./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.14.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.14.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash baf2679bf12305063b7a185b7ceccd8123ae67f841713533125dfbe04aeffae0 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 18:53:31,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 18:53:31,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 18:53:31,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 18:53:31,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 18:53:31,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 18:53:31,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 18:53:31,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 18:53:31,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 18:53:31,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 18:53:31,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 18:53:31,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 18:53:31,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 18:53:31,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 18:53:31,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 18:53:31,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 18:53:31,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 18:53:31,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 18:53:31,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 18:53:31,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 18:53:31,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 18:53:31,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 18:53:31,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 18:53:31,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 18:53:31,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 18:53:31,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 18:53:31,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 18:53:31,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 18:53:31,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 18:53:31,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 18:53:31,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 18:53:31,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 18:53:31,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 18:53:31,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 18:53:31,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 18:53:31,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 18:53:31,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 18:53:31,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 18:53:31,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 18:53:31,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 18:53:31,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 18:53:31,244 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 18:53:31,272 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 18:53:31,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 18:53:31,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 18:53:31,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 18:53:31,273 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 18:53:31,274 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 18:53:31,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 18:53:31,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 18:53:31,275 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 18:53:31,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 18:53:31,275 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 18:53:31,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 18:53:31,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 18:53:31,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 18:53:31,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 18:53:31,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 18:53:31,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 18:53:31,276 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 18:53:31,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 18:53:31,277 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 18:53:31,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 18:53:31,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 18:53:31,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 18:53:31,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 18:53:31,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:53:31,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 18:53:31,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 18:53:31,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 18:53:31,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 18:53:31,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 18:53:31,279 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 18:53:31,279 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 18:53:31,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 18:53:31,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 18:53:31,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> baf2679bf12305063b7a185b7ceccd8123ae67f841713533125dfbe04aeffae0 [2021-12-17 18:53:31,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 18:53:31,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 18:53:31,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 18:53:31,499 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 18:53:31,503 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 18:53:31,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.14.cil.c [2021-12-17 18:53:31,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a4e3d66e/f2599008a19f4cdb8c0b61f5877eafe8/FLAG2a07372db [2021-12-17 18:53:32,385 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 18:53:32,385 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.14.cil.c [2021-12-17 18:53:32,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a4e3d66e/f2599008a19f4cdb8c0b61f5877eafe8/FLAG2a07372db [2021-12-17 18:53:32,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a4e3d66e/f2599008a19f4cdb8c0b61f5877eafe8 [2021-12-17 18:53:32,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 18:53:32,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 18:53:32,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 18:53:32,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 18:53:32,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 18:53:32,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:53:32" (1/1) ... [2021-12-17 18:53:32,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29881324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:32, skipping insertion in model container [2021-12-17 18:53:32,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:53:32" (1/1) ... [2021-12-17 18:53:32,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 18:53:33,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 18:53:34,553 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_label42+token_ring.14.cil.c[378560,378573] [2021-12-17 18:53:34,578 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_label42+token_ring.14.cil.c[383339,383352] [2021-12-17 18:53:34,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:53:34,844 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 18:53:35,548 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_label42+token_ring.14.cil.c[378560,378573] [2021-12-17 18:53:35,556 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.14.cil.c[383339,383352] [2021-12-17 18:53:35,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:53:35,648 INFO L208 MainTranslator]: Completed translation [2021-12-17 18:53:35,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:35 WrapperNode [2021-12-17 18:53:35,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 18:53:35,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 18:53:35,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 18:53:35,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 18:53:35,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:35" (1/1) ... [2021-12-17 18:53:35,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:35" (1/1) ... [2021-12-17 18:53:36,078 INFO L137 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13202 [2021-12-17 18:53:36,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 18:53:36,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 18:53:36,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 18:53:36,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 18:53:36,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:35" (1/1) ... [2021-12-17 18:53:36,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:35" (1/1) ... [2021-12-17 18:53:36,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:35" (1/1) ... [2021-12-17 18:53:36,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:35" (1/1) ... [2021-12-17 18:53:36,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:35" (1/1) ... [2021-12-17 18:53:36,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:35" (1/1) ... [2021-12-17 18:53:36,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:35" (1/1) ... [2021-12-17 18:53:36,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 18:53:36,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 18:53:36,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 18:53:36,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 18:53:36,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:35" (1/1) ... [2021-12-17 18:53:36,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:53:36,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:53:36,793 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 18:53:36,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 18:53:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 