./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_label46+token_ring.02.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 ff26d52d3dd6862aaa491849b175f59b72df2f5a860b195ac82ad5bea041e83f --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 19:39:32,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 19:39:32,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 19:39:32,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 19:39:32,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 19:39:32,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 19:39:32,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 19:39:32,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 19:39:32,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 19:39:32,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 19:39:32,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 19:39:32,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 19:39:32,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 19:39:32,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 19:39:32,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 19:39:32,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 19:39:32,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 19:39:32,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 19:39:32,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 19:39:32,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 19:39:32,131 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 19:39:32,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 19:39:32,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 19:39:32,136 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 19:39:32,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 19:39:32,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 19:39:32,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 19:39:32,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 19:39:32,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 19:39:32,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 19:39:32,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 19:39:32,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 19:39:32,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 19:39:32,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 19:39:32,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 19:39:32,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 19:39:32,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 19:39:32,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 19:39:32,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 19:39:32,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 19:39:32,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 19:39:32,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 19:39:32,158 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 19:39:32,189 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 19:39:32,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 19:39:32,190 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 19:39:32,190 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 19:39:32,191 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 19:39:32,191 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 19:39:32,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 19:39:32,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 19:39:32,192 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 19:39:32,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 19:39:32,193 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 19:39:32,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 19:39:32,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 19:39:32,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 19:39:32,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 19:39:32,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 19:39:32,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 19:39:32,195 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 19:39:32,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 19:39:32,195 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 19:39:32,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 19:39:32,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 19:39:32,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 19:39:32,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 19:39:32,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:39:32,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 19:39:32,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 19:39:32,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 19:39:32,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 19:39:32,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 19:39:32,197 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 19:39:32,197 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 19:39:32,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 19:39:32,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff26d52d3dd6862aaa491849b175f59b72df2f5a860b195ac82ad5bea041e83f [2022-07-22 19:39:32,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 19:39:32,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 19:39:32,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 19:39:32,437 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 19:39:32,437 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 19:39:32,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-1.c [2022-07-22 19:39:32,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab7c3bbc8/7e649b662a404759852c72aec43bab10/FLAG54c4ebef6 [2022-07-22 19:39:33,342 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 19:39:33,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-1.c [2022-07-22 19:39:33,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab7c3bbc8/7e649b662a404759852c72aec43bab10/FLAG54c4ebef6 [2022-07-22 19:39:33,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab7c3bbc8/7e649b662a404759852c72aec43bab10 [2022-07-22 19:39:33,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 19:39:33,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 19:39:33,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 19:39:33,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 19:39:33,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 19:39:33,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:39:33" (1/1) ... [2022-07-22 19:39:33,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2769be10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:33, skipping insertion in model container [2022-07-22 19:39:33,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:39:33" (1/1) ... [2022-07-22 19:39:33,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 19:39:33,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 19:39:35,592 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_label46+token_ring.02.cil-1.c[382357,382370] [2022-07-22 19:39:35,620 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_label46+token_ring.02.cil-1.c[383339,383352] [2022-07-22 19:39:35,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:39:35,750 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 19:39:36,556 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_label46+token_ring.02.cil-1.c[382357,382370] [2022-07-22 19:39:36,560 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_label46+token_ring.02.cil-1.c[383339,383352] [2022-07-22 19:39:36,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:39:36,636 INFO L208 MainTranslator]: Completed translation [2022-07-22 19:39:36,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:36 WrapperNode [2022-07-22 19:39:36,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 19:39:36,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 19:39:36,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 19:39:36,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 19:39:36,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:36" (1/1) ... [2022-07-22 19:39:36,759 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:36" (1/1) ... [2022-07-22 19:39:37,243 INFO L137 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12619 [2022-07-22 19:39:37,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 19:39:37,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 19:39:37,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 19:39:37,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 19:39:37,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:36" (1/1) ... [2022-07-22 19:39:37,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:36" (1/1) ... [2022-07-22 19:39:37,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:36" (1/1) ... [2022-07-22 19:39:37,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:36" (1/1) ... [2022-07-22 19:39:37,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:36" (1/1) ... [2022-07-22 19:39:37,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:36" (1/1) ... [2022-07-22 19:39:37,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:36" (1/1) ... [2022-07-22 19:39:37,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 19:39:37,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 19:39:37,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 19:39:37,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 19:39:37,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:36" (1/1) ... [2022-07-22 19:39:37,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:39:37,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:39:37,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 19:39:37,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 19:39:37,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 19:39:37,798 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 19:39:37,798 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 19:39:37,800 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 19:39:37,800 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 19:39:37,800 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 19:39:37,800 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 19:39:37,801 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 19:39:37,801 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 19:39:37,801 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 19:39:37,801 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 19:39:37,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 19:39:37,801 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 19:39:37,802 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 19:39:37,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 19:39:37,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 19:39:37,958 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 19:39:37,961 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 19:39:43,655 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 19:39:43,688 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 19:39:43,689 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-22 19:39:43,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:39:43 BoogieIcfgContainer [2022-07-22 19:39:43,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 19:39:43,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 19:39:43,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 19:39:43,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 19:39:43,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:39:33" (1/3) ... [2022-07-22 19:39:43,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3217ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:39:43, skipping insertion in model container [2022-07-22 19:39:43,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:39:36" (2/3) ... [2022-07-22 19:39:43,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3217ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:39:43, skipping insertion in model container [2022-07-22 19:39:43,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:39:43" (3/3) ... [2022-07-22 19:39:43,703 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.02.cil-1.c [2022-07-22 19:39:43,717 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 19:39:43,717 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 19:39:43,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 19:39:43,808 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4e0820f8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6cd239e8 [2022-07-22 19:39:43,808 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 19:39:43,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 2315 states, 2290 