./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.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 bfa23a07aa8a02ca6771de75de8be171cc21a8c2878b440538c1944a91ea1c1d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:16:23,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:16:23,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:16:23,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:16:23,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:16:23,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:16:23,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:16:23,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:16:23,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:16:23,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:16:23,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:16:23,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:16:23,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:16:23,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:16:23,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:16:23,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:16:23,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:16:23,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:16:23,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:16:23,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:16:23,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:16:23,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:16:23,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:16:23,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:16:23,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:16:23,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:16:23,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:16:23,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:16:23,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:16:23,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:16:23,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:16:23,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:16:23,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:16:23,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:16:23,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:16:23,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:16:23,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:16:23,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:16:23,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:16:23,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:16:23,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:16:23,163 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:16:23,192 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:16:23,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:16:23,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:16:23,195 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:16:23,196 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:16:23,196 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:16:23,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:16:23,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:16:23,197 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:16:23,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:16:23,198 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:16:23,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:16:23,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:16:23,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:16:23,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:16:23,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:16:23,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:16:23,199 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:16:23,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:16:23,199 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:16:23,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:16:23,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:16:23,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:16:23,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:16:23,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:16:23,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:16:23,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:16:23,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:16:23,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:16:23,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:16:23,201 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:16:23,201 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:16:23,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:16:23,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:16:23,202 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfa23a07aa8a02ca6771de75de8be171cc21a8c2878b440538c1944a91ea1c1d [2021-12-21 14:16:23,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:16:23,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:16:23,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:16:23,411 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:16:23,412 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:16:23,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-1.c [2021-12-21 14:16:23,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3e7818bf/bd2ac60b56c44502b955cb5ecbadc0d9/FLAG6c2b358f1 [2021-12-21 14:16:24,168 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:16:24,169 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-1.c [2021-12-21 14:16:24,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3e7818bf/bd2ac60b56c44502b955cb5ecbadc0d9/FLAG6c2b358f1 [2021-12-21 14:16:24,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3e7818bf/bd2ac60b56c44502b955cb5ecbadc0d9 [2021-12-21 14:16:24,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:16:24,498 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:16:24,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:16:24,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:16:24,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:16:24,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:16:24" (1/1) ... [2021-12-21 14:16:24,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4031a3fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:24, skipping insertion in model container [2021-12-21 14:16:24,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:16:24" (1/1) ... [2021-12-21 14:16:24,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:16:24,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:16:26,010 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-1.c[380323,380336] [2021-12-21 14:16:26,031 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-1.c[383339,383352] [2021-12-21 14:16:26,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:16:26,214 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:16:26,811 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-1.c[380323,380336] [2021-12-21 14:16:26,821 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.08.cil-1.c[383339,383352] [2021-12-21 14:16:26,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:16:26,886 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:16:26,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:26 WrapperNode [2021-12-21 14:16:26,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:16:26,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:16:26,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:16:26,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:16:26,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:26" (1/1) ... [2021-12-21 14:16:26,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:26" (1/1) ... [2021-12-21 14:16:27,285 INFO L137 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 12967 [2021-12-21 14:16:27,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:16:27,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:16:27,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:16:27,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:16:27,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:26" (1/1) ... [2021-12-21 14:16:27,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:26" (1/1) ... [2021-12-21 