./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.08.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 b5a8b3103e2d9faed499388786efbacaa303edd9c4d157d09b07735fe300c357 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:52:22,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:52:22,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:52:22,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:52:22,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:52:22,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:52:22,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:52:22,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:52:22,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:52:22,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:52:22,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:52:22,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:52:22,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:52:22,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:52:22,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:52:22,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:52:22,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:52:22,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:52:22,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:52:22,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:52:22,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:52:22,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:52:22,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:52:22,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:52:22,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:52:22,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:52:22,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:52:22,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:52:22,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:52:22,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:52:22,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:52:22,193 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:52:22,194 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:52:22,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:52:22,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:52:22,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:52:22,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:52:22,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:52:22,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:52:22,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:52:22,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:52:22,198 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:52:22,224 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:52:22,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:52:22,224 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:52:22,224 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:52:22,225 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:52:22,225 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:52:22,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:52:22,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:52:22,226 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:52:22,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:52:22,227 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:52:22,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:52:22,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:52:22,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:52:22,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:52:22,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:52:22,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:52:22,228 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:52:22,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:52:22,228 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:52:22,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:52:22,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:52:22,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:52:22,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:52:22,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:52:22,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:52:22,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:52:22,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:52:22,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:52:22,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:52:22,231 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:52:22,231 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:52:22,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:52:22,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:52:22,231 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5a8b3103e2d9faed499388786efbacaa303edd9c4d157d09b07735fe300c357 [2021-12-16 01:52:22,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:52:22,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:52:22,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:52:22,456 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:52:22,457 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:52:22,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label41+token_ring.08.cil-1.c [2021-12-16 01:52:22,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a9d338e7/d12f9041f349414a90d39ec777affa08/FLAGe2a4be747 [2021-12-16 01:52:23,170 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:52:23,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.08.cil-1.c [2021-12-16 01:52:23,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a9d338e7/d12f9041f349414a90d39ec777affa08/FLAGe2a4be747 [2021-12-16 01:52:23,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a9d338e7/d12f9041f349414a90d39ec777affa08 [2021-12-16 01:52:23,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:52:23,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:52:23,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:52:23,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:52:23,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:52:23,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:52:23" (1/1) ... [2021-12-16 01:52:23,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@644eed4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:23, skipping insertion in model container [2021-12-16 01:52:23,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:52:23" (1/1) ... [2021-12-16 01:52:23,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:52:23,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:52:24,923 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_label41+token_ring.08.cil-1.c[376251,376264] [2021-12-16 01:52:24,950 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_label41+token_ring.08.cil-1.c[383339,383352] [2021-12-16 01:52:25,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:52:25,137 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:52:25,739 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_label41+token_ring.08.cil-1.c[376251,376264] [2021-12-16 01:52:25,747 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_label41+token_ring.08.cil-1.c[383339,383352] [2021-12-16 01:52:25,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:52:25,809 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:52:25,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:25 WrapperNode [2021-12-16 01:52:25,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:52:25,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:52:25,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:52:25,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:52:25,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:25" (1/1) ... [2021-12-16 01:52:25,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:25" (1/1) ... [2021-12-16 01:52:26,148 INFO L137 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 12967 [2021-12-16 01:52:26,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:52:26,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:52:26,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:52:26,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:52:26,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:25" (1/1) ... [2021-12-16 01:52:26,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:25" (1/1) ... [2021-12-16 01:52:26,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:25" (1/1) ... [2021-12-16 01:52:26,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:25" (1/1) ... [2021-12-16 01:52:26,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:25" (1/1) ... [2021-12-16 01:52:26,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:25" (1/1) ... [2021-12-16 01:52:26,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:25" (1/1) ... [2021-12-16 01:52:26,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:52:26,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:52:26,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:52:26,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:52:26,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:25" (1/1) ... [2021-12-16 01:52:26,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:52:26,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:52:26,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 01:52:26,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 01:52:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:52:26,839 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-16 01:52:26,839 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-16 01:52:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-16 01:52:26,840 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-16 01:52:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-16 01:52:26,840 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-16 01:52:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-16 01:52:26,840 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-16 01:52:26,840 