states have (on average 1.8572052401746726) internal successors, (4253), 2293 states have internal predecessors, (4253), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-22 19:39:43,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 19:39:43,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:39:43,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:39:43,834 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:39:43,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:39:43,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1170312139, now seen corresponding path program 1 times [2022-07-22 19:39:43,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:39:43,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392748119] [2022-07-22 19:39:43,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:43,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:39:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:44,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:39:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:44,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:39:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:44,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:39:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:44,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:39:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:44,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:39:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:44,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:39:44,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:39:44,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392748119] [2022-07-22 19:39:44,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392748119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:39:44,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:39:44,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:39:44,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440517546] [2022-07-22 19:39:44,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:39:44,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:39:44,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:39:44,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:39:44,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:39:44,150 INFO L87 Difference]: Start difference. First operand has 2315 states, 2290 states have (on average 1.8572052401746726) internal successors, (4253), 2293 states have internal predecessors, (4253), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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) [2022-07-22 19:39:45,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:39:45,057 INFO L93 Difference]: Finished difference Result 4802 states and 8845 transitions. [2022-07-22 19:39:45,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:39:45,060 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 68 [2022-07-22 19:39:45,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:39:45,081 INFO L225 Difference]: With dead ends: 4802 [2022-07-22 19:39:45,082 INFO L226 Difference]: Without dead ends: 2427 [2022-07-22 19:39:45,090 INFO L412 NwaCegarLoop]: 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 [2022-07-22 19:39:45,093 INFO L413 NwaCegarLoop]: 4248 mSDtfsCounter, 4428 mSDsluCounter, 12428 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4437 SdHoareTripleChecker+Valid, 16676 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:39:45,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4437 Valid, 16676 Invalid, 642 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 19:39:45,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2022-07-22 19:39:45,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2364. [2022-07-22 19:39:45,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 2322 states have (on average 1.8333333333333333) internal successors, (4257), 2325 states have internal predecessors, (4257), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-07-22 19:39:45,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 4314 transitions. [2022-07-22 19:39:45,305 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 4314 transitions. Word has length 68 [2022-07-22 19:39:45,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:39:45,305 INFO L495 AbstractCegarLoop]: Abstraction has 2364 states and 4314 transitions. [2022-07-22 19:39:45,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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) [2022-07-22 19:39:45,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 4314 transitions. [2022-07-22 19:39:45,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 19:39:45,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:39:45,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:39:45,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 19:39:45,310 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:39:45,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:39:45,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1597321137, now seen corresponding path program 1 times [2022-07-22 19:39:45,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:39:45,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838313963] [2022-07-22 19:39:45,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:45,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:39:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:45,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:39:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:45,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:39:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:45,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:39:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:45,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:39:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:45,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:39:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:45,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:39:45,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:39:45,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838313963] [2022-07-22 19:39:45,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838313963] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:39:45,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:39:45,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:39:45,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375109768] [2022-07-22 19:39:45,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:39:45,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:39:45,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:39:45,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:39:45,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:39:45,414 INFO L87 Difference]: Start difference. First operand 2364 states and 4314 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-22 19:39:46,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:39:46,362 INFO L93 Difference]: Finished difference Result 2807 states and 4974 transitions. [2022-07-22 19:39:46,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:39:46,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-22 19:39:46,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:39:46,376 INFO L225 Difference]: With dead ends: 2807 [2022-07-22 19:39:46,376 INFO L226 Difference]: Without dead ends: 2574 [2022-07-22 19:39:46,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:39:46,380 INFO L413 NwaCegarLoop]: 4246 mSDtfsCounter, 4351 mSDsluCounter, 16427 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4360 SdHoareTripleChecker+Valid, 20673 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:39:46,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4360 Valid, 20673 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 19:39:46,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-07-22 19:39:46,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 2473. [2022-07-22 19:39:46,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2413 states have (on average 1.8188976377952757) internal successors, (4389), 2417 states have internal predecessors, (4389), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2022-07-22 19:39:46,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4470 transitions. [2022-07-22 19:39:46,448 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4470 transitions. Word has length 68 [2022-07-22 19:39:46,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:39:46,448 INFO L495 AbstractCegarLoop]: Abstraction has 2473 states and 4470 transitions. [2022-07-22 19:39:46,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-22 19:39:46,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4470 transitions. [2022-07-22 19:39:46,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 19:39:46,450 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:39:46,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:39:46,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 19:39:46,451 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:39:46,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:39:46,452 INFO L85 PathProgramCache]: Analyzing trace with hash -721302131, now seen corresponding path program 1 times [2022-07-22 19:39:46,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:39:46,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466674706] [2022-07-22 19:39:46,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:46,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:39:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:46,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:39:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:46,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:39:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:46,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:39:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:46,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:39:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:46,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:39:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:39:46,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:39:46,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466674706] [2022-07-22 19:39:46,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466674706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:39:46,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:39:46,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:39:46,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446458476] [2022-07-22 19:39:46,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:39:46,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:39:46,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:39:46,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:39:46,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:39:46,540 INFO L87 Difference]: Start difference. First operand 2473 states and 4470 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-22 19:39:47,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:39:47,355 INFO L93 Difference]: Finished difference Result 3193 states and 5538 transitions. [2022-07-22 19:39:47,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:39:47,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-22 19:39:47,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:39:47,369 INFO L225 Difference]: With dead ends: 3193 [2022-07-22 19:39:47,369 INFO L226 Difference]: Without dead ends: 2851 [2022-07-22 19:39:47,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:39:47,373 INFO L413 NwaCegarLoop]: 4169 mSDtfsCounter, 4383 mSDsluCounter, 16249 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4392 SdHoareTripleChecker+Valid, 20418 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:39:47,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4392 Valid, 20418 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 19:39:47,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2022-07-22 19:39:47,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2692. [2022-07-22 19:39:47,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2596 states have (on average 1.7927580893682589) internal successors, (4654), 2602 states have internal predecessors, (4654), 60 states have call successors, (60), 30 states have call predecessors, (60), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2022-07-22 19:39:47,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4787 transitions. [2022-07-22 19:39:47,448 