18:53:36,923 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-17 18:53:36,923 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-17 18:53:36,923 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 18:53:36,923 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 18:53:36,923 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-17 18:53:36,924 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-17 18:53:36,924 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-17 18:53:36,924 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-17 18:53:36,924 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-17 18:53:36,924 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-17 18:53:36,924 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-17 18:53:36,924 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-17 18:53:36,924 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-17 18:53:36,924 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-17 18:53:36,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 18:53:36,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 18:53:36,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 18:53:37,126 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 18:53:37,127 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 18:53:42,674 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 18:53:42,701 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 18:53:42,702 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-17 18:53:42,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:53:42 BoogieIcfgContainer [2021-12-17 18:53:42,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 18:53:42,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 18:53:42,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 18:53:42,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 18:53:42,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 06:53:32" (1/3) ... [2021-12-17 18:53:42,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1cfe41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:53:42, skipping insertion in model container [2021-12-17 18:53:42,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:35" (2/3) ... [2021-12-17 18:53:42,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1cfe41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:53:42, skipping insertion in model container [2021-12-17 18:53:42,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:53:42" (3/3) ... [2021-12-17 18:53:42,716 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.14.cil.c [2021-12-17 18:53:42,723 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 18:53:42,723 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 18:53:42,779 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 18:53:42,785 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 18:53:42,785 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 18:53:42,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 2571 states, 2533 states have (on average 1.843268851164627) internal successors, (4669), 2538 states have internal predecessors, (4669), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-17 18:53:42,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:53:42,839 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:42,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:42,840 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:42,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:42,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1261108038, now seen corresponding path program 1 times [2021-12-17 18:53:42,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:42,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086148648] [2021-12-17 18:53:42,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:42,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:43,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:43,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:53:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:43,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:53:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:43,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:53:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:43,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:53:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:43,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:43,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:43,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086148648] [2021-12-17 18:53:43,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086148648] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:43,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:43,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 18:53:43,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708588969] [2021-12-17 18:53:43,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:43,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 18:53:43,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:43,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 18:53:43,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 18:53:43,474 INFO L87 Difference]: Start difference. First operand has 2571 states, 2533 states have (on average 1.843268851164627) internal successors, (4669), 2538 states have internal predecessors, (4669), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:45,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:45,217 INFO L93 Difference]: Finished difference Result 5277 states and 9684 transitions. [2021-12-17 18:53:45,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:53:45,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:53:45,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:45,244 INFO L225 Difference]: With dead ends: 5277 [2021-12-17 18:53:45,244 INFO L226 Difference]: Without dead ends: 2645 [2021-12-17 18:53:45,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:53:45,256 INFO L933 BasicCegarLoop]: 4691 mSDtfsCounter, 1044 mSDsluCounter, 12495 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 17186 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:45,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 17186 Invalid, 767 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 18:53:45,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2021-12-17 18:53:45,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2503. [2021-12-17 18:53:45,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2467 states have (on average 1.8265099310903932) internal successors, (4506), 2470 states have internal predecessors, (4506), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-17 18:53:45,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4560 transitions. [2021-12-17 18:53:45,389 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4560 transitions. Word has length 179 [2021-12-17 18:53:45,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:45,389 INFO L470 AbstractCegarLoop]: Abstraction has 2503 states and 4560 transitions. [2021-12-17 18:53:45,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:45,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4560 transitions. [2021-12-17 18:53:45,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:53:45,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:45,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:45,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 18:53:45,408 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:45,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:45,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1530760952, now seen corresponding path program 1 times [2021-12-17 18:53:45,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:45,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639355806] [2021-12-17 18:53:45,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:45,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:45,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:45,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:53:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:45,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:53:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:45,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:53:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:45,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:53:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:45,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:45,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:45,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639355806] [2021-12-17 18:53:45,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639355806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:45,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:45,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 18:53:45,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175492248] [2021-12-17 18:53:45,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:45,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 18:53:45,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:45,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 18:53:45,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 18:53:45,674 INFO L87 Difference]: Start difference. First operand 2503 states and 4560 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:47,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:47,155 INFO L93 Difference]: Finished difference Result 3012 states and 5382 transitions. [2021-12-17 18:53:47,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:53:47,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:53:47,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:47,167 INFO L225 