14:16:27,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:26" (1/1) ... [2021-12-21 14:16:27,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:26" (1/1) ... [2021-12-21 14:16:27,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:26" (1/1) ... [2021-12-21 14:16:27,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:26" (1/1) ... [2021-12-21 14:16:27,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:26" (1/1) ... [2021-12-21 14:16:27,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:16:27,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:16:27,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:16:27,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:16:27,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:26" (1/1) ... [2021-12-21 14:16:27,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:16:27,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:16:27,803 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) [2021-12-21 14:16:27,871 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 [2021-12-21 14:16:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:16:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-21 14:16:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-21 14:16:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-21 14:16:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-21 14:16:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-21 14:16:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-21 14:16:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-21 14:16:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-21 14:16:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-21 14:16:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-21 14:16:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-21 14:16:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-21 14:16:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:16:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:16:27,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:16:28,078 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:16:28,080 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:16:32,998 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:16:33,019 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:16:33,019 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-12-21 14:16:33,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:16:33 BoogieIcfgContainer [2021-12-21 14:16:33,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:16:33,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:16:33,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:16:33,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:16:33,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:16:24" (1/3) ... [2021-12-21 14:16:33,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5808607e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:16:33, skipping insertion in model container [2021-12-21 14:16:33,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:26" (2/3) ... [2021-12-21 14:16:33,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5808607e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:16:33, skipping insertion in model container [2021-12-21 14:16:33,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:16:33" (3/3) ... [2021-12-21 14:16:33,029 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.08.cil-1.c [2021-12-21 14:16:33,032 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:16:33,032 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:16:33,070 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:16:33,075 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 [2021-12-21 14:16:33,075 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:16:33,110 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) [2021-12-21 14:16:33,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 14:16:33,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:33,121 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] [2021-12-21 14:16:33,122 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:33,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:33,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1316356206, now seen corresponding path program 1 times [2021-12-21 14:16:33,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:33,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889230640] [2021-12-21 14:16:33,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:33,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:33,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:33,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:16:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:33,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:16:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:33,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:16:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:33,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:16:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:33,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:33,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:33,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889230640] [2021-12-21 14:16:33,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889230640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:33,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:33,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:16:33,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100837555] [2021-12-21 14:16:33,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:33,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:16:33,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:33,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:16:33,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:16:33,432 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) [2021-12-21 14:16:34,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:34,414 INFO L93 Difference]: Finished difference Result 5022 states and 9244 transitions. [2021-12-21 14:16:34,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 14:16:34,417 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 [2021-12-21 14:16:34,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:34,443 INFO L225 Difference]: With dead ends: 5022 [2021-12-21 14:16:34,443 INFO L226 Difference]: Without dead ends: 2496 [2021-12-21 14:16:34,454 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 [2021-12-21 14:16:34,459 INFO L933 BasicCegarLoop]: 4499 mSDtfsCounter, 734 mSDsluCounter, 12377 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 14:16:34,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 16876 Invalid, 547 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 14:16:34,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-12-21 14:16:34,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2398. [2021-12-21 14:16:34,588 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) [2021-12-21 14:16:34,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4388 transitions. [2021-12-21 14:16:34,598 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4388 transitions. Word has length 134 [2021-12-21 14:16:34,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:16:34,598 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 4388 transitions. [2021-12-21 14:16:34,599 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) [2021-12-21 14:16:34,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4388 transitions. [2021-12-21 14:16:34,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 14:16:34,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:34,602 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] [2021-12-21 14:16:34,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:16:34,603 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:34,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:34,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2022952812, now seen corresponding path program 1 times [2021-12-21 14:16:34,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:34,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009704221] [2021-12-21 