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4787 transitions. Word has length 68 [2022-07-22 19:39:47,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:39:47,449 INFO L495 AbstractCegarLoop]: Abstraction has 2692 states and 4787 transitions. [2022-07-22 19:39:47,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-22 19:39:47,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4787 transitions. [2022-07-22 19:39:47,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 19:39:47,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:39:47,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:39:47,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 19:39:47,451 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:39:47,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:39:47,452 INFO L85 PathProgramCache]: Analyzing trace with hash -277401457, now seen corresponding path program 1 times [2022-07-22 19:39:47,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:39:47,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60183944] [2022-07-22 19:39:47,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:47,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:39:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:47,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:39:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:47,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:39:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:47,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:39:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:47,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:39:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:47,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:39:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:47,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:39:47,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:39:47,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60183944] [2022-07-22 19:39:47,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60183944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:39:47,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:39:47,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:39:47,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628524992] [2022-07-22 19:39:47,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:39:47,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:39:47,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:39:47,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:39:47,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:39:47,528 INFO L87 Difference]: Start difference. First operand 2692 states and 4787 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-22 19:39:48,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:39:48,501 INFO L93 Difference]: Finished difference Result 4037 states and 6769 transitions. [2022-07-22 19:39:48,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:39:48,502 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-22 19:39:48,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:39:48,519 INFO L225 Difference]: With dead ends: 4037 [2022-07-22 19:39:48,519 INFO L226 Difference]: Without dead ends: 3476 [2022-07-22 19:39:48,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:39:48,524 INFO L413 NwaCegarLoop]: 4255 mSDtfsCounter, 4357 mSDsluCounter, 16416 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4365 SdHoareTripleChecker+Valid, 20671 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 19:39:48,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4365 Valid, 20671 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 19:39:48,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2022-07-22 19:39:48,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 3104. [2022-07-22 19:39:48,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 2940 states have (on average 1.7530612244897958) internal successors, (5154), 2950 states have internal predecessors, (5154), 100 states have call successors, (100), 54 states have call predecessors, (100), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2022-07-22 19:39:48,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5389 transitions. [2022-07-22 19:39:48,621 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5389 transitions. Word has length 68 [2022-07-22 19:39:48,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:39:48,622 INFO L495 AbstractCegarLoop]: Abstraction has 3104 states and 5389 transitions. [2022-07-22 19:39:48,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-22 19:39:48,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5389 transitions. [2022-07-22 19:39:48,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 19:39:48,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:39:48,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:39:48,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 19:39:48,625 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:39:48,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:39:48,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1988979729, now seen corresponding path program 1 times [2022-07-22 19:39:48,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:39:48,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21845389] [2022-07-22 19:39:48,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:48,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:39:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:48,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:39:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:48,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:39:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:48,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:39:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:48,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:39:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:48,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:39:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:48,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:39:48,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:39:48,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21845389] [2022-07-22 19:39:48,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21845389] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:39:48,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:39:48,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:39:48,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228595200] [2022-07-22 19:39:48,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:39:48,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:39:48,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:39:48,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:39:48,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:39:48,698 INFO L87 Difference]: Start difference. First operand 3104 states and 5389 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-22 19:39:49,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:39:49,566 INFO L93 Difference]: Finished difference Result 5435 states and 8809 transitions. [2022-07-22 19:39:49,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:39:49,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-22 19:39:49,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:39:49,587 INFO L225 Difference]: With dead ends: 5435 [2022-07-22 19:39:49,587 INFO L226 Difference]: Without dead ends: 4462 [2022-07-22 19:39:49,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:39:49,593 INFO L413 NwaCegarLoop]: 4224 mSDtfsCounter, 4362 mSDsluCounter, 16419 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4374 SdHoareTripleChecker+Valid, 20643 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:39:49,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4374 Valid, 20643 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 19:39:49,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4462 states. [2022-07-22 19:39:49,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4462 to 3941. [2022-07-22 19:39:49,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3941 states, 3645 states have (on average 1.696570644718793) internal successors, (6184), 3663 states have internal predecessors, (6184), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-07-22 19:39:49,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3941 states to 3941 states and 6633 transitions. [2022-07-22 19:39:49,726 INFO L78 Accepts]: Start accepts. Automaton has 3941 states and 6633 transitions. Word has length 68 [2022-07-22 19:39:49,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:39:49,727 INFO L495 AbstractCegarLoop]: Abstraction has 3941 states and 6633 transitions. [2022-07-22 19:39:49,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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) [2022-07-22 19:39:49,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3941 states and 6633 transitions. [2022-07-22 19:39:49,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 19:39:49,730 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:39:49,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:39:49,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 19:39:49,730 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:39:49,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:39:49,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1507899471, now seen corresponding path program 1 times [2022-07-22 19:39:49,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:39:49,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339236933] [2022-07-22 19:39:49,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:49,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:39:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:49,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:39:49,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:49,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:39:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:49,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:39:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:49,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:39:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:49,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:39:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:49,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:39:49,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:39:49,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339236933] [2022-07-22 19:39:49,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339236933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:39:49,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:39:49,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:39:49,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511823149] [2022-07-22 19:39:49,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:39:49,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:39:49,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:39:49,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:39:49,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:39:49,801 INFO L87 Difference]: Start difference. First operand 3941 states and 6633 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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) [2022-07-22 19:39:50,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:39:50,583 INFO L93 Difference]: Finished difference Result 7278 states and 11576 transitions. [2022-07-22 19:39:50,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:39:50,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 68 [2022-07-22 19:39:50,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:39:50,611 INFO L225 Difference]: With dead ends: 7278 [2022-07-22 19:39:50,611 INFO L226 Difference]: Without dead ends: 5469 [2022-07-22 19:39:50,620 INFO L412 NwaCegarLoop]: 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 [2022-07-22 19:39:50,621 INFO L413 NwaCegarLoop]: 4300 mSDtfsCounter, 4485 mSDsluCounter, 12242 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4510 SdHoareTripleChecker+Valid, 16542 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:39:50,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4510 Valid, 16542 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 19:39:50,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5469 states. [2022-07-22 19:39:50,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5469 to 4882. [2022-07-22 19:39:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 