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-16 01:52:26,840 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-16 01:52:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-16 01:52:26,841 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-16 01:52:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:52:26,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:52:26,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:52:26,999 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:52:27,000 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:52:31,580 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:52:31,601 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:52:31,601 INFO L301 CfgBuilder]: Removed 12 assume(true) statements. [2021-12-16 01:52:31,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:52:31 BoogieIcfgContainer [2021-12-16 01:52:31,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:52:31,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:52:31,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:52:31,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:52:31,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:52:23" (1/3) ... [2021-12-16 01:52:31,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c11df02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:52:31, skipping insertion in model container [2021-12-16 01:52:31,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:52:25" (2/3) ... [2021-12-16 01:52:31,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c11df02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:52:31, skipping insertion in model container [2021-12-16 01:52:31,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:52:31" (3/3) ... [2021-12-16 01:52:31,611 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.08.cil-1.c [2021-12-16 01:52:31,614 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:52:31,615 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 01:52:31,652 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:52:31,656 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 01:52:31,656 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 01:52:31,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-16 01:52:31,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 01:52:31,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:52:31,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:52:31,703 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:52:31,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:52:31,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1316356206, now seen corresponding path program 1 times [2021-12-16 01:52:31,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:52:31,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503129821] [2021-12-16 01:52:31,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:52:31,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:52:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:31,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:52:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:31,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 01:52:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:31,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 01:52:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:32,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 01:52:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:32,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 01:52:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:32,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:52:32,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:52:32,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503129821] [2021-12-16 01:52:32,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503129821] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:52:32,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:52:32,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:52:32,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87098525] [2021-12-16 01:52:32,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:52:32,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:52:32,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:52:32,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:52:32,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:52:32,118 INFO L87 Difference]: Start difference. First operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:32,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:52:32,972 INFO L93 Difference]: Finished difference Result 5022 states and 9244 transitions. [2021-12-16 01:52:32,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 01:52:32,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-16 01:52:32,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:52:32,992 INFO L225 Difference]: With dead ends: 5022 [2021-12-16 01:52:32,992 INFO L226 Difference]: Without dead ends: 2496 [2021-12-16 01:52:32,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:52:33,001 INFO L933 BasicCegarLoop]: 4499 mSDtfsCounter, 734 mSDsluCounter, 12377 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 16876 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:52:33,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 16876 Invalid, 547 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 01:52:33,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-12-16 01:52:33,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2398. [2021-12-16 01:52:33,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2368 states have (on average 1.8344594594594594) internal successors, (4344), 2370 states have internal predecessors, (4344), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-16 01:52:33,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4388 transitions. [2021-12-16 01:52:33,099 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4388 transitions. Word has length 134 [2021-12-16 01:52:33,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:52:33,099 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 4388 transitions. [2021-12-16 01:52:33,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:33,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4388 transitions. [2021-12-16 01:52:33,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 01:52:33,103 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:52:33,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:52:33,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 01:52:33,104 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:52:33,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:52:33,105 INFO L85 PathProgramCache]: Analyzing trace with hash 2022952812, now seen corresponding path program 1 times [2021-12-16 01:52:33,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:52:33,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290955247] [2021-12-16 01:52:33,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:52:33,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:52:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:33,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:52:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:33,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 01:52:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:33,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 01:52:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:33,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 01:52:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:33,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 01:52:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:52:33,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:52:33,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290955247] [2021-12-16 01:52:33,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290955247] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:52:33,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:52:33,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 01:52:33,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191259673] [2021-12-16 01:52:33,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:52:33,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 01:52:33,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:52:33,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 01:52:33,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:52:33,240 INFO L87 Difference]: Start difference. First operand 2398 states and 4388 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:34,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:52:34,874 INFO L93 Difference]: Finished difference Result 3126 states and 5555 transitions. [2021-12-16 01:52:34,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 01:52:34,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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 134 [2021-12-16 01:52:34,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:52:34,884 INFO L225 Difference]: With dead ends: 3126 [2021-12-16 01:52:34,885 INFO L226 Difference]: Without dead ends: 2865 [2021-12-16 01:52:34,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:52:34,887 INFO L933 BasicCegarLoop]: 4466 mSDtfsCounter, 5050 mSDsluCounter, 12616 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5065 SdHoareTripleChecker+Valid, 17082 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:52:34,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5065 Valid, 17082 Invalid, 1481 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [100 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 01:52:34,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2021-12-16 01:52:34,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2670. [2021-12-16 01:52:34,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2616 states have (on average 1.8103975535168195) internal successors, (4736), 2619 states have internal