./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.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 62eecaab9c99f0fa1c059eddca8c27b38035ebb18e1472cebfbee2848ace27b1 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 19:04:08,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 19:04:08,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 19:04:08,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 19:04:08,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 19:04:08,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 19:04:08,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 19:04:08,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 19:04:08,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 19:04:08,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 19:04:08,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 19:04:08,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 19:04:08,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 19:04:08,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 19:04:08,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 19:04:08,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 19:04:08,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 19:04:08,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 19:04:08,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 19:04:08,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 19:04:08,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 19:04:08,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 19:04:08,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 19:04:08,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 19:04:08,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 19:04:08,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 19:04:08,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 19:04:08,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 19:04:08,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 19:04:08,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 19:04:08,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 19:04:08,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 19:04:08,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 19:04:08,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 19:04:08,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 19:04:08,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 19:04:08,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 19:04:08,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 19:04:08,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 19:04:08,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 19:04:08,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 19:04:08,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 19:04:08,816 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 19:04:08,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 19:04:08,816 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 19:04:08,817 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 19:04:08,817 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 19:04:08,817 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 19:04:08,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 19:04:08,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 19:04:08,818 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 19:04:08,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 19:04:08,819 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 19:04:08,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 19:04:08,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 19:04:08,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 19:04:08,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 19:04:08,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 19:04:08,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 19:04:08,820 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 19:04:08,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 19:04:08,820 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 19:04:08,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 19:04:08,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 19:04:08,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 19:04:08,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 19:04:08,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 19:04:08,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 19:04:08,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 19:04:08,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 19:04:08,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 19:04:08,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 19:04:08,822 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 19:04:08,822 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 19:04:08,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 19:04:08,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 19:04:08,822 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62eecaab9c99f0fa1c059eddca8c27b38035ebb18e1472cebfbee2848ace27b1 [2021-12-17 19:04:09,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 19:04:09,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 19:04:09,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 19:04:09,054 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 19:04:09,055 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 19:04:09,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.c [2021-12-17 19:04:09,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c198dfc7/4e57bb90be064877bcfcb0f5f4153ede/FLAG54c3c70c5 [2021-12-17 19:04:09,744 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 19:04:09,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label48+token_ring.04.cil-1.c [2021-12-17 19:04:09,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c198dfc7/4e57bb90be064877bcfcb0f5f4153ede/FLAG54c3c70c5 [2021-12-17 19:04:09,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c198dfc7/4e57bb90be064877bcfcb0f5f4153ede [2021-12-17 19:04:09,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 19:04:09,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 19:04:09,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 19:04:09,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 19:04:09,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 19:04:09,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:04:09" (1/1) ... [2021-12-17 19:04:09,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fbfc939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:09, skipping insertion in model container [2021-12-17 19:04:09,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:04:09" (1/1) ... [2021-12-17 19:04:09,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 19:04:10,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 19:04:11,317 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_label48+token_ring.04.cil-1.c[375709,375722] [2021-12-17 19:04:11,339 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_label48+token_ring.04.cil-1.c[383339,383352] [2021-12-17 19:04:11,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 19:04:11,496 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 19:04:12,097 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_label48+token_ring.04.cil-1.c[375709,375722] [2021-12-17 19:04:12,105 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_label48+token_ring.04.cil-1.c[383339,383352] [2021-12-17 19:04:12,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 19:04:12,221 INFO L208 MainTranslator]: Completed translation [2021-12-17 19:04:12,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:12 WrapperNode [2021-12-17 19:04:12,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 19:04:12,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 19:04:12,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 19:04:12,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 19:04:12,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:12" (1/1) ... [2021-12-17 19:04:12,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:12" (1/1) ... [2021-12-17 19:04:12,533 INFO L137 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12735 [2021-12-17 19:04:12,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 19:04:12,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 19:04:12,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 19:04:12,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 19:04:12,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:12" (1/1) ... [2021-12-17 19:04:12,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:12" (1/1) ... [2021-12-17 19:04:12,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:12" (1/1) ... [2021-12-17 19:04:12,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:12" (1/1) ... [2021-12-17 19:04:12,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:12" (1/1) ... [2021-12-17 19:04:13,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:12" (1/1) ... [2021-12-17 19:04:13,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:12" (1/1) ... [2021-12-17 19:04:13,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 19:04:13,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 19:04:13,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 19:04:13,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 19:04:13,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:12" (1/1) ... [2021-12-17 19:04:13,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 19:04:13,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:04:13,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 19:04:13,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 19:04:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 19:04:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-17 19:04:13,162 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-17 19:04:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 19:04:13,162 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 19:04:13,163 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-17 19:04:13,163 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-17 19:04:13,163 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-17 19:04:13,163 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-17 19:04:13,163 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-17 19:04:13,163 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-17 19:04:13,163 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-17 19:04:13,163 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-17 19:04:13,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 19:04:13,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 19:04:13,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 19:04:13,231 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 19:04:13,233 