4428 states have (on average 1.6456639566395663) internal successors, (7287), 4463 states have internal predecessors, (7287), 272 states have call successors, (272), 156 states have call predecessors, (272), 180 states have return successors, (397), 278 states have call predecessors, (397), 272 states have call successors, (397) [2022-07-22 19:39:50,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 7956 transitions. [2022-07-22 19:39:50,780 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 7956 transitions. Word has length 68 [2022-07-22 19:39:50,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:39:50,781 INFO L495 AbstractCegarLoop]: Abstraction has 4882 states and 7956 transitions. [2022-07-22 19:39:50,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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) [2022-07-22 19:39:50,781 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 7956 transitions. [2022-07-22 19:39:50,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 19:39:50,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:39:50,789 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:39:50,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 19:39:50,789 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:39:50,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:39:50,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1262348608, now seen corresponding path program 1 times [2022-07-22 19:39:50,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:39:50,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680361869] [2022-07-22 19:39:50,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:50,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:39:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:50,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:39:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:50,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:39:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:50,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:39:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:50,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:39:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:50,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:39:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:50,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 19:39:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:50,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:39:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:50,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 19:39:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:50,889 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 19:39:50,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:39:50,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680361869] [2022-07-22 19:39:50,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680361869] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:39:50,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116733206] [2022-07-22 19:39:50,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:50,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:39:50,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:39:50,895 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:39:50,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 19:39:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:51,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:39:51,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:39:51,114 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 19:39:51,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:39:51,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116733206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:39:51,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:39:51,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 19:39:51,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266975193] [2022-07-22 19:39:51,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:39:51,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:39:51,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:39:51,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:39:51,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:39:51,118 INFO L87 Difference]: Start difference. First operand 4882 states and 7956 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2022-07-22 19:39:51,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:39:51,369 INFO L93 Difference]: Finished difference Result 10239 states and 15790 transitions. [2022-07-22 19:39:51,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:39:51,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 110 [2022-07-22 19:39:51,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:39:51,401 INFO L225 Difference]: With dead ends: 10239 [2022-07-22 19:39:51,402 INFO L226 Difference]: Without dead ends: 7489 [2022-07-22 19:39:51,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:39:51,411 INFO L413 NwaCegarLoop]: 4150 mSDtfsCounter, 4098 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4309 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 [2022-07-22 19:39:51,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4309 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:39:51,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7489 states. [2022-07-22 19:39:51,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7489 to 7435. [2022-07-22 19:39:51,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7435 states, 6567 states have (on average 1.5784985533729252) internal successors, (10366), 6635 states have internal predecessors, (10366), 510 states have call successors, (510), 308 states have call predecessors, (510), 356 states have return successors, (745), 507 states have call predecessors, (745), 510 states have call successors, (745) [2022-07-22 19:39:51,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7435 states to 7435 states and 11621 transitions. [2022-07-22 19:39:51,692 INFO L78 Accepts]: Start accepts. Automaton has 7435 states and 11621 transitions. Word has length 110 [2022-07-22 19:39:51,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:39:51,692 INFO L495 AbstractCegarLoop]: Abstraction has 7435 states and 11621 transitions. [2022-07-22 19:39:51,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2022-07-22 19:39:51,693 INFO L276 IsEmpty]: Start isEmpty. Operand 7435 states and 11621 transitions. [2022-07-22 19:39:51,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 19:39:51,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:39:51,703 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:39:51,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 19:39:51,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:39:51,919 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:39:51,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:39:51,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1095009120, now seen corresponding path program 1 times [2022-07-22 19:39:51,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:39:51,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930697502] [2022-07-22 19:39:51,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:51,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:39:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:51,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:39:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:51,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:39:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:51,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:39:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:52,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:39:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:52,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:39:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:52,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 19:39:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:52,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:39:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:52,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 19:39:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:52,035 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 19:39:52,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:39:52,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930697502] [2022-07-22 19:39:52,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930697502] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:39:52,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585843779] [2022-07-22 19:39:52,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:52,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:39:52,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:39:52,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:39:52,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 19:39:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:52,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:39:52,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:39:52,157 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 19:39:52,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:39:52,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585843779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:39:52,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:39:52,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 19:39:52,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844570422] [2022-07-22 19:39:52,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:39:52,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:39:52,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:39:52,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:39:52,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:39:52,160 INFO L87 Difference]: Start difference. First operand 7435 states and 11621 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2022-07-22 19:39:52,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:39:52,523 INFO L93 Difference]: Finished difference Result 17751 states and 26795 transitions. [2022-07-22 19:39:52,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:39:52,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 110 [2022-07-22 19:39:52,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:39:52,578 INFO L225 Difference]: With dead ends: 17751 [2022-07-22 19:39:52,578 INFO L226 Difference]: Without dead ends: 12449 [2022-07-22 19:39:52,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:39:52,604 INFO L413 NwaCegarLoop]: 4299 mSDtfsCounter, 154 mSDsluCounter, 4138 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 8437 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 [2022-07-22 19:39:52,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 8437 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:39:52,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12449 states. [2022-07-22 19:39:53,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12449 to 12449. [2022-07-22 19:39:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12449 states, 10768 states have (on average 1.5169947994056463) internal successors, (16335), 10885 states have internal predecessors, (16335), 975 states have call successors, (975), 608 states have call predecessors, (975), 704 states have return successors, (1596), 987 states have call predecessors, (1596), 975 states have call successors, (1596) [2022-07-22 19:39:53,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12449 states to 12449 states and 18906 transitions. [2022-07-22 19:39:53,216 INFO L78 Accepts]: Start accepts. Automaton has 12449 states and 18906 transitions. Word has length 110 [2022-07-22 19:39:53,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:39:53,217 INFO L495 AbstractCegarLoop]: Abstraction has 12449 states and 18906 transitions. [2022-07-22 19:39:53,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2022-07-22 19:39:53,217 INFO L276 IsEmpty]: Start isEmpty. Operand 12449 states and 18906 transitions. [2022-07-22 19:39:53,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-22 19:39:53,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:39:53,248 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 19:39:53,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 19:39:53,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-22 19:39:53,472 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:39:53,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:39:53,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1627368555, now