predecessors, (4736), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2021-12-16 01:52:34,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4817 transitions. [2021-12-16 01:52:34,950 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4817 transitions. Word has length 134 [2021-12-16 01:52:34,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:52:34,951 INFO L470 AbstractCegarLoop]: Abstraction has 2670 states and 4817 transitions. [2021-12-16 01:52:34,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:34,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4817 transitions. [2021-12-16 01:52:34,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 01:52:34,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:52:34,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:52:34,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 01:52:34,954 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:52:34,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:52:34,954 INFO L85 PathProgramCache]: Analyzing trace with hash 316449264, now seen corresponding path program 1 times [2021-12-16 01:52:34,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:52:34,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984453353] [2021-12-16 01:52:34,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:52:34,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:52:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:34,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:52:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:35,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 01:52:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:35,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 01:52:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:35,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 01:52:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:35,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 01:52:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:52:35,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:52:35,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984453353] [2021-12-16 01:52:35,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984453353] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:52:35,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:52:35,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:52:35,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225951266] [2021-12-16 01:52:35,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:52:35,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:52:35,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:52:35,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:52:35,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:52:35,086 INFO L87 Difference]: Start difference. First operand 2670 states and 4817 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:37,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:52:37,074 INFO L93 Difference]: Finished difference Result 3779 states and 6593 transitions. [2021-12-16 01:52:37,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:52:37,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-16 01:52:37,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:52:37,091 INFO L225 Difference]: With dead ends: 3779 [2021-12-16 01:52:37,091 INFO L226 Difference]: Without dead ends: 3246 [2021-12-16 01:52:37,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:52:37,096 INFO L933 BasicCegarLoop]: 4677 mSDtfsCounter, 5064 mSDsluCounter, 17247 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5079 SdHoareTripleChecker+Valid, 21924 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:52:37,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5079 Valid, 21924 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-16 01:52:37,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2021-12-16 01:52:37,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2923. [2021-12-16 01:52:37,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2845 states have (on average 1.789103690685413) internal successors, (5090), 2849 states have internal predecessors, (5090), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2021-12-16 01:52:37,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 5207 transitions. [2021-12-16 01:52:37,175 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 5207 transitions. Word has length 134 [2021-12-16 01:52:37,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:52:37,176 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 5207 transitions. [2021-12-16 01:52:37,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:37,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 5207 transitions. [2021-12-16 01:52:37,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 01:52:37,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:52:37,179 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:52:37,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 01:52:37,179 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:52:37,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:52:37,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1976631762, now seen corresponding path program 1 times [2021-12-16 01:52:37,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:52:37,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852517925] [2021-12-16 01:52:37,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:52:37,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:52:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:37,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:52:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:37,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 01:52:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:37,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 01:52:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:37,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 01:52:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:37,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 01:52:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:52:37,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:52:37,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852517925] [2021-12-16 01:52:37,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852517925] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:52:37,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:52:37,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:52:37,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737986290] [2021-12-16 01:52:37,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:52:37,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:52:37,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:52:37,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:52:37,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:52:37,307 INFO L87 Difference]: Start difference. First operand 2923 states and 5207 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:39,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:52:39,170 INFO L93 Difference]: Finished difference Result 4741 states and 8111 transitions. [2021-12-16 01:52:39,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:52:39,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-16 01:52:39,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:52:39,184 INFO L225 Difference]: With dead ends: 4741 [2021-12-16 01:52:39,185 INFO L226 Difference]: Without dead ends: 3955 [2021-12-16 01:52:39,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:52:39,189 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 5141 mSDsluCounter, 16786 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5156 SdHoareTripleChecker+Valid, 21280 SdHoareTripleChecker+Invalid, 2026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 01:52:39,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5156 Valid, 21280 Invalid, 2026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 01:52:39,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2021-12-16 01:52:39,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3430. [2021-12-16 01:52:39,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3430 states, 3304 states have (on average 1.7551452784503632) internal successors, (5799), 3310 states have internal predecessors, (5799), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-12-16 01:52:39,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 5992 transitions. [2021-12-16 01:52:39,287 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 5992 transitions. Word has length 134 [2021-12-16 01:52:39,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:52:39,287 INFO L470 AbstractCegarLoop]: Abstraction has 3430 states and 5992 transitions. [2021-12-16 01:52:39,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:39,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 5992 transitions. [2021-12-16 01:52:39,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 01:52:39,294 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:52:39,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:52:39,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 01:52:39,296 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:52:39,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:52:39,296 INFO L85 PathProgramCache]: Analyzing trace with hash -249486800, now seen corresponding path program 1 times [2021-12-16 01:52:39,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:52:39,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431929864] [2021-12-16 01:52:39,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:52:39,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:52:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:39,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:52:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:39,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 01:52:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:39,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 