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 19:04:17,713 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 19:04:17,741 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 19:04:17,742 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-17 19:04:17,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:04:17 BoogieIcfgContainer [2021-12-17 19:04:17,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 19:04:17,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 19:04:17,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 19:04:17,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 19:04:17,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 07:04:09" (1/3) ... [2021-12-17 19:04:17,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b660c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:04:17, skipping insertion in model container [2021-12-17 19:04:17,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:04:12" (2/3) ... [2021-12-17 19:04:17,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b660c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:04:17, skipping insertion in model container [2021-12-17 19:04:17,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:04:17" (3/3) ... [2021-12-17 19:04:17,752 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.04.cil-1.c [2021-12-17 19:04:17,756 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 19:04:17,756 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 19:04:17,796 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 19:04:17,801 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 19:04:17,801 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 19:04:17,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-17 19:04:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-17 19:04:17,847 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:04:17,847 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] [2021-12-17 19:04:17,848 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:04:17,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:04:17,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1353629608, now seen corresponding path program 1 times [2021-12-17 19:04:17,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:04:17,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626385331] [2021-12-17 19:04:17,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:17,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:04:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:18,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:04:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:18,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 19:04:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:18,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 19:04:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:18,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 19:04:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:18,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 19:04:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:04:18,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:04:18,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626385331] [2021-12-17 19:04:18,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626385331] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:04:18,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:04:18,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 19:04:18,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802199294] [2021-12-17 19:04:18,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:04:18,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 19:04:18,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:04:18,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 19:04:18,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 19:04:18,235 INFO L87 Difference]: Start difference. First operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:18,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:04:18,893 INFO L93 Difference]: Finished difference Result 4778 states and 8824 transitions. [2021-12-17 19:04:18,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 19:04:18,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-17 19:04:18,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:04:18,911 INFO L225 Difference]: With dead ends: 4778 [2021-12-17 19:04:18,912 INFO L226 Difference]: Without dead ends: 2352 [2021-12-17 19:04:18,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:04:18,921 INFO L933 BasicCegarLoop]: 4315 mSDtfsCounter, 434 mSDsluCounter, 12269 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 16584 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 19:04:18,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 16584 Invalid, 331 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 19:04:18,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2021-12-17 19:04:19,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2298. [2021-12-17 19:04:19,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2272 states have (on average 1.8433098591549295) internal successors, (4188), 2274 states have internal predecessors, (4188), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-17 19:04:19,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4224 transitions. [2021-12-17 19:04:19,017 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4224 transitions. Word has length 90 [2021-12-17 19:04:19,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:04:19,018 INFO L470 AbstractCegarLoop]: Abstraction has 2298 states and 4224 transitions. [2021-12-17 19:04:19,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:19,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4224 transitions. [2021-12-17 19:04:19,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-17 19:04:19,021 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:04:19,021 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] [2021-12-17 19:04:19,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 19:04:19,022 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:04:19,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:04:19,023 INFO L85 PathProgramCache]: Analyzing trace with hash -295791530, now seen corresponding path program 1 times [2021-12-17 19:04:19,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:04:19,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226051545] [2021-12-17 19:04:19,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:19,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:04:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:19,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:04:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:19,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 19:04:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:19,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 19:04:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:19,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 19:04:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:19,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 19:04:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:04:19,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:04:19,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226051545] [2021-12-17 19:04:19,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226051545] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:04:19,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:04:19,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 19:04:19,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515154238] [2021-12-17 19:04:19,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:04:19,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 19:04:19,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:04:19,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 19:04:19,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 19:04:19,133 INFO L87 Difference]: Start difference. First operand 2298 states and 4224 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:19,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:04:19,997 INFO L93 Difference]: Finished difference Result 2738 states and 4911 transitions. [2021-12-17 19:04:19,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 19:04:19,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-17 19:04:19,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:04:20,008 INFO L225 Difference]: With dead ends: 2738 [2021-12-17 19:04:20,009 INFO L226 Difference]: Without dead ends: 2573 [2021-12-17 19:04:20,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:04:20,011 INFO L933 BasicCegarLoop]: 4266 mSDtfsCounter, 4590 mSDsluCounter, 12352 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4601 SdHoareTripleChecker+Valid, 16618 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 19:04:20,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4601 Valid, 16618 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 19:04:20,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2021-12-17 19:04:20,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2466. [2021-12-17 19:04:20,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.824793388429752) internal successors, (4416), 2423 states have internal predecessors, (4416), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2021-12-17 19:04:20,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4481 transitions. [2021-12-17 19:04:20,072 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4481 transitions. Word has length 90 [2021-12-17 19:04:20,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:04:20,072 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4481 transitions. [2021-12-17 19:04:20,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:20,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4481 transitions. [2021-12-17 19:04:20,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-17 19:04:20,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:04:20,076 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] [2021-12-17 19:04:20,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 19:04:20,076 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:04:20,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:04:20,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1470450982, now seen corresponding path program 1 times [2021-12-17 19:04:20,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:04:20,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69376111] [2021-12-17 19:04:20,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:20,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:04:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:20,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:04:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:20,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 