14:16:34,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:34,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:34,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:34,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:16:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:34,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:16:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:34,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:16:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:34,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:16:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:34,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:34,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009704221] [2021-12-21 14:16:34,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009704221] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:34,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:34,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 14:16:34,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737062676] [2021-12-21 14:16:34,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:34,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 14:16:34,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:34,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 14:16:34,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 14:16:34,764 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) [2021-12-21 14:16:36,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:36,484 INFO L93 Difference]: Finished difference Result 3126 states and 5555 transitions. [2021-12-21 14:16:36,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 14:16:36,484 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 [2021-12-21 14:16:36,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:36,494 INFO L225 Difference]: With dead ends: 3126 [2021-12-21 14:16:36,495 INFO L226 Difference]: Without dead ends: 2865 [2021-12-21 14:16:36,496 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 [2021-12-21 14:16:36,497 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 [2021-12-21 14:16:36,498 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] [2021-12-21 14:16:36,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2021-12-21 14:16:36,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2670. [2021-12-21 14:16:36,558 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) [2021-12-21 14:16:36,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4817 transitions. [2021-12-21 14:16:36,567 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4817 transitions. Word has length 134 [2021-12-21 14:16:36,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:16:36,568 INFO L470 AbstractCegarLoop]: Abstraction has 2670 states and 4817 transitions. [2021-12-21 14:16:36,568 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) [2021-12-21 14:16:36,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4817 transitions. [2021-12-21 14:16:36,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 14:16:36,570 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:36,570 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] [2021-12-21 14:16:36,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:16:36,570 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:36,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:36,571 INFO L85 PathProgramCache]: Analyzing trace with hash 316449264, now seen corresponding path program 1 times [2021-12-21 14:16:36,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:36,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109370473] [2021-12-21 14:16:36,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:36,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:36,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:36,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:16:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:36,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:16:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:36,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:16:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:36,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:16:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:36,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:36,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:36,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109370473] [2021-12-21 14:16:36,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109370473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:36,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:36,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:16:36,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992135392] [2021-12-21 14:16:36,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:36,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:16:36,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:36,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:16:36,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:16:36,775 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) [2021-12-21 14:16:38,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:38,819 INFO L93 Difference]: Finished difference Result 3779 states and 6593 transitions. [2021-12-21 14:16:38,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:16:38,820 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 [2021-12-21 14:16:38,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:38,830 INFO L225 Difference]: With dead ends: 3779 [2021-12-21 14:16:38,830 INFO L226 Difference]: Without dead ends: 3246 [2021-12-21 14:16:38,832 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 [2021-12-21 14:16:38,833 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, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:16:38,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5079 Valid, 21924 Invalid, 2232 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 14:16:38,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2021-12-21 14:16:38,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2923. [2021-12-21 14:16:38,894 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) [2021-12-21 14:16:38,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 5207 transitions. [2021-12-21 14:16:38,902 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 5207 transitions. Word has length 134 [2021-12-21 14:16:38,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:16:38,902 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 5207 transitions. [2021-12-21 14:16:38,902 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) [2021-12-21 14:16:38,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 5207 transitions. [2021-12-21 14:16:38,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 14:16:38,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:38,904 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] [2021-12-21 14:16:38,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 14:16:38,904 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:38,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:38,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1976631762, now seen corresponding path program 1 times [2021-12-21 14:16:38,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:38,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293405535] [2021-12-21 14:16:38,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:38,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:38,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:38,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:16:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:38,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:16:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:38,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:16:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:38,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:16:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:38,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:38,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293405535] [2021-12-21 14:16:38,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293405535] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:38,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:38,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:16:38,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508945028] [2021-12-21 