Difference]: With dead ends: 3012 [2021-12-17 18:53:47,168 INFO L226 Difference]: Without dead ends: 2645 [2021-12-17 18:53:47,169 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 [2021-12-17 18:53:47,170 INFO L933 BasicCegarLoop]: 4621 mSDtfsCounter, 1030 mSDsluCounter, 12292 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 16913 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:47,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 16913 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:53:47,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2021-12-17 18:53:47,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2503. [2021-12-17 18:53:47,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2467 states have (on average 1.8261045804620997) internal successors, (4505), 2470 states have internal predecessors, (4505), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-17 18:53:47,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4559 transitions. [2021-12-17 18:53:47,240 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4559 transitions. Word has length 179 [2021-12-17 18:53:47,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:47,241 INFO L470 AbstractCegarLoop]: Abstraction has 2503 states and 4559 transitions. [2021-12-17 18:53:47,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:47,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4559 transitions. [2021-12-17 18:53:47,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:53:47,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:47,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:47,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 18:53:47,246 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:47,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:47,246 INFO L85 PathProgramCache]: Analyzing trace with hash -2101032758, now seen corresponding path program 1 times [2021-12-17 18:53:47,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:47,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424337325] [2021-12-17 18:53:47,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:47,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:47,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:47,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:53:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:47,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:53:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:47,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:53:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:47,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:53:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:47,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:47,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:47,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424337325] [2021-12-17 18:53:47,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424337325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:47,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:47,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 18:53:47,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757410231] [2021-12-17 18:53:47,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:47,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 18:53:47,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:47,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 18:53:47,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 18:53:47,445 INFO L87 Difference]: Start difference. First operand 2503 states and 4559 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:50,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:50,353 INFO L93 Difference]: Finished difference Result 3529 states and 6222 transitions. [2021-12-17 18:53:50,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 18:53:50,354 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:53:50,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:50,371 INFO L225 Difference]: With dead ends: 3529 [2021-12-17 18:53:50,371 INFO L226 Difference]: Without dead ends: 3167 [2021-12-17 18:53:50,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:53:50,374 INFO L933 BasicCegarLoop]: 4673 mSDtfsCounter, 5521 mSDsluCounter, 12900 mSDsCounter, 0 mSdLazyCounter, 1956 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5540 SdHoareTripleChecker+Valid, 17573 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:50,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5540 Valid, 17573 Invalid, 2080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 1956 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-17 18:53:50,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2021-12-17 18:53:50,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 2882. [2021-12-17 18:53:50,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2818 states have (on average 1.798083747338538) internal successors, (5067), 2822 states have internal predecessors, (5067), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-17 18:53:50,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 5166 transitions. [2021-12-17 18:53:50,471 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 5166 transitions. Word has length 179 [2021-12-17 18:53:50,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:50,471 INFO L470 AbstractCegarLoop]: Abstraction has 2882 states and 5166 transitions. [2021-12-17 18:53:50,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:50,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 5166 transitions. [2021-12-17 18:53:50,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:53:50,474 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:50,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:50,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 18:53:50,475 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:50,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:50,475 INFO L85 PathProgramCache]: Analyzing trace with hash 808194758, now seen corresponding path program 1 times [2021-12-17 18:53:50,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:50,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256984001] [2021-12-17 18:53:50,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:50,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:50,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:50,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:53:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:50,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:53:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:50,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:53:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:50,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:53:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:50,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:50,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:50,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256984001] [2021-12-17 18:53:50,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256984001] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:50,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:50,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:50,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592161251] [2021-12-17 18:53:50,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:50,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:50,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:50,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:50,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:50,642 INFO L87 Difference]: Start difference. First operand 2882 states and 5166 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:54,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:54,060 INFO L93 Difference]: Finished difference Result 4448 states and 7708 transitions. [2021-12-17 18:53:54,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:53:54,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:53:54,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:54,076 INFO L225 Difference]: With dead ends: 4448 [2021-12-17 18:53:54,077 INFO L226 Difference]: Without dead ends: 3707 [2021-12-17 18:53:54,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:53:54,080 INFO L933 BasicCegarLoop]: 4980 mSDtfsCounter, 5549 mSDsluCounter, 17815 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5568 SdHoareTripleChecker+Valid, 22795 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:54,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5568 Valid, 22795 Invalid, 3152 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 3072 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-17 18:53:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2021-12-17 18:53:54,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 3234. [2021-12-17 18:53:54,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3142 states have (on average 1.7743475493316359) internal successors, (5575), 3147 states have internal predecessors, (5575), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2021-12-17 18:53:54,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 5718 transitions. [2021-12-17 18:53:54,197 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 5718 transitions. Word has length 179 [2021-12-17 18:53:54,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:54,201 INFO L470 AbstractCegarLoop]: Abstraction has 3234 states and 5718 transitions. [2021-12-17 18:53:54,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:54,201 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 5718 transitions. [2021-12-17 