19:04:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:20,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 19:04:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:20,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 19:04:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:20,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 19:04:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:04:20,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:04:20,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69376111] [2021-12-17 19:04:20,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69376111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:04:20,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:04:20,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:04:20,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012857313] [2021-12-17 19:04:20,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:04:20,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:04:20,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:04:20,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:04:20,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:04:20,197 INFO L87 Difference]: Start difference. First operand 2466 states and 4481 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:21,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:04:21,363 INFO L93 Difference]: Finished difference Result 3131 states and 5513 transitions. [2021-12-17 19:04:21,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 19:04:21,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-17 19:04:21,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:04:21,372 INFO L225 Difference]: With dead ends: 3131 [2021-12-17 19:04:21,372 INFO L226 Difference]: Without dead ends: 2798 [2021-12-17 19:04:21,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 19:04:21,374 INFO L933 BasicCegarLoop]: 4389 mSDtfsCounter, 4588 mSDsluCounter, 16723 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4599 SdHoareTripleChecker+Valid, 21112 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 19:04:21,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4599 Valid, 21112 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 19:04:21,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-12-17 19:04:21,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2623. [2021-12-17 19:04:21,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 2557 states have (on average 1.8075870160344154) internal successors, (4622), 2561 states have internal predecessors, (4622), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2021-12-17 19:04:21,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 4715 transitions. [2021-12-17 19:04:21,426 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 4715 transitions. Word has length 90 [2021-12-17 19:04:21,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:04:21,426 INFO L470 AbstractCegarLoop]: Abstraction has 2623 states and 4715 transitions. [2021-12-17 19:04:21,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:21,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 4715 transitions. [2021-12-17 19:04:21,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-17 19:04:21,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:04:21,428 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] [2021-12-17 19:04:21,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 19:04:21,428 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:04:21,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:04:21,429 INFO L85 PathProgramCache]: Analyzing trace with hash -583228136, now seen corresponding path program 1 times [2021-12-17 19:04:21,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:04:21,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069759038] [2021-12-17 19:04:21,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:21,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:04:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:21,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:04:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:21,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 19:04:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:21,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 19:04:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:21,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 19:04:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:21,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 19:04:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:04:21,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:04:21,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069759038] [2021-12-17 19:04:21,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069759038] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:04:21,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:04:21,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:04:21,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883120808] [2021-12-17 19:04:21,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:04:21,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:04:21,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:04:21,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:04:21,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:04:21,521 INFO L87 Difference]: Start difference. First operand 2623 states and 4715 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:22,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:04:22,452 INFO L93 Difference]: Finished difference Result 3709 states and 6395 transitions. [2021-12-17 19:04:22,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 19:04:22,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-17 19:04:22,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:04:22,463 INFO L225 Difference]: With dead ends: 3709 [2021-12-17 19:04:22,463 INFO L226 Difference]: Without dead ends: 3219 [2021-12-17 19:04:22,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 19:04:22,466 INFO L933 BasicCegarLoop]: 4278 mSDtfsCounter, 4633 mSDsluCounter, 16446 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4644 SdHoareTripleChecker+Valid, 20724 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 19:04:22,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4644 Valid, 20724 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 19:04:22,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2021-12-17 19:04:22,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 2938. [2021-12-17 19:04:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2832 states have (on average 1.7778954802259888) internal successors, (5035), 2838 states have internal predecessors, (5035), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2021-12-17 19:04:22,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 5188 transitions. [2021-12-17 19:04:22,532 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 5188 transitions. Word has length 90 [2021-12-17 19:04:22,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:04:22,533 INFO L470 AbstractCegarLoop]: Abstraction has 2938 states and 5188 transitions. [2021-12-17 19:04:22,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:22,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 5188 transitions. [2021-12-17 19:04:22,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-17 19:04:22,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:04:22,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:04:22,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 19:04:22,535 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:04:22,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:04:22,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1800696602, now seen corresponding path program 1 times [2021-12-17 19:04:22,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:04:22,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802818128] [2021-12-17 19:04:22,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:22,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:04:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:22,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:04:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:22,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 19:04:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:22,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 19:04:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:22,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 19:04:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:22,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 19:04:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:04:22,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:04:22,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802818128] [2021-12-17 19:04:22,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802818128] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:04:22,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:04:22,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:04:22,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452236851] [2021-12-17 19:04:22,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:04:22,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:04:22,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:04:22,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:04:22,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:04:22,607 INFO L87 Difference]: Start difference. First operand 2938 states and 5188 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:23,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:04:23,654 INFO L93 Difference]: Finished difference Result 4824 states and 8092 transitions. [2021-12-17 19:04:23,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 19:04:23,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-17 19:04:23,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:04:23,668 INFO L225 Difference]: With dead ends: 4824 [2021-12-17 19:04:23,669 INFO L226 Difference]: Without dead ends: 4019 [2021-12-17 19:04:23,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 19:04:23,673 INFO L933 BasicCegarLoop]: 4377 mSDtfsCounter, 4583 mSDsluCounter, 16719 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4594 SdHoareTripleChecker+Valid, 21096 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 19:04:23,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4594 Valid, 21096 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 19:04:23,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2021-12-17 19:04:23,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 3569. [2021-12-17 19:04:23,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3569 states, 