14:16:38,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:38,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:16:38,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:38,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:16:38,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:16:38,996 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) [2021-12-21 14:16:40,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:40,846 INFO L93 Difference]: Finished difference Result 4741 states and 8111 transitions. [2021-12-21 14:16:40,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:16:40,847 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 [2021-12-21 14:16:40,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:40,860 INFO L225 Difference]: With dead ends: 4741 [2021-12-21 14:16:40,860 INFO L226 Difference]: Without dead ends: 3955 [2021-12-21 14:16:40,863 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 [2021-12-21 14:16:40,864 INFO L933 BasicCegarLoop]: 4494 mSDtfsCounter, 5141 mSDsluCounter, 16786 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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 [2021-12-21 14:16:40,864 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] [2021-12-21 14:16:40,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2021-12-21 14:16:40,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3430. [2021-12-21 14:16:40,957 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) [2021-12-21 14:16:40,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 5992 transitions. [2021-12-21 14:16:40,967 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 5992 transitions. Word has length 134 [2021-12-21 14:16:40,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:16:40,968 INFO L470 AbstractCegarLoop]: Abstraction has 3430 states and 5992 transitions. [2021-12-21 14:16:40,968 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) [2021-12-21 14:16:40,968 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 5992 transitions. [2021-12-21 14:16:40,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 14:16:40,970 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:40,970 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] [2021-12-21 14:16:40,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:16:40,970 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:40,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:40,971 INFO L85 PathProgramCache]: Analyzing trace with hash -249486800, now seen corresponding path program 1 times [2021-12-21 14:16:40,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:40,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237904841] [2021-12-21 14:16:40,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:40,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:40,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:41,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:16:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:41,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:16:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:41,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:16:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:41,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:16:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:41,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:41,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237904841] [2021-12-21 14:16:41,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237904841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:41,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:41,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:16:41,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717329310] [2021-12-21 14:16:41,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:41,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:16:41,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:41,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:16:41,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:16:41,064 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) [2021-12-21 14:16:43,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:43,048 INFO L93 Difference]: Finished difference Result 6592 states and 11016 transitions. [2021-12-21 14:16:43,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:16:43,049 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 [2021-12-21 14:16:43,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:43,066 INFO L225 Difference]: With dead ends: 6592 [2021-12-21 14:16:43,067 INFO L226 Difference]: Without dead ends: 5299 [2021-12-21 14:16:43,072 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 [2021-12-21 14:16:43,073 INFO L933 BasicCegarLoop]: 4665 mSDtfsCounter, 5059 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2167 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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 [2021-12-21 14:16:43,073 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] [2021-12-21 14:16:43,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5299 states. [2021-12-21 14:16:43,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5299 to 4445. [2021-12-21 14:16:43,185 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) [2021-12-21 14:16:43,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4445 states to 4445 states and 7568 transitions. [2021-12-21 14:16:43,196 INFO L78 Accepts]: Start accepts. Automaton has 4445 states and 7568 transitions. Word has length 134 [2021-12-21 14:16:43,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:16:43,197 INFO L470 AbstractCegarLoop]: Abstraction has 4445 states and 7568 transitions. [2021-12-21 14:16:43,197 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) [2021-12-21 14:16:43,197 INFO L276 IsEmpty]: Start isEmpty. Operand 4445 states and 7568 transitions. [2021-12-21 14:16:43,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 14:16:43,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:43,199 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] [2021-12-21 14:16:43,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 14:16:43,199 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:43,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:43,200 INFO L85 PathProgramCache]: Analyzing trace with hash 221869550, now seen corresponding path program 1 times [2021-12-21 14:16:43,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:43,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811216154] [2021-12-21 14:16:43,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:43,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:43,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:43,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:16:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:16:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:43,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:16:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:43,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:16:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:43,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:43,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:43,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811216154] [2021-12-21 14:16:43,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811216154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:43,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:43,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:16:43,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102715893] [2021-12-21 14:16:43,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:43,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:16:43,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:43,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:16:43,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:16:43,306 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) [2021-12-21 14:16:45,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:45,211 INFO L93 Difference]: Finished difference Result 10286 states and 16830 