18:53:54,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:53:54,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:54,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:54,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 18:53:54,204 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:54,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:54,205 INFO L85 PathProgramCache]: Analyzing trace with hash -961276856, now seen corresponding path program 1 times [2021-12-17 18:53:54,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:54,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979674290] [2021-12-17 18:53:54,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:54,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:54,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:54,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:53:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:54,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:53:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:54,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:53:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:54,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:53:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:54,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:54,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:54,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979674290] [2021-12-17 18:53:54,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979674290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:54,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:54,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:54,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417696549] [2021-12-17 18:53:54,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:54,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:54,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:54,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:54,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:54,361 INFO L87 Difference]: Start difference. First operand 3234 states and 5718 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:57,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:53:57,361 INFO L93 Difference]: Finished difference Result 5803 states and 9880 transitions. [2021-12-17 18:53:57,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:53:57,361 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:53:57,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:53:57,383 INFO L225 Difference]: With dead ends: 5803 [2021-12-17 18:53:57,384 INFO L226 Difference]: Without dead ends: 4710 [2021-12-17 18:53:57,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:53:57,389 INFO L933 BasicCegarLoop]: 4717 mSDtfsCounter, 5660 mSDsluCounter, 17150 mSDsCounter, 0 mSdLazyCounter, 2725 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5679 SdHoareTripleChecker+Valid, 21867 SdHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:53:57,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5679 Valid, 21867 Invalid, 2848 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 2725 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-17 18:53:57,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2021-12-17 18:53:57,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 3939. [2021-12-17 18:53:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3939 states, 3791 states have (on average 1.738855183328937) internal successors, (6592), 3798 states have internal predecessors, (6592), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-17 18:53:57,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 6827 transitions. [2021-12-17 18:53:57,578 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 6827 transitions. Word has length 179 [2021-12-17 18:53:57,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:53:57,578 INFO L470 AbstractCegarLoop]: Abstraction has 3939 states and 6827 transitions. [2021-12-17 18:53:57,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:53:57,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 6827 transitions. [2021-12-17 18:53:57,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:53:57,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:53:57,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:53:57,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 18:53:57,583 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:53:57,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:53:57,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1572545914, now seen corresponding path program 1 times [2021-12-17 18:53:57,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:53:57,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012431335] [2021-12-17 18:53:57,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:53:57,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:53:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:57,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:53:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:57,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:53:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:57,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:53:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:57,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:53:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:57,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:53:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:53:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:53:57,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:53:57,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012431335] [2021-12-17 18:53:57,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012431335] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:53:57,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:53:57,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:53:57,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903698840] [2021-12-17 18:53:57,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:53:57,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:53:57,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:53:57,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:53:57,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:53:57,760 INFO L87 Difference]: Start difference. First operand 3939 states and 6827 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:01,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:01,176 INFO L93 Difference]: Finished difference Result 8408 states and 14029 transitions. [2021-12-17 18:54:01,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:54:01,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:54:01,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:01,225 INFO L225 Difference]: With dead ends: 8408 [2021-12-17 18:54:01,226 INFO L226 Difference]: Without dead ends: 6610 [2021-12-17 18:54:01,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:54:01,236 INFO L933 BasicCegarLoop]: 4968 mSDtfsCounter, 5544 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3075 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5563 SdHoareTripleChecker+Valid, 22779 SdHoareTripleChecker+Invalid, 3160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:01,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5563 Valid, 22779 Invalid, 3160 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 3075 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-17 18:54:01,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6610 states. [2021-12-17 18:54:01,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6610 to 5350. [2021-12-17 18:54:01,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5350 states, 5090 states have (on average 1.694695481335953) internal successors, (8626), 5101 states have internal predecessors, (8626), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2021-12-17 18:54:01,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5350 states to 5350 states and 9051 transitions. [2021-12-17 18:54:01,570 INFO L78 Accepts]: Start accepts. Automaton has 5350 states and 9051 transitions. Word has length 179 [2021-12-17 18:54:01,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:01,571 INFO L470 AbstractCegarLoop]: Abstraction has 5350 states and 9051 transitions. [2021-12-17 18:54:01,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:01,571 INFO L276 IsEmpty]: Start isEmpty. Operand 5350 states and 9051 transitions. [2021-12-17 18:54:01,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:54:01,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:01,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:01,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 18:54:01,575 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:01,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:01,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1317229704, now seen corresponding path program 1 times [2021-12-17 18:54:01,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:01,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300446217] [2021-12-17 18:54:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:01,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:01,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:01,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:54:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:01,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:54:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:01,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:54:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:01,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:54:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:01,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:01,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300446217] [2021-12-17 