seen corresponding path program 1 times [2022-07-22 19:39:53,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:39:53,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576614126] [2022-07-22 19:39:53,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:53,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:39:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:53,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:39:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:53,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:39:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:53,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:39:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:53,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:39:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:53,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:39:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:53,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 19:39:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:53,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:39:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:53,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:39:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:53,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:39:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:53,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 19:39:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:53,608 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-22 19:39:53,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:39:53,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576614126] [2022-07-22 19:39:53,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576614126] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:39:53,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462510786] [2022-07-22 19:39:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:53,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:39:53,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:39:53,611 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:39:53,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 19:39:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:53,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:39:53,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:39:53,859 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 19:39:53,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:39:53,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462510786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:39:53,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:39:53,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 19:39:53,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295644112] [2022-07-22 19:39:53,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:39:53,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:39:53,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:39:53,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:39:53,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:39:53,862 INFO L87 Difference]: Start difference. First operand 12449 states and 18906 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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) [2022-07-22 19:39:54,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:39:54,591 INFO L93 Difference]: Finished difference Result 32641 states and 48463 transitions. [2022-07-22 19:39:54,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:39:54,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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 142 [2022-07-22 19:39:54,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:39:54,673 INFO L225 Difference]: With dead ends: 32641 [2022-07-22 19:39:54,674 INFO L226 Difference]: Without dead ends: 22329 [2022-07-22 19:39:54,710 INFO L412 NwaCegarLoop]: 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 [2022-07-22 19:39:54,711 INFO L413 NwaCegarLoop]: 4159 mSDtfsCounter, 4056 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4056 SdHoareTripleChecker+Valid, 4318 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 [2022-07-22 19:39:54,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4056 Valid, 4318 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:39:54,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22329 states. [2022-07-22 19:39:55,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22329 to 22119. [2022-07-22 19:39:55,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22119 states, 18858 states have (on average 1.4761374482978047) internal successors, (27837), 19089 states have internal predecessors, (27837), 1869 states have call successors, (1869), 1198 states have call predecessors, (1869), 1390 states have return successors, (3038), 1863 states have call predecessors, (3038), 1869 states have call successors, (3038) [2022-07-22 19:39:55,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22119 states to 22119 states and 32744 transitions. [2022-07-22 19:39:55,524 INFO L78 Accepts]: Start accepts. Automaton has 22119 states and 32744 transitions. Word has length 142 [2022-07-22 19:39:55,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:39:55,525 INFO L495 AbstractCegarLoop]: Abstraction has 22119 states and 32744 transitions. [2022-07-22 19:39:55,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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) [2022-07-22 19:39:55,526 INFO L276 IsEmpty]: Start isEmpty. Operand 22119 states and 32744 transitions. [2022-07-22 19:39:55,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-22 19:39:55,585 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:39:55,585 INFO L195 NwaCegarLoop]: 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, 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] [2022-07-22 19:39:55,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 19:39:55,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:39:55,810 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:39:55,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:39:55,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2072719309, now seen corresponding path program 1 times [2022-07-22 19:39:55,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:39:55,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279072096] [2022-07-22 19:39:55,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:55,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:39:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:55,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:39:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:55,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:39:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:55,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:39:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:55,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:39:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:55,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:39:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:55,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 19:39:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:55,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 19:39:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:55,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:39:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:55,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 19:39:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:55,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:39:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:55,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-22 19:39:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:55,913 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-22 19:39:55,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:39:55,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279072096] [2022-07-22 19:39:55,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279072096] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:39:55,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528985141] [2022-07-22 19:39:55,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:55,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:39:55,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:39:55,916 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) [2022-07-22 19:39:55,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 19:39:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:56,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:39:56,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:39:56,113 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 19:39:56,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:39:56,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528985141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:39:56,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:39:56,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 19:39:56,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978697095] [2022-07-22 19:39:56,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:39:56,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:39:56,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:39:56,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:39:56,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:39:56,116 INFO L87 Difference]: Start difference. First operand 22119 states and 32744 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 19:39:56,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:39:56,830 INFO L93 Difference]: Finished difference Result 44457 states and 65784 transitions. [2022-07-22 19:39:56,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:39:56,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 159 [2022-07-22 19:39:56,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:39:56,913 INFO L225 Difference]: With dead ends: 44457 [2022-07-22 19:39:56,913 INFO L226 Difference]: Without dead ends: 24473 [2022-07-22 19:39:56,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:39:56,968 INFO L413 NwaCegarLoop]: 4137 mSDtfsCounter, 4075 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4075 SdHoareTripleChecker+Valid, 4171 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:39:56,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4075 Valid, 4171 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:39:56,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24473 states. [2022-07-22 19:39:57,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24473 to 24473. [2022-07-22 19:39:57,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24473 states, 21000 states have (on average 1.4191904761904761) internal successors, (29803), 21231 states have internal predecessors, (29803), 1923 states have call successors, (1923), 1356 states have call predecessors, (1923), 1548 states have return successors, (3106), 1917 states have call predecessors, (3106), 1923 states have call successors, (3106) [2022-07-22 19:39:57,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24473 states to 24473 states and 34832 transitions. [2022-07-22 19:39:57,828 INFO L78 Accepts]: Start accepts. Automaton has 24473 states and 34832 transitions. Word has length 159 [2022-07-22 19:39:57,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:39:57,828 INFO L495 AbstractCegarLoop]: Abstraction has 24473 states and 34832 transitions. [2022-07-22 19:39:57,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 19:39:57,829 INFO L276 IsEmpty]: Start isEmpty. Operand 24473 states and 34832 transitions. [2022-07-22 19:39:57,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-22 19:39:57,888 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:39:57,888 INFO L195 NwaCegarLoop]: 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:39:57,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 19:39:58,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:39:58,100 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:39:58,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:39:58,100 INFO L85 PathProgramCache]: Analyzing trace with hash -830749066, now seen corresponding path program 1 times [2022-07-22 19:39:58,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:39:58,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955976808] [2022-07-22 