transitions. [2021-12-21 14:16:45,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:16:45,212 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 [2021-12-21 14:16:45,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:45,241 INFO L225 Difference]: With dead ends: 10286 [2021-12-21 14:16:45,241 INFO L226 Difference]: Without dead ends: 7978 [2021-12-21 14:16:45,251 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 [2021-12-21 14:16:45,252 INFO L933 BasicCegarLoop]: 4657 mSDtfsCounter, 5054 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2147 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 14:16:45,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5069 Valid, 21900 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2147 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 14:16:45,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7978 states. [2021-12-21 14:16:45,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7978 to 6489. [2021-12-21 14:16:45,510 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) [2021-12-21 14:16:45,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6489 states to 6489 states and 10762 transitions. [2021-12-21 14:16:45,543 INFO L78 Accepts]: Start accepts. Automaton has 6489 states and 10762 transitions. Word has length 134 [2021-12-21 14:16:45,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:16:45,543 INFO L470 AbstractCegarLoop]: Abstraction has 6489 states and 10762 transitions. [2021-12-21 14:16:45,544 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) [2021-12-21 14:16:45,544 INFO L276 IsEmpty]: Start isEmpty. Operand 6489 states and 10762 transitions. [2021-12-21 14:16:45,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 14:16:45,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:45,547 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] [2021-12-21 14:16:45,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 14:16:45,547 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:45,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:45,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1909481172, now seen corresponding path program 1 times [2021-12-21 14:16:45,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:45,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546961150] [2021-12-21 14:16:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:45,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:45,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:45,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:16:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:45,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:16:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:45,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:16:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:45,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:16:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:45,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:45,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546961150] [2021-12-21 14:16:45,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546961150] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:45,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:45,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:16:45,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927444607] [2021-12-21 14:16:45,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:45,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:16:45,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:45,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:16:45,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:16:45,679 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) [2021-12-21 14:16:47,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:47,933 INFO L93 Difference]: Finished difference Result 17692 states and 28550 transitions. [2021-12-21 14:16:47,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:16:47,934 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 [2021-12-21 14:16:47,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:47,990 INFO L225 Difference]: With dead ends: 17692 [2021-12-21 14:16:47,990 INFO L226 Difference]: Without dead ends: 13340 [2021-12-21 14:16:48,006 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 [2021-12-21 14:16:48,009 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, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:16:48,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5068 Valid, 21895 Invalid, 2213 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 14:16:48,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13340 states. [2021-12-21 14:16:48,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13340 to 10590. [2021-12-21 14:16:48,533 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) [2021-12-21 14:16:48,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17222 transitions. [2021-12-21 14:16:48,557 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17222 transitions. Word has length 134 [2021-12-21 14:16:48,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:16:48,557 INFO L470 AbstractCegarLoop]: Abstraction has 10590 states and 17222 transitions. [2021-12-21 14:16:48,557 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) [2021-12-21 14:16:48,558 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17222 transitions. [2021-12-21 14:16:48,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 14:16:48,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:48,563 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] [2021-12-21 14:16:48,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 14:16:48,563 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:48,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:48,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1346901550, now seen corresponding path program 1 times [2021-12-21 14:16:48,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:48,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816768824] [2021-12-21 14:16:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:48,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:48,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:48,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:16:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:48,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:16:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:48,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:16:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:48,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:16:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:48,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:48,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816768824] [2021-12-21 14:16:48,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816768824] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:48,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:48,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:16:48,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355694396] [2021-12-21 14:16:48,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:48,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:16:48,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:48,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:16:48,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:16:48,673 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) [2021-12-21 14:16:50,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:50,088 INFO L93 Difference]: Finished difference Result 21934 states and 35495 transitions. [2021-12-21 14:16:50,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 14:16:50,089 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 [2021-12-21 14:16:50,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:50,124 INFO L225 Difference]: With dead ends: 21934 [2021-12-21 14:16:50,124 INFO L226 Difference]: Without dead ends: 13481 [2021-12-21 14:16:50,144 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 [2021-12-21 14:16:50,145 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, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 14:16:50,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4768 