18:54:01,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300446217] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:01,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:01,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:01,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800930794] [2021-12-17 18:54:01,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:01,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:01,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:01,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:01,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:01,746 INFO L87 Difference]: Start difference. First operand 5350 states and 9051 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:04,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:04,847 INFO L93 Difference]: Finished difference Result 13610 states and 22331 transitions. [2021-12-17 18:54:04,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:54:04,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:54:04,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:04,885 INFO L225 Difference]: With dead ends: 13610 [2021-12-17 18:54:04,885 INFO L226 Difference]: Without dead ends: 10401 [2021-12-17 18:54:04,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:54:04,900 INFO L933 BasicCegarLoop]: 4960 mSDtfsCounter, 5539 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3055 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5558 SdHoareTripleChecker+Valid, 22771 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:04,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5558 Valid, 22771 Invalid, 3141 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3055 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-17 18:54:04,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10401 states. [2021-12-17 18:54:05,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10401 to 8186. [2021-12-17 18:54:05,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8186 states, 7702 states have (on average 1.6512594131394442) internal successors, (12718), 7721 states have internal predecessors, (12718), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2021-12-17 18:54:05,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8186 states to 8186 states and 13541 transitions. [2021-12-17 18:54:05,384 INFO L78 Accepts]: Start accepts. Automaton has 8186 states and 13541 transitions. Word has length 179 [2021-12-17 18:54:05,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:05,385 INFO L470 AbstractCegarLoop]: Abstraction has 8186 states and 13541 transitions. [2021-12-17 18:54:05,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:05,385 INFO L276 IsEmpty]: Start isEmpty. Operand 8186 states and 13541 transitions. [2021-12-17 18:54:05,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:54:05,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:05,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:05,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 18:54:05,390 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:05,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:05,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1531156726, now seen corresponding path program 1 times [2021-12-17 18:54:05,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:05,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579043152] [2021-12-17 18:54:05,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:05,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:05,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:05,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:54:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:05,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:54:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:05,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:54:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:05,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:54:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:05,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:05,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:05,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579043152] [2021-12-17 18:54:05,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579043152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:05,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:05,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:05,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536471106] [2021-12-17 18:54:05,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:05,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:05,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:05,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:05,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:05,535 INFO L87 Difference]: Start difference. First operand 8186 states and 13541 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:08,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:08,901 INFO L93 Difference]: Finished difference Result 24032 states and 39027 transitions. [2021-12-17 18:54:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:54:08,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:54:08,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:08,971 INFO L225 Difference]: With dead ends: 24032 [2021-12-17 18:54:08,971 INFO L226 Difference]: Without dead ends: 17987 [2021-12-17 18:54:08,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:54:08,996 INFO L933 BasicCegarLoop]: 4955 mSDtfsCounter, 5538 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3047 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5557 SdHoareTripleChecker+Valid, 22766 SdHoareTripleChecker+Invalid, 3133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:08,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5557 Valid, 22766 Invalid, 3133 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3047 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-17 18:54:09,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17987 states. [2021-12-17 18:54:09,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17987 to 13871. [2021-12-17 18:54:09,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 12939 states have (on average 1.6168173738310534) internal successors, (20920), 12974 states have internal predecessors, (20920), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-17 18:54:09,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 22593 transitions. [2021-12-17 18:54:09,802 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 22593 transitions. Word has length 179 [2021-12-17 18:54:09,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:09,803 INFO L470 AbstractCegarLoop]: Abstraction has 13871 states and 22593 transitions. [2021-12-17 18:54:09,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:09,803 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 22593 transitions. [2021-12-17 18:54:09,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:54:09,812 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:09,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:09,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 18:54:09,812 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:09,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:09,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1840643144, now seen corresponding path program 1 times [2021-12-17 18:54:09,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:09,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284550783] [2021-12-17 18:54:09,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:09,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:09,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:09,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:54:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:09,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:54:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:09,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:54:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:09,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:54:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:09,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:09,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:09,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284550783] [2021-12-17 18:54:09,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284550783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:09,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:09,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:09,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483685890] [2021-12-17 18:54:09,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:09,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:09,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:09,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:09,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:09,980 INFO L87 Difference]: Start difference. First operand 13871 states and 22593 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:12,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:12,431 INFO L93 Difference]: Finished difference Result 29968 states and 48786 transitions. [2021-12-17 18:54:12,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:12,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:54:12,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:12,479 INFO L225 Difference]: With dead ends: 29968 [2021-12-17 18:54:12,479 INFO L226 Difference]: Without dead ends: 18238 [2021-12-17 18:54:12,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:54:12,513 INFO L933 BasicCegarLoop]: 