3383 states have (on average 1.7324859592078037) internal successors, (5861), 3393 states have internal predecessors, (5861), 122 states have call successors, (122), 54 states have call predecessors, (122), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2021-12-17 19:04:23,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3569 states to 3569 states and 6140 transitions. [2021-12-17 19:04:23,786 INFO L78 Accepts]: Start accepts. Automaton has 3569 states and 6140 transitions. Word has length 90 [2021-12-17 19:04:23,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:04:23,787 INFO L470 AbstractCegarLoop]: Abstraction has 3569 states and 6140 transitions. [2021-12-17 19:04:23,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:23,787 INFO L276 IsEmpty]: Start isEmpty. Operand 3569 states and 6140 transitions. [2021-12-17 19:04:23,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-17 19:04:23,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:04:23,789 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] [2021-12-17 19:04:23,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 19:04:23,790 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:04:23,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:04:23,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1877597400, now seen corresponding path program 1 times [2021-12-17 19:04:23,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:04:23,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677785842] [2021-12-17 19:04:23,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:23,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:04:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:23,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:04:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:23,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 19:04:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:23,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 19:04:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:23,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 19:04:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:23,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 19:04:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:23,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:04:23,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:04:23,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677785842] [2021-12-17 19:04:23,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677785842] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:04:23,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:04:23,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:04:23,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699300482] [2021-12-17 19:04:23,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:04:23,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:04:23,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:04:23,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:04:23,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:04:23,881 INFO L87 Difference]: Start difference. First operand 3569 states and 6140 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:24,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:04:24,485 INFO L93 Difference]: Finished difference Result 5448 states and 9055 transitions. [2021-12-17 19:04:24,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:04:24,486 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-17 19:04:24,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:04:24,498 INFO L225 Difference]: With dead ends: 5448 [2021-12-17 19:04:24,498 INFO L226 Difference]: Without dead ends: 4012 [2021-12-17 19:04:24,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:04:24,503 INFO L933 BasicCegarLoop]: 4212 mSDtfsCounter, 4420 mSDsluCounter, 16250 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4432 SdHoareTripleChecker+Valid, 20462 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 19:04:24,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4432 Valid, 20462 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 19:04:24,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4012 states. [2021-12-17 19:04:24,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4012 to 3569. [2021-12-17 19:04:24,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3569 states, 3383 states have (on average 1.729825598581141) internal successors, (5852), 3393 states have internal predecessors, (5852), 122 states have call successors, (122), 54 states have call predecessors, (122), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2021-12-17 19:04:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3569 states to 3569 states and 6131 transitions. [2021-12-17 19:04:24,592 INFO L78 Accepts]: Start accepts. Automaton has 3569 states and 6131 transitions. Word has length 90 [2021-12-17 19:04:24,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:04:24,593 INFO L470 AbstractCegarLoop]: Abstraction has 3569 states and 6131 transitions. [2021-12-17 19:04:24,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3569 states and 6131 transitions. [2021-12-17 19:04:24,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-17 19:04:24,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:04:24,594 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] [2021-12-17 19:04:24,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 19:04:24,595 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:04:24,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:04:24,595 INFO L85 PathProgramCache]: Analyzing trace with hash -508912106, now seen corresponding path program 1 times [2021-12-17 19:04:24,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:04:24,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482462865] [2021-12-17 19:04:24,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:24,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:04:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:24,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:04:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:24,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 19:04:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:24,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 19:04:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:24,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 19:04:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:24,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 19:04:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:04:24,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:04:24,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482462865] [2021-12-17 19:04:24,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482462865] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:04:24,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:04:24,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:04:24,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246195397] [2021-12-17 19:04:24,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:04:24,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:04:24,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:04:24,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:04:24,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:04:24,673 INFO L87 Difference]: Start difference. First operand 3569 states and 6131 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:25,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:04:25,887 INFO L93 Difference]: Finished difference Result 7460 states and 12060 transitions. [2021-12-17 19:04:25,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 19:04:25,888 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-17 19:04:25,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:04:25,909 INFO L225 Difference]: With dead ends: 7460 [2021-12-17 19:04:25,910 INFO L226 Difference]: Without dead ends: 6024 [2021-12-17 19:04:25,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 19:04:25,916 INFO L933 BasicCegarLoop]: 4420 mSDtfsCounter, 4603 mSDsluCounter, 16708 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4613 SdHoareTripleChecker+Valid, 21128 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 19:04:25,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4613 Valid, 21128 Invalid, 1481 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 19:04:25,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6024 states. [2021-12-17 19:04:26,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6024 to 4790. [2021-12-17 19:04:26,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4790 states, 4452 states have (on average 1.6734052111410602) internal successors, (7450), 4470 states have internal predecessors, (7450), 218 states have call successors, (218), 102 states have call predecessors, (218), 118 states have return successors, (315), 233 states have call predecessors, (315), 218 states have call successors, (315) [2021-12-17 19:04:26,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4790 states to 4790 states and 7983 transitions. [2021-12-17 19:04:26,065 INFO L78 Accepts]: Start accepts. Automaton has 4790 states and 7983 transitions. Word has length 90 [2021-12-17 19:04:26,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:04:26,065 INFO L470 AbstractCegarLoop]: Abstraction has 4790 states and 7983 transitions. [2021-12-17 19:04:26,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:26,067 INFO L276 IsEmpty]: Start isEmpty. Operand 4790 states and 7983 transitions. [2021-12-17 19:04:26,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-17 19:04:26,069 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:04:26,069 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] [2021-12-17 19:04:26,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 19:04:26,070 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:04:26,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:04:26,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1001538280, now seen corresponding path program 1 times [2021-12-17 19:04:26,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:04:26,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127983906] [2021-12-17 19:04:26,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:26,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:04:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:26,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:04:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:26,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 19:04:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:26,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 19:04:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:26,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 