Valid, 20906 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 14:16:50,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13481 states. [2021-12-21 14:16:50,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13481 to 10590. [2021-12-21 14:16:50,524 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) [2021-12-21 14:16:50,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17189 transitions. [2021-12-21 14:16:50,547 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17189 transitions. Word has length 134 [2021-12-21 14:16:50,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:16:50,547 INFO L470 AbstractCegarLoop]: Abstraction has 10590 states and 17189 transitions. [2021-12-21 14:16:50,547 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) [2021-12-21 14:16:50,548 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17189 transitions. [2021-12-21 14:16:50,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 14:16:50,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:50,553 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] [2021-12-21 14:16:50,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 14:16:50,554 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:50,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:50,554 INFO L85 PathProgramCache]: Analyzing trace with hash -626263828, now seen corresponding path program 1 times [2021-12-21 14:16:50,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:50,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724147340] [2021-12-21 14:16:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:50,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:50,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:50,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:16:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:50,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:16:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:50,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:16:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:50,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:16:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:50,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:50,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:50,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724147340] [2021-12-21 14:16:50,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724147340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:50,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:50,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:16:50,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600551291] [2021-12-21 14:16:50,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:50,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:16:50,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:50,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:16:50,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:16:50,662 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) [2021-12-21 14:16:53,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:53,678 INFO L93 Difference]: Finished difference Result 32469 states and 51948 transitions. [2021-12-21 14:16:53,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:16:53,679 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 [2021-12-21 14:16:53,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:53,747 INFO L225 Difference]: With dead ends: 32469 [2021-12-21 14:16:53,748 INFO L226 Difference]: Without dead ends: 24016 [2021-12-21 14:16:53,779 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 [2021-12-21 14:16:53,781 INFO L933 BasicCegarLoop]: 4641 mSDtfsCounter, 5045 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5060 SdHoareTripleChecker+Valid, 21884 SdHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:16:53,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5060 Valid, 21884 Invalid, 2186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 14:16:53,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24016 states. [2021-12-21 14:16:54,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24016 to 18856. [2021-12-21 14:16:54,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18856 states, 17290 states have (on average 1.5792943898207057) internal successors, (27306), 17356 states have internal predecessors, (27306), 1110 states have call successors, (1110), 390 states have call predecessors, (1110), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2021-12-21 14:16:54,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18856 states to 18856 states and 30319 transitions. [2021-12-21 14:16:54,656 INFO L78 Accepts]: Start accepts. Automaton has 18856 states and 30319 transitions. Word has length 134 [2021-12-21 14:16:54,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:16:54,657 INFO L470 AbstractCegarLoop]: Abstraction has 18856 states and 30319 transitions. [2021-12-21 14:16:54,657 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) [2021-12-21 14:16:54,657 INFO L276 IsEmpty]: Start isEmpty. Operand 18856 states and 30319 transitions. [2021-12-21 14:16:54,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 14:16:54,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:54,665 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] [2021-12-21 14:16:54,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 14:16:54,666 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:54,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:54,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1526842990, now seen corresponding path program 1 times [2021-12-21 14:16:54,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:54,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78084976] [2021-12-21 14:16:54,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:54,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:54,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:54,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:16:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:54,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:16:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:54,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:16:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:54,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:16:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:54,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:54,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:54,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78084976] [2021-12-21 14:16:54,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78084976] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:54,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:54,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:16:54,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720805567] [2021-12-21 14:16:54,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:54,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:16:54,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:54,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:16:54,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:16:54,750 INFO L87 Difference]: Start difference. First operand 18856 states and 30319 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) [2021-12-21 14:16:59,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:59,472 INFO L93 Difference]: Finished difference Result 69837 states and 111398 transitions. [2021-12-21 14:16:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 14:16:59,472 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 [2021-12-21 14:16:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:59,648 INFO L225 Difference]: With dead ends: 69837 [2021-12-21 14:16:59,649 INFO L226 Difference]: Without dead ends: 53118 [2021-12-21 14:16:59,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 14:16:59,697 INFO L933 BasicCegarLoop]: 4634 mSDtfsCounter, 5374 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5398 SdHoareTripleChecker+Valid, 21869 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:16:59,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5398 Valid, 21869 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2097 