19:39:58,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:58,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:39:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:58,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:39:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:58,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:39:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:58,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:39:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:58,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:39:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:58,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:39:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:58,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 19:39:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:58,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 19:39:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:58,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:39:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:58,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 19:39:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:58,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:39:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:58,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-22 19:39:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-22 19:39:58,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:39:58,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955976808] [2022-07-22 19:39:58,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955976808] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:39:58,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561984473] [2022-07-22 19:39:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:58,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:39:58,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:39:58,214 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) [2022-07-22 19:39:58,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 19:39:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:58,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 19:39:58,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:39:58,372 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-22 19:39:58,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:39:58,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561984473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:39:58,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:39:58,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 19:39:58,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683010361] [2022-07-22 19:39:58,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:39:58,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:39:58,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:39:58,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:39:58,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:39:58,376 INFO L87 Difference]: Start difference. First operand 24473 states and 34832 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 19:39:59,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:39:59,418 INFO L93 Difference]: Finished difference Result 41324 states and 58008 transitions. [2022-07-22 19:39:59,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:39:59,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 159 [2022-07-22 19:39:59,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:39:59,527 INFO L225 Difference]: With dead ends: 41324 [2022-07-22 19:39:59,527 INFO L226 Difference]: Without dead ends: 26013 [2022-07-22 19:39:59,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:39:59,576 INFO L413 NwaCegarLoop]: 4159 mSDtfsCounter, 4088 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:39:59,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 4325 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:39:59,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26013 states. [2022-07-22 19:40:00,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26013 to 25873. [2022-07-22 19:40:00,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25873 states, 22288 states have (on average 1.3940685570710696) internal successors, (31071), 22519 states have internal predecessors, (31071), 1943 states have call successors, (1943), 1448 states have call predecessors, (1943), 1640 states have return successors, (3218), 1937 states have call predecessors, (3218), 1943 states have call successors, (3218) [2022-07-22 19:40:00,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25873 states to 25873 states and 36232 transitions. [2022-07-22 19:40:00,931 INFO L78 Accepts]: Start accepts. Automaton has 25873 states and 36232 transitions. Word has length 159 [2022-07-22 19:40:00,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:40:00,932 INFO L495 AbstractCegarLoop]: Abstraction has 25873 states and 36232 transitions. [2022-07-22 19:40:00,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 19:40:00,932 INFO L276 IsEmpty]: Start isEmpty. Operand 25873 states and 36232 transitions. [2022-07-22 19:40:00,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-22 19:40:00,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:00,981 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:40:01,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 19:40:01,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 19:40:01,208 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:01,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:01,208 INFO L85 PathProgramCache]: Analyzing trace with hash -609804947, now seen corresponding path program 1 times [2022-07-22 19:40:01,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:01,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213616019] [2022-07-22 19:40:01,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:01,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:01,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:01,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:40:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:01,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:40:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:01,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:40:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:01,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:40:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:01,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 19:40:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:01,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 19:40:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:01,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:40:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:01,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 19:40:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:01,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:40:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:01,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 19:40:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:01,339 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-22 19:40:01,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:01,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213616019] [2022-07-22 19:40:01,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213616019] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:40:01,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053782485] [2022-07-22 19:40:01,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:01,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:40:01,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:40:01,341 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:40:01,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 19:40:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:01,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 19:40:01,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:40:01,513 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 19:40:01,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:40:01,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053782485] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:01,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:40:01,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 19:40:01,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62039723] [2022-07-22 19:40:01,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:01,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:40:01,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:01,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:40:01,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:40:01,517 INFO L87 Difference]: Start difference. First operand 25873 states and 36232 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 19:40:02,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:40:02,751 INFO L93 Difference]: Finished difference Result 70245 states and 97750 transitions. [2022-07-22 19:40:02,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:40:02,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-07-22 19:40:02,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:40:02,919 INFO L225 Difference]: With dead ends: 70245 [2022-07-22 19:40:02,919 INFO L226 Difference]: Without dead ends: 46511 [2022-07-22 19:40:02,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:40:02,981 INFO L413 NwaCegarLoop]: 4172 mSDtfsCounter, 4102 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4102 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:40:02,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4102 Valid, 4334 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:40:03,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46511 states. [2022-07-22 19:40:04,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46511 to 45781. [2022-07-22 19:40:04,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45781 states, 39030 states have (on average 1.3636945939021266) internal successors, (53225), 39491 states have internal predecessors, (53225), 3677 states have call successors, (3677), 2688 states have call predecessors, (3677), 3072 states have return successors, (7178), 3665 states have call predecessors, (7178), 3677 states have call successors, (7178) [2022-07-22 19:40:04,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45781 states to 45781 states and 64080 transitions. [2022-07-22 19:40:04,986 INFO L78 Accepts]: Start accepts. Automaton has 45781 states and 64080 transitions. Word has length 160 [2022-07-22 19:40:04,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:40:04,987 INFO L495 AbstractCegarLoop]: Abstraction has 45781 states and 64080 transitions. [2022-07-22 19:40:04,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 19:40:04,987 INFO L276 IsEmpty]: Start isEmpty. Operand 45781 states and 64080 transitions. [2022-07-22 19:40:05,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-22 19:40:05,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:05,095 INFO L195 NwaCegarLoop]: 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, 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] [2022-07-22 19:40:05,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-22 19:40:05,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:40:05,312 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:05,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:05,312 INFO L85 PathProgramCache]: Analyzing trace with hash -757749610, now seen corresponding path program 1 times [2022-07-22 19:40:05,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:05,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948288909] [2022-07-22 19:40:05,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:05,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:05,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:05,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:40:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:05,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:40:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:05,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:40:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:05,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:40:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:05,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 19:40:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:05,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 