19:04:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:26,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 19:04:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:26,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:04:26,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:04:26,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127983906] [2021-12-17 19:04:26,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127983906] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:04:26,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:04:26,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:04:26,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390081047] [2021-12-17 19:04:26,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:04:26,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:04:26,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:04:26,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:04:26,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:04:26,145 INFO L87 Difference]: Start difference. First operand 4790 states and 7983 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:26,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:04:26,710 INFO L93 Difference]: Finished difference Result 8198 states and 13250 transitions. [2021-12-17 19:04:26,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:04:26,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-17 19:04:26,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:04:26,725 INFO L225 Difference]: With dead ends: 8198 [2021-12-17 19:04:26,726 INFO L226 Difference]: Without dead ends: 5541 [2021-12-17 19:04:26,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:04:26,734 INFO L933 BasicCegarLoop]: 4205 mSDtfsCounter, 4419 mSDsluCounter, 16250 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4431 SdHoareTripleChecker+Valid, 20455 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 19:04:26,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4431 Valid, 20455 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 19:04:26,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5541 states. [2021-12-17 19:04:26,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5541 to 4790. [2021-12-17 19:04:26,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4790 states, 4452 states have (on average 1.6695867026055706) internal successors, (7433), 4470 states have internal predecessors, (7433), 218 states have call successors, (218), 102 states have call predecessors, (218), 118 states have return successors, (315), 233 states have call predecessors, (315), 218 states have call successors, (315) [2021-12-17 19:04:26,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4790 states to 4790 states and 7966 transitions. [2021-12-17 19:04:26,856 INFO L78 Accepts]: Start accepts. Automaton has 4790 states and 7966 transitions. Word has length 90 [2021-12-17 19:04:26,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:04:26,857 INFO L470 AbstractCegarLoop]: Abstraction has 4790 states and 7966 transitions. [2021-12-17 19:04:26,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 4790 states and 7966 transitions. [2021-12-17 19:04:26,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-17 19:04:26,862 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:04:26,862 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] [2021-12-17 19:04:26,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 19:04:26,862 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:04:26,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:04:26,863 INFO L85 PathProgramCache]: Analyzing trace with hash -47598122, now seen corresponding path program 1 times [2021-12-17 19:04:26,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:04:26,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78967210] [2021-12-17 19:04:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:26,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:04:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:26,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:04:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:26,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 19:04:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:26,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 19:04:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:26,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 19:04:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:26,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 19:04:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:26,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:04:26,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:04:26,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78967210] [2021-12-17 19:04:26,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78967210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:04:26,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:04:26,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:04:26,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376941034] [2021-12-17 19:04:26,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:04:26,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:04:26,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:04:26,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:04:26,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:04:26,936 INFO L87 Difference]: Start difference. First operand 4790 states and 7966 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:28,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:04:28,049 INFO L93 Difference]: Finished difference Result 11705 states and 18470 transitions. [2021-12-17 19:04:28,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 19:04:28,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-17 19:04:28,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:04:28,110 INFO L225 Difference]: With dead ends: 11705 [2021-12-17 19:04:28,110 INFO L226 Difference]: Without dead ends: 9048 [2021-12-17 19:04:28,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 19:04:28,120 INFO L933 BasicCegarLoop]: 4350 mSDtfsCounter, 4620 mSDsluCounter, 16711 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4636 SdHoareTripleChecker+Valid, 21061 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 19:04:28,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4636 Valid, 21061 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 19:04:28,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9048 states. [2021-12-17 19:04:28,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9048 to 7276. [2021-12-17 19:04:28,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7276 states, 6642 states have (on average 1.6099066546221017) internal successors, (10693), 6676 states have internal predecessors, (10693), 402 states have call successors, (402), 198 states have call predecessors, (402), 230 states have return successors, (677), 433 states have call predecessors, (677), 402 states have call successors, (677) [2021-12-17 19:04:28,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7276 states to 7276 states and 11772 transitions. [2021-12-17 19:04:28,385 INFO L78 Accepts]: Start accepts. Automaton has 7276 states and 11772 transitions. Word has length 90 [2021-12-17 19:04:28,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:04:28,386 INFO L470 AbstractCegarLoop]: Abstraction has 7276 states and 11772 transitions. [2021-12-17 19:04:28,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:28,386 INFO L276 IsEmpty]: Start isEmpty. Operand 7276 states and 11772 transitions. [2021-12-17 19:04:28,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-17 19:04:28,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:04:28,390 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] [2021-12-17 19:04:28,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 19:04:28,391 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:04:28,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:04:28,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1263751848, now seen corresponding path program 1 times [2021-12-17 19:04:28,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:04:28,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494893705] [2021-12-17 19:04:28,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:28,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:04:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:28,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:04:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:28,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 19:04:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:28,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 19:04:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:28,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 19:04:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:28,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 19:04:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:28,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:04:28,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:04:28,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494893705] [2021-12-17 19:04:28,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494893705] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:04:28,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:04:28,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:04:28,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907648621] [2021-12-17 19:04:28,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:04:28,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:04:28,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:04:28,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:04:28,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:04:28,476 INFO L87 Difference]: Start difference. First operand 7276 states and 11772 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:29,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:04:29,099 INFO L93 Difference]: Finished difference Result 13726 states and 21773 transitions. [2021-12-17 19:04:29,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:04:29,099 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-17 19:04:29,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:04:29,123 INFO L225 Difference]: With dead ends: 13726 [2021-12-17 19:04:29,123 INFO L226 Difference]: Without dead ends: 8583 [2021-12-17 19:04:29,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:04:29,138 INFO L933 BasicCegarLoop]: 4199 mSDtfsCounter, 4418 mSDsluCounter, 16250 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4430 SdHoareTripleChecker+Valid, 20449 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 19:04:29,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4430 