01:52:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:39,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 01:52:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:39,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 01:52:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:39,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:52:39,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:52:39,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431929864] [2021-12-16 01:52:39,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431929864] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:52:39,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:52:39,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:52:39,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260969185] [2021-12-16 01:52:39,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:52:39,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:52:39,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:52:39,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:52:39,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:52:39,405 INFO L87 Difference]: Start difference. First operand 3430 states and 5992 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:41,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:52:41,337 INFO L93 Difference]: Finished difference Result 6592 states and 11016 transitions. [2021-12-16 01:52:41,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:52:41,337 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-16 01:52:41,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:52:41,356 INFO L225 Difference]: With dead ends: 6592 [2021-12-16 01:52:41,356 INFO L226 Difference]: Without dead ends: 5299 [2021-12-16 01:52:41,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:52:41,363 INFO L933 BasicCegarLoop]: 4665 mSDtfsCounter, 5059 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2167 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5074 SdHoareTripleChecker+Valid, 21908 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 01:52:41,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5074 Valid, 21908 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2167 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 01:52:41,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5299 states. [2021-12-16 01:52:41,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5299 to 4445. [2021-12-16 01:52:41,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4445 states, 4223 states have (on average 1.7089746625621596) internal successors, (7217), 4233 states have internal predecessors, (7217), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2021-12-16 01:52:41,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4445 states to 4445 states and 7568 transitions. [2021-12-16 01:52:41,491 INFO L78 Accepts]: Start accepts. Automaton has 4445 states and 7568 transitions. Word has length 134 [2021-12-16 01:52:41,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:52:41,492 INFO L470 AbstractCegarLoop]: Abstraction has 4445 states and 7568 transitions. [2021-12-16 01:52:41,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:41,493 INFO L276 IsEmpty]: Start isEmpty. Operand 4445 states and 7568 transitions. [2021-12-16 01:52:41,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 01:52:41,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:52:41,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:52:41,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 01:52:41,495 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:52:41,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:52:41,496 INFO L85 PathProgramCache]: Analyzing trace with hash 221869550, now seen corresponding path program 1 times [2021-12-16 01:52:41,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:52:41,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495541675] [2021-12-16 01:52:41,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:52:41,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:52:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:41,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:52:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:41,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 01:52:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:41,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 01:52:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:41,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 01:52:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:41,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 01:52:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:41,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:52:41,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:52:41,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495541675] [2021-12-16 01:52:41,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495541675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:52:41,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:52:41,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:52:41,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518971692] [2021-12-16 01:52:41,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:52:41,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:52:41,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:52:41,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:52:41,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:52:41,602 INFO L87 Difference]: Start difference. First operand 4445 states and 7568 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:43,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:52:43,717 INFO L93 Difference]: Finished difference Result 10286 states and 16830 transitions. [2021-12-16 01:52:43,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:52:43,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-16 01:52:43,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:52:43,749 INFO L225 Difference]: With dead ends: 10286 [2021-12-16 01:52:43,749 INFO L226 Difference]: Without dead ends: 7978 [2021-12-16 01:52:43,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:52:43,762 INFO L933 BasicCegarLoop]: 4657 mSDtfsCounter, 5054 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5069 SdHoareTripleChecker+Valid, 21900 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 01:52:43,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5069 Valid, 21900 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 01:52:43,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7978 states. [2021-12-16 01:52:43,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7978 to 6489. [2021-12-16 01:52:43,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6489 states, 6075 states have (on average 1.6587654320987655) internal successors, (10077), 6093 states have internal predecessors, (10077), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2021-12-16 01:52:44,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6489 states to 6489 states and 10762 transitions. [2021-12-16 01:52:44,010 INFO L78 Accepts]: Start accepts. Automaton has 6489 states and 10762 transitions. Word has length 134 [2021-12-16 01:52:44,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:52:44,011 INFO L470 AbstractCegarLoop]: Abstraction has 6489 states and 10762 transitions. [2021-12-16 01:52:44,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:44,011 INFO L276 IsEmpty]: Start isEmpty. Operand 6489 states and 10762 transitions. [2021-12-16 01:52:44,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 01:52:44,014 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:52:44,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:52:44,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 01:52:44,015 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:52:44,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:52:44,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1909481172, now seen corresponding path program 1 times [2021-12-16 01:52:44,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:52:44,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593130407] [2021-12-16 01:52:44,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:52:44,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:52:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:44,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:52:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:44,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 01:52:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:44,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 01:52:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:44,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 01:52:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:44,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 01:52:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:52:44,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:52:44,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593130407] [2021-12-16 01:52:44,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593130407] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:52:44,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:52:44,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:52:44,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408630965] [2021-12-16 01:52:44,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:52:44,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:52:44,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:52:44,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:52:44,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:52:44,121 INFO L87 Difference]: Start difference. First operand 6489 states and 10762 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:46,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:52:46,275 INFO L93 Difference]: Finished