4597 mSDtfsCounter, 5089 mSDsluCounter, 16781 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5109 SdHoareTripleChecker+Valid, 21378 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:12,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5109 Valid, 21378 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 18:54:12,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18238 states. [2021-12-17 18:54:13,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18238 to 13871. [2021-12-17 18:54:13,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 12939 states have (on average 1.6142669448952778) internal successors, (20887), 12974 states have internal predecessors, (20887), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-17 18:54:13,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 22560 transitions. [2021-12-17 18:54:13,222 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 22560 transitions. Word has length 179 [2021-12-17 18:54:13,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:13,223 INFO L470 AbstractCegarLoop]: Abstraction has 13871 states and 22560 transitions. [2021-12-17 18:54:13,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:13,223 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 22560 transitions. [2021-12-17 18:54:13,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:54:13,232 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:13,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:13,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 18:54:13,233 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:13,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:13,235 INFO L85 PathProgramCache]: Analyzing trace with hash -2068461750, now seen corresponding path program 1 times [2021-12-17 18:54:13,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:13,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368271599] [2021-12-17 18:54:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:13,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:13,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:13,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:54:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:13,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:54:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:13,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:54:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:13,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:54:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:13,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:13,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368271599] [2021-12-17 18:54:13,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368271599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:13,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:13,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:13,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538036167] [2021-12-17 18:54:13,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:13,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:13,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:13,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:13,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:13,407 INFO L87 Difference]: Start difference. First operand 13871 states and 22560 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:15,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:15,638 INFO L93 Difference]: Finished difference Result 29934 states and 48619 transitions. [2021-12-17 18:54:15,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:15,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:54:15,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:15,701 INFO L225 Difference]: With dead ends: 29934 [2021-12-17 18:54:15,702 INFO L226 Difference]: Without dead ends: 18204 [2021-12-17 18:54:15,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:54:15,731 INFO L933 BasicCegarLoop]: 4593 mSDtfsCounter, 5087 mSDsluCounter, 16781 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5107 SdHoareTripleChecker+Valid, 21374 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:15,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5107 Valid, 21374 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1465 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 18:54:15,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18204 states. [2021-12-17 18:54:16,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18204 to 13871. [2021-12-17 18:54:16,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 12939 states have (on average 1.6117165159595024) internal successors, (20854), 12974 states have internal predecessors, (20854), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-17 18:54:16,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 22527 transitions. [2021-12-17 18:54:16,419 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 22527 transitions. Word has length 179 [2021-12-17 18:54:16,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:16,420 INFO L470 AbstractCegarLoop]: Abstraction has 13871 states and 22527 transitions. [2021-12-17 18:54:16,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:16,420 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 22527 transitions. [2021-12-17 18:54:16,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:54:16,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:16,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:16,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 18:54:16,429 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:16,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:16,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1961858056, now seen corresponding path program 1 times [2021-12-17 18:54:16,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:16,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163860800] [2021-12-17 18:54:16,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:16,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:16,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:16,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:54:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:16,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:54:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:16,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:54:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:16,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:54:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:16,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:16,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:16,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163860800] [2021-12-17 18:54:16,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163860800] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:16,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:16,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:16,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290217914] [2021-12-17 18:54:16,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:16,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:16,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:16,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:16,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:16,584 INFO L87 Difference]: Start difference. First operand 13871 states and 22527 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:20,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:20,778 INFO L93 Difference]: Finished difference Result 44807 states and 72145 transitions. [2021-12-17 18:54:20,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:54:20,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:54:20,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:20,895 INFO L225 Difference]: With dead ends: 44807 [2021-12-17 18:54:20,895 INFO L226 Difference]: Without dead ends: 33077 [2021-12-17 18:54:20,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:54:20,937 INFO L933 BasicCegarLoop]: 4938 mSDtfsCounter, 5523 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3001 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5542 SdHoareTripleChecker+Valid, 22749 SdHoareTripleChecker+Invalid, 3087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:20,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5542 Valid, 22749 Invalid, 3087 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3001 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 18:54:20,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33077 states. [2021-12-17 18:54:22,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33077 to 25338. [2021-12-17 18:54:22,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25338 states, 23510 states have (on average 1.5868991918332624) internal successors, (37308), 23577 states have internal predecessors, (37308), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-17 18:54:22,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 40843 transitions. [2021-12-17 18:54:22,180 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 40843 transitions. Word has length 179 [2021-12-17 18:54:22,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:22,180 INFO L470 AbstractCegarLoop]: Abstraction has 25338 states and 40843 transitions. [2021-12-17 18:54:22,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:22,180 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 40843 transitions. [2021-12-17 18:54:22,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:54:22,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:22,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:22,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 18:54:22,195 