Valid, 20449 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 19:04:29,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8583 states. [2021-12-17 19:04:29,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8583 to 7276. [2021-12-17 19:04:29,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7276 states, 6642 states have (on average 1.6049382716049383) internal successors, (10660), 6676 states have internal predecessors, (10660), 402 states have call successors, (402), 198 states have call predecessors, (402), 230 states have return successors, (677), 433 states have call predecessors, (677), 402 states have call successors, (677) [2021-12-17 19:04:29,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7276 states to 7276 states and 11739 transitions. [2021-12-17 19:04:29,362 INFO L78 Accepts]: Start accepts. Automaton has 7276 states and 11739 transitions. Word has length 90 [2021-12-17 19:04:29,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:04:29,364 INFO L470 AbstractCegarLoop]: Abstraction has 7276 states and 11739 transitions. [2021-12-17 19:04:29,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:29,364 INFO L276 IsEmpty]: Start isEmpty. Operand 7276 states and 11739 transitions. [2021-12-17 19:04:29,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-17 19:04:29,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:04:29,368 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] [2021-12-17 19:04:29,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 19:04:29,369 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:04:29,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:04:29,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1995719274, now seen corresponding path program 1 times [2021-12-17 19:04:29,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:04:29,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249364841] [2021-12-17 19:04:29,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:29,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:04:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:29,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:04:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:29,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 19:04:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:29,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 19:04:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:29,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 19:04:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:29,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 19:04:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:04:29,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:04:29,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249364841] [2021-12-17 19:04:29,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249364841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:04:29,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:04:29,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 19:04:29,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110397000] [2021-12-17 19:04:29,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:04:29,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 19:04:29,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:04:29,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 19:04:29,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 19:04:29,446 INFO L87 Difference]: Start difference. First operand 7276 states and 11739 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:30,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:04:30,549 INFO L93 Difference]: Finished difference Result 16947 states and 26412 transitions. [2021-12-17 19:04:30,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 19:04:30,550 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2021-12-17 19:04:30,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:04:30,580 INFO L225 Difference]: With dead ends: 16947 [2021-12-17 19:04:30,580 INFO L226 Difference]: Without dead ends: 11805 [2021-12-17 19:04:30,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-17 19:04:30,598 INFO L933 BasicCegarLoop]: 4469 mSDtfsCounter, 4762 mSDsluCounter, 12431 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4791 SdHoareTripleChecker+Valid, 16900 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 19:04:30,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4791 Valid, 16900 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 19:04:30,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11805 states. [2021-12-17 19:04:30,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11805 to 9886. [2021-12-17 19:04:30,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9886 states, 8920 states have (on average 1.5650224215246638) internal successors, (13960), 8987 states have internal predecessors, (13960), 616 states have call successors, (616), 300 states have call predecessors, (616), 348 states have return successors, (973), 630 states have call predecessors, (973), 616 states have call successors, (973) [2021-12-17 19:04:30,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9886 states to 9886 states and 15549 transitions. [2021-12-17 19:04:30,969 INFO L78 Accepts]: Start accepts. Automaton has 9886 states and 15549 transitions. Word has length 90 [2021-12-17 19:04:30,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:04:30,970 INFO L470 AbstractCegarLoop]: Abstraction has 9886 states and 15549 transitions. [2021-12-17 19:04:30,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:04:30,970 INFO L276 IsEmpty]: Start isEmpty. Operand 9886 states and 15549 transitions. [2021-12-17 19:04:30,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-17 19:04:30,986 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:04:30,986 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:04:30,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 19:04:30,987 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:04:30,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:04:30,987 INFO L85 PathProgramCache]: Analyzing trace with hash 499790298, now seen corresponding path program 1 times [2021-12-17 19:04:30,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:04:30,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822088749] [2021-12-17 19:04:30,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:30,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:04:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:31,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:04:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:31,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 19:04:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:31,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 19:04:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:31,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 19:04:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:31,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 19:04:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:31,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-17 19:04:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:31,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 19:04:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:31,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:04:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:31,099 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 19:04:31,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:04:31,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822088749] [2021-12-17 19:04:31,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822088749] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 19:04:31,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131163203] [2021-12-17 19:04:31,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:31,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 19:04:31,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:04:31,122 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 19:04:31,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 19:04:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:31,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 19:04:31,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 19:04:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 19:04:31,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 19:04:31,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131163203] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:04:31,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 19:04:31,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 19:04:31,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133133790] [2021-12-17 19:04:31,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:04:31,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 19:04:31,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:04:31,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 19:04:31,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:04:31,435 INFO L87 Difference]: Start difference. First operand 9886 states and 15549 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 19:04:31,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:04:31,951 INFO L93 Difference]: Finished difference Result 25211 states and 38691 transitions. [2021-12-17 19:04:31,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 19:04:31,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 146 [2021-12-17 19:04:31,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:04:31,999 INFO L225 Difference]: With dead ends: 25211 [2021-12-17 19:04:31,999 INFO L226 Difference]: Without dead ends: 17459 [2021-12-17 19:04:32,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:04:32,025 INFO L933 BasicCegarLoop]: 4230 mSDtfsCounter, 4170 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4170 SdHoareTripleChecker+Valid, 4464 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:04:32,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4170 Valid, 4464 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 19:04:32,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17459 states. [2021-12-17 19:04:32,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17459 to 17357. [2021-12-17 19:04:32,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17357 states, 15457 states have (on average 1.5232580707769943) internal successors, (23545), 15589 states have internal predecessors, (23545), 1202 states have call successors, (1202), 600 states have call predecessors, (1202), 696 states have return successors, (1885), 1199 states have call predecessors, (1885), 1202 states have call successors, (1885) [2021-12-17 19:04:32,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17357 