difference Result 17692 states and 28550 transitions. [2021-12-16 01:52:46,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:52:46,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-16 01:52:46,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:52:46,330 INFO L225 Difference]: With dead ends: 17692 [2021-12-16 01:52:46,330 INFO L226 Difference]: Without dead ends: 13340 [2021-12-16 01:52:46,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:52:46,349 INFO L933 BasicCegarLoop]: 4652 mSDtfsCounter, 5053 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5068 SdHoareTripleChecker+Valid, 21895 SdHoareTripleChecker+Invalid, 2213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 01:52:46,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5068 Valid, 21895 Invalid, 2213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 01:52:46,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13340 states. [2021-12-16 01:52:46,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13340 to 10590. [2021-12-16 01:52:46,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.615093954248366) internal successors, (15815), 9826 states have internal predecessors, (15815), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-16 01:52:46,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17222 transitions. [2021-12-16 01:52:46,687 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17222 transitions. Word has length 134 [2021-12-16 01:52:46,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:52:46,688 INFO L470 AbstractCegarLoop]: Abstraction has 10590 states and 17222 transitions. [2021-12-16 01:52:46,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:46,688 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17222 transitions. [2021-12-16 01:52:46,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 01:52:46,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:52:46,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:52:46,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 01:52:46,694 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:52:46,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:52:46,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1346901550, now seen corresponding path program 1 times [2021-12-16 01:52:46,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:52:46,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603135853] [2021-12-16 01:52:46,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:52:46,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:52:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:46,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:52:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:46,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 01:52:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:46,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 01:52:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:46,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 01:52:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:46,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 01:52:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:52:46,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:52:46,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603135853] [2021-12-16 01:52:46,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603135853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:52:46,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:52:46,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:52:46,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617352698] [2021-12-16 01:52:46,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:52:46,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:52:46,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:52:46,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:52:46,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:52:46,788 INFO L87 Difference]: Start difference. First operand 10590 states and 17222 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:48,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:52:48,111 INFO L93 Difference]: Finished difference Result 21934 states and 35495 transitions. [2021-12-16 01:52:48,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:52:48,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-16 01:52:48,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:52:48,149 INFO L225 Difference]: With dead ends: 21934 [2021-12-16 01:52:48,149 INFO L226 Difference]: Without dead ends: 13481 [2021-12-16 01:52:48,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:52:48,175 INFO L933 BasicCegarLoop]: 4398 mSDtfsCounter, 4752 mSDsluCounter, 16508 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 20906 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:52:48,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4768 Valid, 20906 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:52:48,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13481 states. [2021-12-16 01:52:48,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13481 to 10590. [2021-12-16 01:52:48,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.6117238562091503) internal successors, (15782), 9826 states have internal predecessors, (15782), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-16 01:52:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17189 transitions. [2021-12-16 01:52:48,526 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17189 transitions. Word has length 134 [2021-12-16 01:52:48,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:52:48,527 INFO L470 AbstractCegarLoop]: Abstraction has 10590 states and 17189 transitions. [2021-12-16 01:52:48,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:48,527 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17189 transitions. [2021-12-16 01:52:48,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 01:52:48,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:52:48,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:52:48,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 01:52:48,535 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:52:48,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:52:48,535 INFO L85 PathProgramCache]: Analyzing trace with hash -626263828, now seen corresponding path program 1 times [2021-12-16 01:52:48,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:52:48,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29384808] [2021-12-16 01:52:48,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:52:48,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:52:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:48,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:52:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:48,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 01:52:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:48,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 01:52:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:48,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 01:52:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:48,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 01:52:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:48,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:52:48,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:52:48,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29384808] [2021-12-16 01:52:48,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29384808] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:52:48,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:52:48,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:52:48,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575216117] [2021-12-16 01:52:48,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:52:48,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:52:48,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:52:48,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:52:48,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:52:48,645 INFO L87 Difference]: Start difference. First operand 10590 states and 17189 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:49,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:52:49,828 INFO L93 Difference]: Finished difference Result 21900 states and 35328 transitions. [2021-12-16 01:52:49,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:52:49,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-16 01:52:49,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:52:49,863 INFO L225 Difference]: With dead ends: 21900 [2021-12-16 01:52:49,864 INFO L226 Difference]: Without dead ends: 13447 [2021-12-16 01:52:49,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:52:49,886 INFO L933 BasicCegarLoop]: 4394 mSDtfsCounter, 4868 mSDsluCounter, 12408 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4884 SdHoareTripleChecker+Valid, 16802 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:52:49,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4884 Valid, 16802 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 01:52:49,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13447 states. [2021-12-16 01:52:50,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13447 to 10590. [2021-12-16 01:52:50,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.6083537581699345) internal successors, (15749), 9826 states have internal predecessors, (15749), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-16 01:52:50,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17156 transitions. [2021-12-16 01:52:50,232 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17156 transitions. Word has length 134 [2021-12-16 01:52:50,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:52:50,233 INFO L470 AbstractCegarLoop]: Abstraction has 10590 states and 17156 transitions. [2021-12-16 01:52:50,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:50,233 