19:40:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:05,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:40:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:05,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 19:40:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:05,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:40:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:05,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 19:40:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:05,422 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-22 19:40:05,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:05,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948288909] [2022-07-22 19:40:05,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948288909] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:40:05,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827494515] [2022-07-22 19:40:05,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:05,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:40:05,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:40:05,424 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:40:05,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 19:40:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:05,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:40:05,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:40:05,617 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 19:40:05,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:40:05,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827494515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:05,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:40:05,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 19:40:05,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487033883] [2022-07-22 19:40:05,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:05,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:40:05,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:05,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:40:05,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:40:05,620 INFO L87 Difference]: Start difference. First operand 45781 states and 64080 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 19:40:07,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:40:07,263 INFO L93 Difference]: Finished difference Result 75161 states and 105873 transitions. [2022-07-22 19:40:07,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:40:07,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 160 [2022-07-22 19:40:07,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:40:07,372 INFO L225 Difference]: With dead ends: 75161 [2022-07-22 19:40:07,373 INFO L226 Difference]: Without dead ends: 40527 [2022-07-22 19:40:07,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:40:07,439 INFO L413 NwaCegarLoop]: 4136 mSDtfsCounter, 4089 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4089 SdHoareTripleChecker+Valid, 4169 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:40:07,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4089 Valid, 4169 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:40:07,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40527 states. [2022-07-22 19:40:09,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40527 to 29943. [2022-07-22 19:40:09,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29943 states, 25784 states have (on average 1.3390862550418865) internal successors, (34527), 26025 states have internal predecessors, (34527), 2245 states have call successors, (2245), 1720 states have call predecessors, (2245), 1912 states have return successors, (3934), 2229 states have call predecessors, (3934), 2245 states have call successors, (3934) [2022-07-22 19:40:09,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29943 states to 29943 states and 40706 transitions. [2022-07-22 19:40:09,217 INFO L78 Accepts]: Start accepts. Automaton has 29943 states and 40706 transitions. Word has length 160 [2022-07-22 19:40:09,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:40:09,217 INFO L495 AbstractCegarLoop]: Abstraction has 29943 states and 40706 transitions. [2022-07-22 19:40:09,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 19:40:09,218 INFO L276 IsEmpty]: Start isEmpty. Operand 29943 states and 40706 transitions. [2022-07-22 19:40:09,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-22 19:40:09,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:09,253 INFO L195 NwaCegarLoop]: 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, 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] [2022-07-22 19:40:09,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 19:40:09,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:40:09,468 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:09,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:09,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1793650834, now seen corresponding path program 1 times [2022-07-22 19:40:09,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:09,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048126941] [2022-07-22 19:40:09,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:09,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:09,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:09,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:40:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:09,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:40:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:09,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:40:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:09,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:40:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:09,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 19:40:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:09,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 19:40:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:09,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:40:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:09,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 19:40:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:09,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:40:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:09,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 19:40:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:09,563 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-22 19:40:09,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:09,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048126941] [2022-07-22 19:40:09,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048126941] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:40:09,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050852819] [2022-07-22 19:40:09,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:09,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:40:09,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:40:09,565 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:40:09,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 19:40:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:09,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 19:40:09,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:40:09,721 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-22 19:40:09,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:40:09,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050852819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:09,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:40:09,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 19:40:09,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877692081] [2022-07-22 19:40:09,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:09,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:40:09,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:09,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:40:09,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:40:09,723 INFO L87 Difference]: Start difference. First operand 29943 states and 40706 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 19:40:11,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:40:11,680 INFO L93 Difference]: Finished difference Result 82801 states and 112154 transitions. [2022-07-22 19:40:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:40:11,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-07-22 19:40:11,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:40:11,833 INFO L225 Difference]: With dead ends: 82801 [2022-07-22 19:40:11,833 INFO L226 Difference]: Without dead ends: 55005 [2022-07-22 19:40:11,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:40:11,881 INFO L413 NwaCegarLoop]: 4180 mSDtfsCounter, 4098 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4341 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:40:11,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4341 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:40:11,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55005 states. [2022-07-22 19:40:14,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55005 to 53491. [2022-07-22 19:40:14,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53491 states, 45624 states have (on average 1.3054751884972822) internal successors, (59561), 46105 states have internal predecessors, (59561), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 3600 states have return successors, (8740), 4233 states have call predecessors, (8740), 4265 states have call successors, (8740) [2022-07-22 19:40:14,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53491 states to 53491 states and 72566 transitions. [2022-07-22 19:40:14,421 INFO L78 Accepts]: Start accepts. Automaton has 53491 states and 72566 transitions. Word has length 160 [2022-07-22 19:40:14,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:40:14,421 INFO L495 AbstractCegarLoop]: Abstraction has 53491 states and 72566 transitions. [2022-07-22 19:40:14,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 19:40:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 53491 states and 72566 transitions. [2022-07-22 19:40:14,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-22 19:40:14,498 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:14,498 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:40:14,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-22 19:40:14,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 19:40:14,699 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:14,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:14,699 INFO L85 PathProgramCache]: Analyzing trace with hash -392345557, now seen corresponding path program 1 times [2022-07-22 19:40:14,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:14,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038666155] [2022-07-22 19:40:14,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:14,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:14,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:14,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:40:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:14,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:40:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:14,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:40:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:14,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:40:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:14,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 19:40:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:14,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 19:40:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:40:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:14,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 19:40:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:14,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:40:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:14,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 19:40:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:14,771 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-22 19:40:14,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:14,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038666155] [2022-07-22 19:40:14,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038666155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:14,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:40:14,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 