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:22,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:22,196 INFO L85 PathProgramCache]: Analyzing trace with hash -401983606, now seen corresponding path program 1 times [2021-12-17 18:54:22,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:22,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242553907] [2021-12-17 18:54:22,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:22,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:22,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:22,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:54:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:22,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:54:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:22,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:54:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:22,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:54:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:22,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:22,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:22,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242553907] [2021-12-17 18:54:22,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242553907] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:22,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:22,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:22,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458461437] [2021-12-17 18:54:22,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:22,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:22,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:22,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:22,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:22,344 INFO L87 Difference]: Start difference. First operand 25338 states and 40843 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:25,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:25,283 INFO L93 Difference]: Finished difference Result 56736 states and 92030 transitions. [2021-12-17 18:54:25,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:25,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:54:25,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:25,410 INFO L225 Difference]: With dead ends: 56736 [2021-12-17 18:54:25,410 INFO L226 Difference]: Without dead ends: 33539 [2021-12-17 18:54:25,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:54:25,468 INFO L933 BasicCegarLoop]: 4554 mSDtfsCounter, 5148 mSDsluCounter, 16780 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5168 SdHoareTripleChecker+Valid, 21334 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:25,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5168 Valid, 21334 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:54:25,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33539 states. [2021-12-17 18:54:27,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33539 to 25338. [2021-12-17 18:54:27,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25338 states, 23510 states have (on average 1.5841344108889834) internal successors, (37243), 23577 states have internal predecessors, (37243), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-17 18:54:27,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 40778 transitions. [2021-12-17 18:54:27,125 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 40778 transitions. Word has length 179 [2021-12-17 18:54:27,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:27,125 INFO L470 AbstractCegarLoop]: Abstraction has 25338 states and 40778 transitions. [2021-12-17 18:54:27,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:27,126 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 40778 transitions. [2021-12-17 18:54:27,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:54:27,139 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:27,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:27,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 18:54:27,139 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:27,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:27,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1725162552, now seen corresponding path program 1 times [2021-12-17 18:54:27,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:27,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486738309] [2021-12-17 18:54:27,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:27,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:27,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:27,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:54:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:27,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:54:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:27,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:54:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:27,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:54:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:27,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:27,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486738309] [2021-12-17 18:54:27,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486738309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:27,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:27,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:27,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298715073] [2021-12-17 18:54:27,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:27,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:27,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:27,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:27,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:27,283 INFO L87 Difference]: Start difference. First operand 25338 states and 40778 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:30,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:30,453 INFO L93 Difference]: Finished difference Result 56670 states and 91703 transitions. [2021-12-17 18:54:30,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:30,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:54:30,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:30,552 INFO L225 Difference]: With dead ends: 56670 [2021-12-17 18:54:30,552 INFO L226 Difference]: Without dead ends: 33473 [2021-12-17 18:54:30,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:54:30,602 INFO L933 BasicCegarLoop]: 4580 mSDtfsCounter, 5086 mSDsluCounter, 16781 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5106 SdHoareTripleChecker+Valid, 21361 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:30,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5106 Valid, 21361 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:54:30,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33473 states. [2021-12-17 18:54:32,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33473 to 25338. [2021-12-17 18:54:32,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25338 states, 23510 states have (on average 1.5813696299447044) internal successors, (37178), 23577 states have internal predecessors, (37178), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-17 18:54:32,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 40713 transitions. [2021-12-17 18:54:32,122 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 40713 transitions. Word has length 179 [2021-12-17 18:54:32,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:32,123 INFO L470 AbstractCegarLoop]: Abstraction has 25338 states and 40713 transitions. [2021-12-17 18:54:32,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:32,123 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 40713 transitions. [2021-12-17 18:54:32,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:54:32,135 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:32,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:32,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 18:54:32,136 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:32,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:32,137 INFO L85 PathProgramCache]: Analyzing trace with hash 171816906, now seen corresponding path program 1 times [2021-12-17 18:54:32,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:32,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357415850] [2021-12-17 18:54:32,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:32,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:32,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:32,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:54:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:32,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:54:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:32,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:54:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:32,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:54:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:32,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:32,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:32,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357415850] [2021-12-17 18:54:32,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357415850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:32,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:32,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:32,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477153954] [2021-12-17 18:54:32,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:32,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:32,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:32,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:32,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:32,288 