 mSDtfsCounter, 1044 mSDsluCounter, 12495 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 17186 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:38:48,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 17186 Invalid, 767 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 12:38:48,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2021-12-22 12:38:48,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2503. [2021-12-22 12:38:48,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2467 states have (on average 1.8265099310903932) internal successors, (4506), 2470 states have internal predecessors, (4506), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-22 12:38:48,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4560 transitions. [2021-12-22 12:38:48,545 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4560 transitions. Word has length 179 [2021-12-22 12:38:48,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:38:48,546 INFO L470 AbstractCegarLoop]: Abstraction has 2503 states and 4560 transitions. [2021-12-22 12:38:48,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-22 12:38:48,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4560 transitions. [2021-12-22 12:38:48,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:38:48,551 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:38:48,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:38:48,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:38:48,551 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:38:48,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:38:48,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1530760952, now seen corresponding path program 1 times [2021-12-22 12:38:48,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:38:48,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300803646] [2021-12-22 12:38:48,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:38:48,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:38:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:48,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:38:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:48,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:38:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:48,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:38:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:48,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:38:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:48,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:38:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:48,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:38:48,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:38:48,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300803646] [2021-12-22 12:38:48,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300803646] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:38:48,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:38:48,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:38:48,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797651223] [2021-12-22 12:38:48,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:38:48,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:38:48,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:38:48,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:38:48,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:38:48,772 INFO L87 Difference]: Start difference. First operand 2503 states and 4560 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-22 12:38:50,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:38:50,222 INFO L93 Difference]: Finished difference Result 3012 states and 5382 transitions. [2021-12-22 12:38:50,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:38:50,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 179 [2021-12-22 12:38:50,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:38:50,237 INFO L225 Difference]: With dead ends: 3012 [2021-12-22 12:38:50,237 INFO L226 Difference]: Without dead ends: 2645 [2021-12-22 12:38:50,242 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:38:50,243 INFO L933 BasicCegarLoop]: 4621 mSDtfsCounter, 1030 mSDsluCounter, 12292 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 16913 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:38:50,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 16913 Invalid, 766 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 12:38:50,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2021-12-22 12:38:50,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2503. [2021-12-22 12:38:50,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2467 states have (on average 1.8261045804620997) internal successors, (4505), 2470 states have internal predecessors, (4505), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-22 12:38:50,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4559 transitions. [2021-12-22 12:38:50,316 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4559 transitions. Word has length 179 [2021-12-22 12:38:50,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:38:50,318 INFO L470 AbstractCegarLoop]: Abstraction has 2503 states and 4559 transitions. [2021-12-22 12:38:50,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-22 12:38:50,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4559 transitions. [2021-12-22 12:38:50,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:38:50,323 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:38:50,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:38:50,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:38:50,324 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:38:50,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:38:50,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2101032758, now seen corresponding path program 1 times [2021-12-22 12:38:50,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:38:50,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117030811] [2021-12-22 12:38:50,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:38:50,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:38:50,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:50,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:38:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:50,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:38:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:50,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:38:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:50,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:38:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:50,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:38:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:50,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:38:50,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:38:50,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117030811] [2021-12-22 12:38:50,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117030811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:38:50,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:38:50,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:38:50,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858922092] [2021-12-22 12:38:50,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:38:50,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 12:38:50,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:38:50,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 12:38:50,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 12:38:50,537 INFO L87 Difference]: Start difference. First operand 2503 states and 4559 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2021-12-22 12:38:53,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:38:53,362 INFO L93 Difference]: Finished difference Result 3529 states and 6222 transitions. [2021-12-22 12:38:53,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 12:38:53,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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 179 [2021-12-22 12:38:53,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:38:53,376 INFO L225 Difference]: With dead ends: 3529 [2021-12-22 12:38:53,377 INFO L226 Difference]: Without dead ends: 3167 [2021-12-22 12:38:53,379 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:38:53,380 INFO L933 BasicCegarLoop]: 4673 mSDtfsCounter, 5521 mSDsluCounter, 12900 mSDsCounter, 0 mSdLazyCounter, 1956 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5540 SdHoareTripleChecker+Valid, 17573 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:38:53,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5540 Valid, 17573 Invalid, 2080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 1956 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-22 12:38:53,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2021-12-22 12:38:53,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 2882. [2021-12-22 12:38:53,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2818 states have (on average 1.798083747338538) internal successors, (5067), 2822 states have internal predecessors, (5067), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-22 12:38:53,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 5166 transitions. [2021-12-22 12:38:53,482 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 5166 transitions. Word has length 179 [2021-12-22 12:38:53,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:38:53,483 INFO L470 AbstractCegarLoop]: Abstraction has 2882 states and 5166 