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 14:16:59,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53118 states. [2021-12-21 14:17:01,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53118 to 35257. [2021-12-21 14:17:01,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35257 states, 32219 states have (on average 1.5616872032030789) internal successors, (50316), 32349 states have internal predecessors, (50316), 2134 states have call successors, (2134), 774 states have call predecessors, (2134), 902 states have return successors, (4449), 2261 states have call predecessors, (4449), 2134 states have call successors, (4449) [2021-12-21 14:17:01,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35257 states to 35257 states and 56899 transitions. [2021-12-21 14:17:01,571 INFO L78 Accepts]: Start accepts. Automaton has 35257 states and 56899 transitions. Word has length 134 [2021-12-21 14:17:01,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:17:01,572 INFO L470 AbstractCegarLoop]: Abstraction has 35257 states and 56899 transitions. [2021-12-21 14:17:01,572 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) [2021-12-21 14:17:01,572 INFO L276 IsEmpty]: Start isEmpty. Operand 35257 states and 56899 transitions. [2021-12-21 14:17:01,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 14:17:01,595 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:17:01,595 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] [2021-12-21 14:17:01,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 14:17:01,596 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:17:01,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:17:01,596 INFO L85 PathProgramCache]: Analyzing trace with hash 903561388, now seen corresponding path program 1 times [2021-12-21 14:17:01,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:17:01,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18501437] [2021-12-21 14:17:01,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:17:01,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:17:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:01,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:17:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:01,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:17:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:01,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:17:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:01,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:17:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:01,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:17:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:01,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:17:01,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:17:01,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18501437] [2021-12-21 14:17:01,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18501437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:17:01,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:17:01,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:17:01,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083538134] [2021-12-21 14:17:01,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:17:01,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:17:01,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:17:01,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:17:01,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:17:01,697 INFO L87 Difference]: Start difference. First operand 35257 states and 56899 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) [2021-12-21 14:17:10,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:17:10,368 INFO L93 Difference]: Finished difference Result 134716 states and 217164 transitions. [2021-12-21 14:17:10,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 14:17:10,368 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 [2021-12-21 14:17:10,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:17:10,784 INFO L225 Difference]: With dead ends: 134716 [2021-12-21 14:17:10,784 INFO L226 Difference]: Without dead ends: 101596 [2021-12-21 14:17:10,891 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 [2021-12-21 14:17:10,892 INFO L933 BasicCegarLoop]: 4603 mSDtfsCounter, 5181 mSDsluCounter, 16806 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5195 SdHoareTripleChecker+Valid, 21409 SdHoareTripleChecker+Invalid, 2355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 14:17:10,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5195 Valid, 21409 Invalid, 2355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 14:17:10,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101596 states. [2021-12-21 14:17:15,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101596 to 67354. [2021-12-21 14:17:15,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67354 states, 61436 states have (on average 1.5524122664235953) internal successors, (95374), 61694 states have internal predecessors, (95374), 4118 states have call successors, (4118), 1542 states have call predecessors, (4118), 1798 states have return successors, (10935), 4373 states have call predecessors, (10935), 4118 states have call successors, (10935) [2021-12-21 14:17:15,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67354 states to 67354 states and 110427 transitions. [2021-12-21 14:17:15,638 INFO L78 Accepts]: Start accepts. Automaton has 67354 states and 110427 transitions. Word has length 134 [2021-12-21 14:17:15,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:17:15,639 INFO L470 AbstractCegarLoop]: Abstraction has 67354 states and 110427 transitions. [2021-12-21 14:17:15,639 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) [2021-12-21 14:17:15,639 INFO L276 IsEmpty]: Start isEmpty. Operand 67354 states and 110427 transitions. [2021-12-21 14:17:15,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 14:17:15,667 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:17:15,668 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] [2021-12-21 14:17:15,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 14:17:15,668 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:17:15,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:17:15,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1022002862, now seen corresponding path program 1 times [2021-12-21 14:17:15,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:17:15,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723830139] [2021-12-21 14:17:15,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:17:15,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:17:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:15,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:17:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:15,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:17:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:15,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:17:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:15,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:17:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:15,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:17:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:17:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:17:15,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:17:15,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723830139] [2021-12-21 14:17:15,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723830139] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:17:15,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:17:15,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:17:15,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462288558] [2021-12-21 14:17:15,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:17:15,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:17:15,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:17:15,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:17:15,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:17:15,751 INFO L87 Difference]: Start difference. First operand 67354 states and 110427 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)