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17156 transitions. [2021-12-16 01:52:50,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 01:52:50,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:52:50,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:52:50,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 01:52:50,239 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:52:50,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:52:50,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1526842990, now seen corresponding path program 1 times [2021-12-16 01:52:50,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:52:50,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069404152] [2021-12-16 01:52:50,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:52:50,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:52:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:50,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:52:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:50,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 01:52:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:50,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 01:52:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:50,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 01:52:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:50,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 01:52:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:50,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:52:50,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:52:50,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069404152] [2021-12-16 01:52:50,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069404152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:52:50,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:52:50,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:52:50,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252349555] [2021-12-16 01:52:50,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:52:50,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:52:50,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:52:50,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:52:50,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:52:50,342 INFO L87 Difference]: Start difference. First operand 10590 states and 17156 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:51,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:52:51,745 INFO L93 Difference]: Finished difference Result 21866 states and 35161 transitions. [2021-12-16 01:52:51,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:52:51,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-16 01:52:51,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:52:51,783 INFO L225 Difference]: With dead ends: 21866 [2021-12-16 01:52:51,783 INFO L226 Difference]: Without dead ends: 13413 [2021-12-16 01:52:51,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:52:51,801 INFO L933 BasicCegarLoop]: 4390 mSDtfsCounter, 4746 mSDsluCounter, 16506 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4762 SdHoareTripleChecker+Valid, 20896 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:52:51,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4762 Valid, 20896 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 01:52:51,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13413 states. [2021-12-16 01:52:52,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13413 to 10590. [2021-12-16 01:52:52,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.604983660130719) internal successors, (15716), 9826 states have internal predecessors, (15716), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-16 01:52:52,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17123 transitions. [2021-12-16 01:52:52,213 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17123 transitions. Word has length 134 [2021-12-16 01:52:52,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:52:52,213 INFO L470 AbstractCegarLoop]: Abstraction has 10590 states and 17123 transitions. [2021-12-16 01:52:52,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:52,213 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17123 transitions. [2021-12-16 01:52:52,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 01:52:52,219 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:52:52,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:52:52,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 01:52:52,219 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:52:52,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:52:52,220 INFO L85 PathProgramCache]: Analyzing trace with hash 903561388, now seen corresponding path program 1 times [2021-12-16 01:52:52,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:52:52,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102966556] [2021-12-16 01:52:52,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:52:52,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:52:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:52,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:52:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:52,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 01:52:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:52,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 01:52:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:52,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 01:52:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:52,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 01:52:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:52:52,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:52:52,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102966556] [2021-12-16 01:52:52,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102966556] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:52:52,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:52:52,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:52:52,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554526944] [2021-12-16 01:52:52,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:52:52,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:52:52,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:52:52,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:52:52,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:52:52,307 INFO L87 Difference]: Start difference. First operand 10590 states and 17123 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:55,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:52:55,327 INFO L93 Difference]: Finished difference Result 35889 states and 56830 transitions. [2021-12-16 01:52:55,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:52:55,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-16 01:52:55,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:52:55,400 INFO L225 Difference]: With dead ends: 35889 [2021-12-16 01:52:55,401 INFO L226 Difference]: Without dead ends: 27436 [2021-12-16 01:52:55,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:52:55,425 INFO L933 BasicCegarLoop]: 4601 mSDtfsCounter, 5169 mSDsluCounter, 16806 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5183 SdHoareTripleChecker+Valid, 21407 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:52:55,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5183 Valid, 21407 Invalid, 2339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-16 01:52:55,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27436 states. [2021-12-16 01:52:56,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27436 to 18666. [2021-12-16 01:52:56,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18666 states, 17132 states have (on average 1.5715619892598647) internal successors, (26924), 17198 states have internal predecessors, (26924), 1078 states have call successors, (1078), 390 states have call predecessors, (1078), 454 states have return successors, (1871), 1141 states have call predecessors, (1871), 1078 states have call successors, (1871) [2021-12-16 01:52:56,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18666 states to 18666 states and 29873 transitions. [2021-12-16 01:52:56,305 INFO L78 Accepts]: Start accepts. Automaton has 18666 states and 29873 transitions. Word has length 134 [2021-12-16 01:52:56,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:52:56,305 INFO L470 AbstractCegarLoop]: Abstraction has 18666 states and 29873 transitions. [2021-12-16 01:52:56,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:56,305 INFO L276 IsEmpty]: Start isEmpty. Operand 18666 states and 29873 transitions. [2021-12-16 01:52:56,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 01:52:56,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:52:56,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:52:56,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 01:52:56,315 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:52:56,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:52:56,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1022002862, now seen corresponding path program 1 times [2021-12-16 01:52:56,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:52:56,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065189756] [2021-12-16 01:52:56,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:52:56,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:52:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:56,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:52:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:56,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 01:52:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:56,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 01:52:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:56,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 01:52:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:56,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 