transitions. [2021-12-22 12:38:53,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2021-12-22 12:38:53,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 5166 transitions. [2021-12-22 12:38:53,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:38:53,486 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:38:53,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:38:53,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:38:53,486 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:38:53,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:38:53,487 INFO L85 PathProgramCache]: Analyzing trace with hash 808194758, now seen corresponding path program 1 times [2021-12-22 12:38:53,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:38:53,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520385878] [2021-12-22 12:38:53,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:38:53,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:38:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:53,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:38:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:53,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:38:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:53,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:38:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:53,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:38:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:53,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:38:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:38:53,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:38:53,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520385878] [2021-12-22 12:38:53,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520385878] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:38:53,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:38:53,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:38:53,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444357553] [2021-12-22 12:38:53,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:38:53,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:38:53,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:38:53,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:38:53,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:38:53,651 INFO L87 Difference]: Start difference. First operand 2882 states and 5166 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:38:57,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:38:57,041 INFO L93 Difference]: Finished difference Result 4448 states and 7708 transitions. [2021-12-22 12:38:57,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:38:57,041 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-22 12:38:57,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:38:57,058 INFO L225 Difference]: With dead ends: 4448 [2021-12-22 12:38:57,058 INFO L226 Difference]: Without dead ends: 3707 [2021-12-22 12:38:57,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:38:57,063 INFO L933 BasicCegarLoop]: 4980 mSDtfsCounter, 5549 mSDsluCounter, 17815 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5568 SdHoareTripleChecker+Valid, 22795 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-22 12:38:57,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5568 Valid, 22795 Invalid, 3152 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 3072 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-22 12:38:57,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2021-12-22 12:38:57,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 3234. [2021-12-22 12:38:57,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3142 states have (on average 1.7743475493316359) internal successors, (5575), 3147 states have internal predecessors, (5575), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2021-12-22 12:38:57,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 5718 transitions. [2021-12-22 12:38:57,197 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 5718 transitions. Word has length 179 [2021-12-22 12:38:57,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:38:57,197 INFO L470 AbstractCegarLoop]: Abstraction has 3234 states and 5718 transitions. [2021-12-22 12:38:57,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:38:57,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 5718 transitions. [2021-12-22 12:38:57,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:38:57,201 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:38:57,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:38:57,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:38:57,202 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:38:57,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:38:57,202 INFO L85 PathProgramCache]: Analyzing trace with hash -961276856, now seen corresponding path program 1 times [2021-12-22 12:38:57,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:38:57,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928800019] [2021-12-22 12:38:57,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:38:57,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:38:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:57,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:38:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:57,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:38:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:57,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:38:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:57,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:38:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:57,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:38:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:38:57,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:38:57,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:38:57,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928800019] [2021-12-22 12:38:57,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928800019] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:38:57,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:38:57,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:38:57,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828073805] [2021-12-22 12:38:57,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:38:57,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:38:57,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:38:57,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:38:57,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:38:57,375 INFO L87 Difference]: Start difference. First operand 3234 states and 5718 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:39:00,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:00,685 INFO L93 Difference]: Finished difference Result 5803 states and 9880 transitions. [2021-12-22 12:39:00,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:39:00,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-22 12:39:00,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:00,710 INFO L225 Difference]: With dead ends: 5803 [2021-12-22 12:39:00,710 INFO L226 Difference]: Without dead ends: 4710 [2021-12-22 12:39:00,717 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:39:00,718 INFO L933 BasicCegarLoop]: 4717 mSDtfsCounter, 5660 mSDsluCounter, 17150 mSDsCounter, 0 mSdLazyCounter, 2725 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5679 SdHoareTripleChecker+Valid, 21867 SdHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:00,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5679 Valid, 21867 Invalid, 2848 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 2725 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-22 12:39:00,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2021-12-22 12:39:00,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 3939. [2021-12-22 12:39:00,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3939 states, 3791 states have (on average 1.738855183328937) internal successors, (6592), 3798 states have internal predecessors, (6592), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-22 12:39:00,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 6827 transitions. [2021-12-22 12:39:00,943 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 6827 transitions. Word has length 179 [2021-12-22 12:39:00,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:00,943 INFO L470 AbstractCegarLoop]: Abstraction has 3939 states and 6827 transitions. [2021-12-22 12:39:00,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:39:00,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 6827 transitions. [2021-12-22 12:39:00,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:39:00,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:00,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:00,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:39:00,948 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:00,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:00,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1572545914, now seen corresponding path program 1 times [2021-12-22 12:39:00,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:00,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065844225] [2021-12-22 