states to 17357 states and 26632 transitions. [2021-12-17 19:04:32,590 INFO L78 Accepts]: Start accepts. Automaton has 17357 states and 26632 transitions. Word has length 146 [2021-12-17 19:04:32,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:04:32,591 INFO L470 AbstractCegarLoop]: Abstraction has 17357 states and 26632 transitions. [2021-12-17 19:04:32,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 19:04:32,591 INFO L276 IsEmpty]: Start isEmpty. Operand 17357 states and 26632 transitions. [2021-12-17 19:04:32,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-17 19:04:32,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:04:32,616 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:04:32,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 19:04:32,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-17 19:04:32,848 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:04:32,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:04:32,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1368264198, now seen corresponding path program 1 times [2021-12-17 19:04:32,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:04:32,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795064993] [2021-12-17 19:04:32,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:32,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:04:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:32,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:04:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:32,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 19:04:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:32,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 19:04:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:32,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 19:04:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:32,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 19:04:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:32,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-17 19:04:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:32,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 19:04:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:32,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:04:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 19:04:32,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:04:32,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795064993] [2021-12-17 19:04:32,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795064993] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 19:04:32,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619406635] [2021-12-17 19:04:32,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:32,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 19:04:32,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:04:32,960 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 19:04:32,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 19:04:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:33,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 19:04:33,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 19:04:33,290 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 19:04:33,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 19:04:33,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619406635] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:04:33,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 19:04:33,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 19:04:33,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262493118] [2021-12-17 19:04:33,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:04:33,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 19:04:33,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:04:33,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 19:04:33,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:04:33,293 INFO L87 Difference]: Start difference. First operand 17357 states and 26632 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 19:04:34,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:04:34,026 INFO L93 Difference]: Finished difference Result 47302 states and 71706 transitions. [2021-12-17 19:04:34,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 19:04:34,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 146 [2021-12-17 19:04:34,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:04:34,131 INFO L225 Difference]: With dead ends: 47302 [2021-12-17 19:04:34,131 INFO L226 Difference]: Without dead ends: 32079 [2021-12-17 19:04:34,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:04:34,171 INFO L933 BasicCegarLoop]: 4230 mSDtfsCounter, 4164 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4164 SdHoareTripleChecker+Valid, 4464 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:04:34,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4164 Valid, 4464 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 19:04:34,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32079 states. [2021-12-17 19:04:35,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32079 to 31877. [2021-12-17 19:04:35,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31877 states, 28183 states have (on average 1.4979597629776815) internal successors, (42217), 28445 states have internal predecessors, (42217), 2300 states have call successors, (2300), 1200 states have call predecessors, (2300), 1392 states have return successors, (3635), 2263 states have call predecessors, (3635), 2300 states have call successors, (3635) [2021-12-17 19:04:35,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31877 states to 31877 states and 48152 transitions. [2021-12-17 19:04:35,360 INFO L78 Accepts]: Start accepts. Automaton has 31877 states and 48152 transitions. Word has length 146 [2021-12-17 19:04:35,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:04:35,361 INFO L470 AbstractCegarLoop]: Abstraction has 31877 states and 48152 transitions. [2021-12-17 19:04:35,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 19:04:35,362 INFO L276 IsEmpty]: Start isEmpty. Operand 31877 states and 48152 transitions. [2021-12-17 19:04:35,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-17 19:04:35,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:04:35,409 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:04:35,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 19:04:35,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-17 19:04:35,623 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:04:35,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:04:35,624 INFO L85 PathProgramCache]: Analyzing trace with hash -948680166, now seen corresponding path program 1 times [2021-12-17 19:04:35,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:04:35,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624421413] [2021-12-17 19:04:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:35,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:04:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:35,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:04:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:35,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 19:04:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:35,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 19:04:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:35,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 19:04:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:35,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 19:04:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:35,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-17 19:04:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:35,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 19:04:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:35,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:04:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:35,717 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 19:04:35,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:04:35,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624421413] [2021-12-17 19:04:35,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624421413] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 19:04:35,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716753011] [2021-12-17 19:04:35,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:35,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 19:04:35,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:04:35,742 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 19:04:35,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 19:04:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:35,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 19:04:35,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 19:04:36,030 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-17 19:04:36,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 19:04:36,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716753011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:04:36,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 19:04:36,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-17 19:04:36,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075238326] [2021-12-17 19:04:36,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:04:36,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 19:04:36,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:04:36,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 19:04:36,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:04:36,034 INFO L87 Difference]: Start difference. First operand 31877 states and 48152 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-17 19:04:37,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:04:37,824 INFO L93 Difference]: Finished difference Result 90351 states and 136551 transitions. [2021-12-17 19:04:37,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 19:04:37,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 146 [2021-12-17 19:04:37,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:04:38,079 INFO L225 Difference]: With dead ends: 90351 [2021-12-17 19:04:38,080 INFO L226 Difference]: Without dead ends: 60609 [2021-12-17 19:04:38,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:04:38,157 INFO L933 BasicCegarLoop]: 4456 mSDtfsCounter, 230 mSDsluCounter, 4218 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 8674 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:04:38,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 8674 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 19:04:38,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60609 states. [2021-12-17 