01:52:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:52:56,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:52:56,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065189756] [2021-12-16 01:52:56,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065189756] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:52:56,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:52:56,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:52:56,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297739852] [2021-12-16 01:52:56,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:52:56,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:52:56,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:52:56,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:52:56,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:52:56,404 INFO L87 Difference]: Start difference. First operand 18666 states and 29873 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:58,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:52:58,234 INFO L93 Difference]: Finished difference Result 40414 states and 64848 transitions. [2021-12-16 01:52:58,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:52:58,235 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-16 01:52:58,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:52:58,288 INFO L225 Difference]: With dead ends: 40414 [2021-12-16 01:52:58,288 INFO L226 Difference]: Without dead ends: 23885 [2021-12-16 01:52:58,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:52:58,311 INFO L933 BasicCegarLoop]: 4381 mSDtfsCounter, 4747 mSDsluCounter, 16506 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4763 SdHoareTripleChecker+Valid, 20887 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:52:58,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4763 Valid, 20887 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 01:52:58,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23885 states. [2021-12-16 01:52:58,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23885 to 18666. [2021-12-16 01:52:59,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18666 states, 17132 states have (on average 1.5677679196824656) internal successors, (26859), 17198 states have internal predecessors, (26859), 1078 states have call successors, (1078), 390 states have call predecessors, (1078), 454 states have return successors, (1871), 1141 states have call predecessors, (1871), 1078 states have call successors, (1871) [2021-12-16 01:52:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18666 states to 18666 states and 29808 transitions. [2021-12-16 01:52:59,055 INFO L78 Accepts]: Start accepts. Automaton has 18666 states and 29808 transitions. Word has length 134 [2021-12-16 01:52:59,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:52:59,056 INFO L470 AbstractCegarLoop]: Abstraction has 18666 states and 29808 transitions. [2021-12-16 01:52:59,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:52:59,056 INFO L276 IsEmpty]: Start isEmpty. Operand 18666 states and 29808 transitions. [2021-12-16 01:52:59,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 01:52:59,065 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:52:59,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:52:59,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 01:52:59,066 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:52:59,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:52:59,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1883670420, now seen corresponding path program 1 times [2021-12-16 01:52:59,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:52:59,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377863511] [2021-12-16 01:52:59,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:52:59,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:52:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:59,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:52:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:59,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 01:52:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:59,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 01:52:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:59,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 01:52:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:59,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 01:52:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:52:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:52:59,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:52:59,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377863511] [2021-12-16 01:52:59,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377863511] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:52:59,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:52:59,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:52:59,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546140027] [2021-12-16 01:52:59,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:52:59,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:52:59,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:52:59,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:52:59,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:52:59,160 INFO L87 Difference]: Start difference. First operand 18666 states and 29808 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:53:01,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:53:01,119 INFO L93 Difference]: Finished difference Result 40282 states and 64389 transitions. [2021-12-16 01:53:01,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:53:01,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-16 01:53:01,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:53:01,174 INFO L225 Difference]: With dead ends: 40282 [2021-12-16 01:53:01,175 INFO L226 Difference]: Without dead ends: 23753 [2021-12-16 01:53:01,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:53:01,206 INFO L933 BasicCegarLoop]: 4375 mSDtfsCounter, 4744 mSDsluCounter, 16506 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4760 SdHoareTripleChecker+Valid, 20881 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:53:01,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4760 Valid, 20881 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 01:53:01,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23753 states. [2021-12-16 01:53:01,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23753 to 18666. [2021-12-16 01:53:01,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18666 states, 17132 states have (on average 1.5639738501050666) internal successors, (26794), 17198 states have internal predecessors, (26794), 1078 states have call successors, (1078), 390 states have call predecessors, (1078), 454 states have return successors, (1871), 1141 states have call predecessors, (1871), 1078 states have call successors, (1871) [2021-12-16 01:53:01,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18666 states to 18666 states and 29743 transitions. [2021-12-16 01:53:01,958 INFO L78 Accepts]: Start accepts. Automaton has 18666 states and 29743 transitions. Word has length 134 [2021-12-16 01:53:01,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:53:01,958 INFO L470 AbstractCegarLoop]: Abstraction has 18666 states and 29743 transitions. [2021-12-16 01:53:01,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:53:01,958 INFO L276 IsEmpty]: Start isEmpty. Operand 18666 states and 29743 transitions. [2021-12-16 01:53:01,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 01:53:01,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:53:01,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:53:01,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 01:53:01,967 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:53:01,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:53:01,967 INFO L85 PathProgramCache]: Analyzing trace with hash 544588202, now seen corresponding path program 1 times [2021-12-16 01:53:01,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:53:01,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766903505] [2021-12-16 01:53:01,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:53:01,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:53:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:53:01,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:53:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:53:02,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 01:53:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:53:02,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 01:53:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:53:02,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 01:53:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:53:02,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 01:53:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:53:02,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:53:02,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:53:02,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766903505] [2021-12-16 01:53:02,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766903505] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:53:02,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:53:02,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:53:02,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104425630] [2021-12-16 01:53:02,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:53:02,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:53:02,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:53:02,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:53:02,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:53:02,048 INFO L87 Difference]: Start difference. First operand 18666 states and 29743 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:53:03,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:53:03,785 