12:39:00,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:00,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:00,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:01,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:39:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:01,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:39:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:01,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:39:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:01,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:39:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:01,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:01,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:01,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065844225] [2021-12-22 12:39:01,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065844225] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:01,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:01,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:01,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497003815] [2021-12-22 12:39:01,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:01,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:01,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:01,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:01,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:01,135 INFO L87 Difference]: Start difference. First operand 3939 states and 6827 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:39:04,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:04,764 INFO L93 Difference]: Finished difference Result 8408 states and 14029 transitions. [2021-12-22 12:39:04,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:39:04,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-22 12:39:04,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:04,792 INFO L225 Difference]: With dead ends: 8408 [2021-12-22 12:39:04,792 INFO L226 Difference]: Without dead ends: 6610 [2021-12-22 12:39:04,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:39:04,802 INFO L933 BasicCegarLoop]: 4968 mSDtfsCounter, 5544 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3075 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5563 SdHoareTripleChecker+Valid, 22779 SdHoareTripleChecker+Invalid, 3160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:04,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5563 Valid, 22779 Invalid, 3160 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 3075 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-22 12:39:04,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6610 states. [2021-12-22 12:39:05,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6610 to 5350. [2021-12-22 12:39:05,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5350 states, 5090 states have (on average 1.694695481335953) internal successors, (8626), 5101 states have internal predecessors, (8626), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2021-12-22 12:39:05,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5350 states to 5350 states and 9051 transitions. [2021-12-22 12:39:05,156 INFO L78 Accepts]: Start accepts. Automaton has 5350 states and 9051 transitions. Word has length 179 [2021-12-22 12:39:05,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:05,157 INFO L470 AbstractCegarLoop]: Abstraction has 5350 states and 9051 transitions. [2021-12-22 12:39:05,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:39:05,157 INFO L276 IsEmpty]: Start isEmpty. Operand 5350 states and 9051 transitions. [2021-12-22 12:39:05,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:39:05,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:05,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:05,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:39:05,161 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:05,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:05,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1317229704, now seen corresponding path program 1 times [2021-12-22 12:39:05,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:05,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335171198] [2021-12-22 12:39:05,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:05,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:05,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:05,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:39:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:05,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:39:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:05,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:39:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:05,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:39:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:05,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:05,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:05,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335171198] [2021-12-22 12:39:05,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335171198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:05,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:05,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:05,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227040958] [2021-12-22 12:39:05,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:05,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:05,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:05,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:05,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:05,331 INFO L87 Difference]: Start difference. First operand 5350 states and 9051 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:39:08,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:08,749 INFO L93 Difference]: Finished difference Result 13610 states and 22331 transitions. [2021-12-22 12:39:08,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:39:08,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-22 12:39:08,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:08,790 INFO L225 Difference]: With dead ends: 13610 [2021-12-22 12:39:08,791 INFO L226 Difference]: Without dead ends: 10401 [2021-12-22 12:39:08,805 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:39:08,806 INFO L933 BasicCegarLoop]: 4960 mSDtfsCounter, 5539 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3055 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5558 SdHoareTripleChecker+Valid, 22771 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:08,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5558 Valid, 22771 Invalid, 3141 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3055 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-22 12:39:08,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10401 states. [2021-12-22 12:39:09,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10401 to 8186. [2021-12-22 12:39:09,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8186 states, 7702 states have (on average 1.6512594131394442) internal successors, (12718), 7721 states have internal predecessors, (12718), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2021-12-22 12:39:09,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8186 states to 8186 states and 13541 transitions. [2021-12-22 12:39:09,422 INFO L78 Accepts]: Start accepts. Automaton has 8186 states and 13541 transitions. Word has length 179 [2021-12-22 12:39:09,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:09,423 INFO L470 AbstractCegarLoop]: Abstraction has 8186 states and 13541 transitions. [2021-12-22 12:39:09,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:39:09,423 INFO L276 IsEmpty]: Start isEmpty. Operand 8186 states and 13541 transitions. [2021-12-22 12:39:09,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:39:09,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:09,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:09,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:39:09,429 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:09,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:09,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1531156726, now seen corresponding path program 1 times [2021-12-22 12:39:09,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:09,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176989987] [2021-12-22 12:39:09,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:09,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:09,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:09,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:39:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:09,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:39:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:09,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:39:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:09,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:39:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:09,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:09,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:09,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176989987] [2021-12-22 12:39:09,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176989987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:09,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:09,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:09,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98008170] [2021-12-22 12:39:09,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:09,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:09,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:09,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:09,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:09,584 