19:40:14,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026565773] [2022-07-22 19:40:14,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:14,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 19:40:14,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:14,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 19:40:14,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 19:40:14,773 INFO L87 Difference]: Start difference. First operand 53491 states and 72566 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 19:40:17,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:40:17,036 INFO L93 Difference]: Finished difference Result 102539 states and 136687 transitions. [2022-07-22 19:40:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 19:40:17,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 160 [2022-07-22 19:40:17,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:40:17,196 INFO L225 Difference]: With dead ends: 102539 [2022-07-22 19:40:17,196 INFO L226 Difference]: Without dead ends: 51193 [2022-07-22 19:40:17,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:40:17,290 INFO L413 NwaCegarLoop]: 4136 mSDtfsCounter, 282 mSDsluCounter, 12001 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 16137 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 19:40:17,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 16137 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 19:40:17,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51193 states. [2022-07-22 19:40:19,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51193 to 48475. [2022-07-22 19:40:19,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48475 states, 41692 states have (on average 1.3054542837954524) internal successors, (54427), 42585 states have internal predecessors, (54427), 3253 states have call successors, (3253), 2472 states have call predecessors, (3253), 3528 states have return successors, (7133), 3449 states have call predecessors, (7133), 3253 states have call successors, (7133) [2022-07-22 19:40:19,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48475 states to 48475 states and 64813 transitions. [2022-07-22 19:40:19,737 INFO L78 Accepts]: Start accepts. Automaton has 48475 states and 64813 transitions. Word has length 160 [2022-07-22 19:40:19,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:40:19,738 INFO L495 AbstractCegarLoop]: Abstraction has 48475 states and 64813 transitions. [2022-07-22 19:40:19,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 19:40:19,738 INFO L276 IsEmpty]: Start isEmpty. Operand 48475 states and 64813 transitions. [2022-07-22 19:40:19,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-22 19:40:19,806 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:19,807 INFO L195 NwaCegarLoop]: 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, 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] [2022-07-22 19:40:19,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 19:40:19,807 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:19,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:19,808 INFO L85 PathProgramCache]: Analyzing trace with hash -809968940, now seen corresponding path program 1 times [2022-07-22 19:40:19,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:19,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719644141] [2022-07-22 19:40:19,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:19,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:19,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:19,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:40:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:19,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:40:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:19,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:40:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:19,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:40:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:19,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 19:40:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:19,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 19:40:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:19,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:40:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:19,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 19:40:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:19,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:40:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:19,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 19:40:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:19,877 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-22 19:40:19,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:19,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719644141] [2022-07-22 19:40:19,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719644141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:19,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:40:19,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 19:40:19,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506986560] [2022-07-22 19:40:19,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:19,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 19:40:19,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:19,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 19:40:19,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 19:40:19,880 INFO L87 Difference]: Start difference. First operand 48475 states and 64813 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 19:40:21,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:40:21,731 INFO L93 Difference]: Finished difference Result 86015 states and 113686 transitions. [2022-07-22 19:40:21,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 19:40:21,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 160 [2022-07-22 19:40:21,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:40:21,845 INFO L225 Difference]: With dead ends: 86015 [2022-07-22 19:40:21,845 INFO L226 Difference]: Without dead ends: 39677 [2022-07-22 19:40:21,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:40:21,911 INFO L413 NwaCegarLoop]: 4135 mSDtfsCounter, 282 mSDsluCounter, 12000 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 16135 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 19:40:21,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 16135 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 19:40:22,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39677 states. [2022-07-22 19:40:23,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39677 to 37027. [2022-07-22 19:40:23,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37027 states, 31990 states have (on average 1.3210690840887778) internal successors, (42261), 32627 states have internal predecessors, (42261), 2427 states have call successors, (2427), 1856 states have call predecessors, (2427), 2608 states have return successors, (4967), 2559 states have call predecessors, (4967), 2427 states have call successors, (4967) [2022-07-22 19:40:23,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37027 states to 37027 states and 49655 transitions. [2022-07-22 19:40:23,900 INFO L78 Accepts]: Start accepts. Automaton has 37027 states and 49655 transitions. Word has length 160 [2022-07-22 19:40:23,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:40:23,900 INFO L495 AbstractCegarLoop]: Abstraction has 37027 states and 49655 transitions. [2022-07-22 19:40:23,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 19:40:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand 37027 states and 49655 transitions. [2022-07-22 19:40:23,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-22 19:40:23,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:40:23,947 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:40:23,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 19:40:23,947 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:40:23,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:40:23,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1498858591, now seen corresponding path program 1 times [2022-07-22 19:40:23,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:40:23,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578903724] [2022-07-22 19:40:23,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:23,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:40:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:23,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:40:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:23,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 19:40:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:23,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:40:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:24,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:40:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:24,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:40:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:24,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 19:40:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:24,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 19:40:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:24,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:40:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:24,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 19:40:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:24,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:40:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:24,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 19:40:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:24,031 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-22 19:40:24,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:40:24,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578903724] [2022-07-22 19:40:24,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578903724] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:40:24,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134864984] [2022-07-22 19:40:24,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:40:24,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:40:24,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:40:24,033 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:40:24,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 19:40:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:40:24,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 19:40:24,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:40:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 19:40:24,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:40:24,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134864984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:40:24,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:40:24,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 19:40:24,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720850073] [2022-07-22 19:40:24,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:40:24,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:40:24,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:40:24,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:40:24,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:40:24,173 INFO L87 Difference]: Start difference. First operand 37027 states and 49655 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 19:40:25,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:40:25,626 INFO L93 Difference]: Finished difference Result 60935 states and 83299 transitions. [2022-07-22 19:40:25,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:40:25,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 162 [2022-07-22 19:40:25,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:40:25,724 INFO L225 Difference]: With dead ends: 60935 [2022-07-22 19:40:25,724 INFO L226 Difference]: Without dead ends: 37197 [2022-07-22 19:40:25,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:40:25,770 INFO L413 NwaCegarLoop]: 4267 mSDtfsCounter, 130 mSDsluCounter, 4115 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 8382 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:40:25,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 8382 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:40:25,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37197 states.