INFO L93 Difference]: Finished difference Result 40216 states and 64062 transitions. [2021-12-16 01:53:03,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:53:03,786 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-16 01:53:03,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:53:03,845 INFO L225 Difference]: With dead ends: 40216 [2021-12-16 01:53:03,845 INFO L226 Difference]: Without dead ends: 23687 [2021-12-16 01:53:03,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:53:03,880 INFO L933 BasicCegarLoop]: 4371 mSDtfsCounter, 4860 mSDsluCounter, 12406 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4876 SdHoareTripleChecker+Valid, 16777 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:53:03,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4876 Valid, 16777 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 01:53:03,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23687 states. [2021-12-16 01:53:04,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23687 to 18666. [2021-12-16 01:53:04,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18666 states, 17132 states have (on average 1.5601797805276676) internal successors, (26729), 17198 states have internal predecessors, (26729), 1078 states have call successors, (1078), 390 states have call predecessors, (1078), 454 states have return successors, (1871), 1141 states have call predecessors, (1871), 1078 states have call successors, (1871) [2021-12-16 01:53:04,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18666 states to 18666 states and 29678 transitions. [2021-12-16 01:53:04,846 INFO L78 Accepts]: Start accepts. Automaton has 18666 states and 29678 transitions. Word has length 134 [2021-12-16 01:53:04,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:53:04,846 INFO L470 AbstractCegarLoop]: Abstraction has 18666 states and 29678 transitions. [2021-12-16 01:53:04,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:53:04,847 INFO L276 IsEmpty]: Start isEmpty. Operand 18666 states and 29678 transitions. [2021-12-16 01:53:04,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 01:53:04,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:53:04,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:53:04,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 01:53:04,865 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:53:04,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:53:04,865 INFO L85 PathProgramCache]: Analyzing trace with hash -762554196, now seen corresponding path program 1 times [2021-12-16 01:53:04,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:53:04,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782541484] [2021-12-16 01:53:04,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:53:04,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:53:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:53:04,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:53:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:53:04,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 01:53:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:53:04,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 01:53:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:53:04,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 01:53:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:53:04,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 01:53:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:53:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:53:04,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:53:04,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782541484] [2021-12-16 01:53:04,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782541484] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:53:04,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:53:04,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:53:04,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011844116] [2021-12-16 01:53:04,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:53:04,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:53:04,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:53:04,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:53:04,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:53:04,999 INFO L87 Difference]: Start difference. First operand 18666 states and 29678 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:53:08,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:53:08,837 INFO L93 Difference]: Finished difference Result 63555 states and 100350 transitions. [2021-12-16 01:53:08,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:53:08,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-16 01:53:08,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:53:08,962 INFO L225 Difference]: With dead ends: 63555 [2021-12-16 01:53:08,963 INFO L226 Difference]: Without dead ends: 47026 [2021-12-16 01:53:09,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:53:09,006 INFO L933 BasicCegarLoop]: 4642 mSDtfsCounter, 5031 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5045 SdHoareTripleChecker+Valid, 21877 SdHoareTripleChecker+Invalid, 2262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 01:53:09,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5045 Valid, 21877 Invalid, 2262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 01:53:09,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47026 states. [2021-12-16 01:53:10,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47026 to 35199. [2021-12-16 01:53:10,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35199 states, 32225 states have (on average 1.5377812257564003) internal successors, (49555), 32355 states have internal predecessors, (49555), 2070 states have call successors, (2070), 774 states have call predecessors, (2070), 902 states have return successors, (4385), 2197 states have call predecessors, (4385), 2070 states have call successors, (4385) [2021-12-16 01:53:10,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35199 states to 35199 states and 56010 transitions. [2021-12-16 01:53:10,722 INFO L78 Accepts]: Start accepts. Automaton has 35199 states and 56010 transitions. Word has length 134 [2021-12-16 01:53:10,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:53:10,722 INFO L470 AbstractCegarLoop]: Abstraction has 35199 states and 56010 transitions. [2021-12-16 01:53:10,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:53:10,722 INFO L276 IsEmpty]: Start isEmpty. Operand 35199 states and 56010 transitions. [2021-12-16 01:53:10,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 01:53:10,739 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:53:10,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:53:10,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 01:53:10,740 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:53:10,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:53:10,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1134942570, now seen corresponding path program 1 times [2021-12-16 01:53:10,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:53:10,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910270045] [2021-12-16 01:53:10,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:53:10,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:53:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:53:10,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:53:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:53:10,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 01:53:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:53:10,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 01:53:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:53:10,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 01:53:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:53:10,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 01:53:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:53:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:53:10,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:53:10,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910270045] [2021-12-16 01:53:10,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910270045] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:53:10,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:53:10,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:53:10,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585757107] [2021-12-16 01:53:10,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:53:10,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:53:10,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:53:10,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:53:10,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:53:10,843 INFO L87 Difference]: Start difference. First operand 35199 states and 56010 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:53:17,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:53:17,063 INFO L93 Difference]: Finished difference Result 122230 states and 195116 transitions. [2021-12-16 01:53:17,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:53:17,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2021-12-16 01:53:17,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:53:17,346 INFO L225 Difference]: With dead ends: 122230 [2021-12-16 01:53:17,346 INFO L226 Difference]: Without dead ends: 89168 [2021-12-16 01:53:17,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:53:17,434 INFO L933 BasicCegarLoop]: 4593 mSDtfsCounter, 5064 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5088 SdHoareTripleChecker+Valid, 21828 SdHoareTripleChecker+Invalid, 2063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:53:17,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5088 Valid, 21828 Invalid, 2063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 01:53:17,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89168 states.