INFO L87 Difference]: Start difference. First operand 8186 states and 13541 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:39:13,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:13,342 INFO L93 Difference]: Finished difference Result 24032 states and 39027 transitions. [2021-12-22 12:39:13,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:39:13,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-22 12:39:13,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:13,412 INFO L225 Difference]: With dead ends: 24032 [2021-12-22 12:39:13,412 INFO L226 Difference]: Without dead ends: 17987 [2021-12-22 12:39:13,439 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:39:13,439 INFO L933 BasicCegarLoop]: 4955 mSDtfsCounter, 5538 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3047 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5557 SdHoareTripleChecker+Valid, 22766 SdHoareTripleChecker+Invalid, 3133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:13,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5557 Valid, 22766 Invalid, 3133 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3047 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 12:39:13,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17987 states. [2021-12-22 12:39:14,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17987 to 13871. [2021-12-22 12:39:14,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 12939 states have (on average 1.6168173738310534) internal successors, (20920), 12974 states have internal predecessors, (20920), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-22 12:39:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 22593 transitions. [2021-12-22 12:39:14,485 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 22593 transitions. Word has length 179 [2021-12-22 12:39:14,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:14,485 INFO L470 AbstractCegarLoop]: Abstraction has 13871 states and 22593 transitions. [2021-12-22 12:39:14,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:39:14,486 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 22593 transitions. [2021-12-22 12:39:14,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:39:14,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:14,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:14,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:39:14,496 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:14,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:14,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1840643144, now seen corresponding path program 1 times [2021-12-22 12:39:14,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:14,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056629863] [2021-12-22 12:39:14,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:14,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:14,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:14,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:39:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:14,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:39:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:14,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:39:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:14,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:39:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:14,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:14,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:14,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056629863] [2021-12-22 12:39:14,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056629863] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:14,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:14,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:14,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269715106] [2021-12-22 12:39:14,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:14,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:14,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:14,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:14,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:14,661 INFO L87 Difference]: Start difference. First operand 13871 states and 22593 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:39:17,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:17,642 INFO L93 Difference]: Finished difference Result 29968 states and 48786 transitions. [2021-12-22 12:39:17,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 12:39:17,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-22 12:39:17,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:17,706 INFO L225 Difference]: With dead ends: 29968 [2021-12-22 12:39:17,707 INFO L226 Difference]: Without dead ends: 18238 [2021-12-22 12:39:17,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-22 12:39:17,749 INFO L933 BasicCegarLoop]: 4597 mSDtfsCounter, 5089 mSDsluCounter, 16781 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5109 SdHoareTripleChecker+Valid, 21378 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:17,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5109 Valid, 21378 Invalid, 1566 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [89 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 12:39:17,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18238 states. [2021-12-22 12:39:18,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18238 to 13871. [2021-12-22 12:39:18,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 12939 states have (on average 1.6142669448952778) internal successors, (20887), 12974 states have internal predecessors, (20887), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-22 12:39:18,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 22560 transitions. [2021-12-22 12:39:18,639 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 22560 transitions. Word has length 179 [2021-12-22 12:39:18,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:18,639 INFO L470 AbstractCegarLoop]: Abstraction has 13871 states and 22560 transitions. [2021-12-22 12:39:18,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:39:18,639 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 22560 transitions. [2021-12-22 12:39:18,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-22 12:39:18,648 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:18,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:18,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:39:18,648 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:18,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:18,649 INFO L85 PathProgramCache]: Analyzing trace with hash -2068461750, now seen corresponding path program 1 times [2021-12-22 12:39:18,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:18,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591732038] [2021-12-22 12:39:18,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:18,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:18,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:18,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-22 12:39:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:18,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 12:39:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:18,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:39:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:18,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-22 12:39:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:18,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:18,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591732038] [2021-12-22 12:39:18,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591732038] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:18,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:18,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:18,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184674851] [2021-12-22 12:39:18,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:18,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:18,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:18,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:18,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:18,787 INFO L87 Difference]: Start difference. First operand 13871 states and 22560 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-22 12:39:23,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:23,845 INFO L93 Difference]: Finished difference Result 44841 states and 72377 transitions. [2021-12-22 12:39:23,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:39:23,846 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-22 12:39:23,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:23,976 INFO L225 Difference]: With dead ends: 44841 [2021-12-22 12:39:23,977 INFO L226 Difference]: Without dead ends: 33111 [2021-12-22 12:39:24,016 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:39:24,017 INFO L933 BasicCegarLoop]: 4944 mSDtfsCounter, 5530 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3020 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5549 SdHoareTripleChecker+Valid, 22755 SdHoareTripleChecker+Invalid, 3106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:24,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5549 Valid, 22755 Invalid, 3106 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3020 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 12:39:24,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33111 states.