19:04:40,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60609 to 60609. [2021-12-17 19:04:40,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60609 states, 53360 states have (on average 1.4777548725637182) internal successors, (78853), 53815 states have internal predecessors, (78853), 4463 states have call successors, (4463), 2400 states have call predecessors, (4463), 2784 states have return successors, (8094), 4457 states have call predecessors, (8094), 4463 states have call successors, (8094) [2021-12-17 19:04:40,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60609 states to 60609 states and 91410 transitions. [2021-12-17 19:04:40,544 INFO L78 Accepts]: Start accepts. Automaton has 60609 states and 91410 transitions. Word has length 146 [2021-12-17 19:04:40,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:04:40,544 INFO L470 AbstractCegarLoop]: Abstraction has 60609 states and 91410 transitions. [2021-12-17 19:04:40,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-17 19:04:40,545 INFO L276 IsEmpty]: Start isEmpty. Operand 60609 states and 91410 transitions. [2021-12-17 19:04:40,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:04:40,935 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:04:40,935 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:04:40,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 19:04:41,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 19:04:41,153 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:04:41,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:04:41,154 INFO L85 PathProgramCache]: Analyzing trace with hash 682317025, now seen corresponding path program 1 times [2021-12-17 19:04:41,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:04:41,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660541846] [2021-12-17 19:04:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:41,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:04:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:41,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:04:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:41,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 19:04:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:41,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 19:04:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:41,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 19:04:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:41,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 19:04:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:41,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-17 19:04:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:41,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 19:04:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:41,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-17 19:04:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:41,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 19:04:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:41,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-17 19:04:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-17 19:04:41,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:04:41,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660541846] [2021-12-17 19:04:41,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660541846] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 19:04:41,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710800327] [2021-12-17 19:04:41,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:41,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 19:04:41,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:04:41,266 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 19:04:41,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 19:04:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:41,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 19:04:41,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 19:04:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-17 19:04:41,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 19:04:41,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710800327] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:04:41,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 19:04:41,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 19:04:41,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018404876] [2021-12-17 19:04:41,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:04:41,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 19:04:41,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:04:41,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 19:04:41,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:04:41,931 INFO L87 Difference]: Start difference. First operand 60609 states and 91410 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-17 19:04:45,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:04:45,476 INFO L93 Difference]: Finished difference Result 175543 states and 265601 transitions. [2021-12-17 19:04:45,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 19:04:45,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 190 [2021-12-17 19:04:45,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:04:46,030 INFO L225 Difference]: With dead ends: 175543 [2021-12-17 19:04:46,030 INFO L226 Difference]: Without dead ends: 117075 [2021-12-17 19:04:46,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:04:46,142 INFO L933 BasicCegarLoop]: 4230 mSDtfsCounter, 4109 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4109 SdHoareTripleChecker+Valid, 4464 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:04:46,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4109 Valid, 4464 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 19:04:46,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117075 states. [2021-12-17 19:04:50,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117075 to 116273. [2021-12-17 19:04:50,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116273 states, 102184 states have (on average 1.4691634698191498) internal successors, (150125), 103091 states have internal predecessors, (150125), 8519 states have call successors, (8519), 4800 states have call predecessors, (8519), 5568 states have return successors, (15518), 8445 states have call predecessors, (15518), 8519 states have call successors, (15518) [2021-12-17 19:04:51,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116273 states to 116273 states and 174162 transitions. [2021-12-17 19:04:51,218 INFO L78 Accepts]: Start accepts. Automaton has 116273 states and 174162 transitions. Word has length 190 [2021-12-17 19:04:51,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:04:51,220 INFO L470 AbstractCegarLoop]: Abstraction has 116273 states and 174162 transitions. [2021-12-17 19:04:51,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-17 19:04:51,220 INFO L276 IsEmpty]: Start isEmpty. Operand 116273 states and 174162 transitions. [2021-12-17 19:04:51,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:04:51,619 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:04:51,619 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:04:51,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 19:04:51,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-17 19:04:51,836 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:04:51,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:04:51,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1529313715, now seen corresponding path program 1 times [2021-12-17 19:04:51,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:04:51,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930864974] [2021-12-17 19:04:51,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:51,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:04:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:51,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:04:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:51,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 19:04:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:51,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 19:04:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:51,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 19:04:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:51,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 19:04:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:51,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-17 19:04:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:51,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 19:04:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:51,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:04:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:51,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 19:04:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:51,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-17 19:04:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-17 19:04:51,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:04:51,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930864974] [2021-12-17 19:04:51,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930864974] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 19:04:51,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459481801] [2021-12-17 19:04:51,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:04:51,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 19:04:51,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:04:51,960 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 19:04:51,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 19:04:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:04:52,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 19:04:52,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 19:04:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-17 19:04:52,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 19:04:52,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459481801] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:04:52,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 19:04:52,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 19:04:52,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833489556] [2021-12-17 19:04:52,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:04:52,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 19:04:52,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:04:52,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 19:04:52,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:04:52,295 INFO L87 Difference]: Start difference. First operand 116273 states and 174162 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)