INFO L87 Difference]: Start difference. First operand 25338 states and 40713 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:35,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:35,595 INFO L93 Difference]: Finished difference Result 56538 states and 91244 transitions. [2021-12-17 18:54:35,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:35,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:54:35,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:35,691 INFO L225 Difference]: With dead ends: 56538 [2021-12-17 18:54:35,692 INFO L226 Difference]: Without dead ends: 33341 [2021-12-17 18:54:35,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:54:35,739 INFO L933 BasicCegarLoop]: 4574 mSDtfsCounter, 5081 mSDsluCounter, 16779 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5101 SdHoareTripleChecker+Valid, 21353 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:35,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5101 Valid, 21353 Invalid, 1509 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [94 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:54:35,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33341 states. [2021-12-17 18:54:37,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33341 to 25338. [2021-12-17 18:54:37,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25338 states, 23510 states have (on average 1.5786048490004254) internal successors, (37113), 23577 states have internal predecessors, (37113), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-17 18:54:37,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 40648 transitions. [2021-12-17 18:54:37,245 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 40648 transitions. Word has length 179 [2021-12-17 18:54:37,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:37,245 INFO L470 AbstractCegarLoop]: Abstraction has 25338 states and 40648 transitions. [2021-12-17 18:54:37,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:37,245 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 40648 transitions. [2021-12-17 18:54:37,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:54:37,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:37,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:37,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 18:54:37,258 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:37,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:37,259 INFO L85 PathProgramCache]: Analyzing trace with hash 598371404, now seen corresponding path program 1 times [2021-12-17 18:54:37,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:37,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065685748] [2021-12-17 18:54:37,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:37,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:37,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:37,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:54:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:37,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:54:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:37,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:54:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:37,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:54:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:37,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:37,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:37,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065685748] [2021-12-17 18:54:37,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065685748] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:37,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:37,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:37,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373360596] [2021-12-17 18:54:37,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:37,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:37,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:37,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:37,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:37,413 INFO L87 Difference]: Start difference. First operand 25338 states and 40648 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:45,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:45,905 INFO L93 Difference]: Finished difference Result 96792 states and 154353 transitions. [2021-12-17 18:54:45,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 18:54:45,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:54:45,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:46,117 INFO L225 Difference]: With dead ends: 96792 [2021-12-17 18:54:46,117 INFO L226 Difference]: Without dead ends: 73595 [2021-12-17 18:54:46,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 18:54:46,182 INFO L933 BasicCegarLoop]: 5094 mSDtfsCounter, 5612 mSDsluCounter, 17800 mSDsCounter, 0 mSdLazyCounter, 3464 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5630 SdHoareTripleChecker+Valid, 22894 SdHoareTripleChecker+Invalid, 3555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:46,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5630 Valid, 22894 Invalid, 3555 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 3464 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-17 18:54:46,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73595 states. [2021-12-17 18:54:48,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73595 to 47887. [2021-12-17 18:54:48,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47887 states, 44331 states have (on average 1.5614130066996008) internal successors, (69219), 44462 states have internal predecessors, (69219), 2652 states have call successors, (2652), 775 states have call predecessors, (2652), 902 states have return successors, (4965), 2777 states have call predecessors, (4965), 2650 states have call successors, (4965) [2021-12-17 18:54:49,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47887 states to 47887 states and 76836 transitions. [2021-12-17 18:54:49,328 INFO L78 Accepts]: Start accepts. Automaton has 47887 states and 76836 transitions. Word has length 179 [2021-12-17 18:54:49,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:49,328 INFO L470 AbstractCegarLoop]: Abstraction has 47887 states and 76836 transitions. [2021-12-17 18:54:49,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:49,329 INFO L276 IsEmpty]: Start isEmpty. Operand 47887 states and 76836 transitions. [2021-12-17 18:54:49,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:54:49,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:49,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:49,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 18:54:49,349 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:49,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:49,349 INFO L85 PathProgramCache]: Analyzing trace with hash 57941898, now seen corresponding path program 1 times [2021-12-17 18:54:49,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:49,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15025305] [2021-12-17 18:54:49,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:49,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:49,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:49,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:49,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:54:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:49,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:54:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:49,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:54:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:49,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:54:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:49,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:49,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15025305] [2021-12-17 18:54:49,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15025305] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:49,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:49,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:49,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635553020] [2021-12-17 18:54:49,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:49,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:49,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:49,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:49,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:49,515 INFO L87 Difference]: Start difference. First operand 47887 states and 76836 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:54,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:54,894 INFO L93 Difference]: Finished difference Result 108736 states and 176331 transitions. [2021-12-17 18:54:54,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:54,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2021-12-17 18:54:54,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:55,075 INFO L225 Difference]: With dead ends: 108736 [2021-12-17 18:54:55,075 INFO L226 Difference]: Without dead ends: 62990 [2021-12-17 18:54:55,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:54:55,277 INFO L933 BasicCegarLoop]: 4567 mSDtfsCounter, 5247 mSDsluCounter, 12623 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5267 SdHoareTripleChecker+Valid, 17190 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:55,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5267 Valid, 17190 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:54:55,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62990 states. [2021-12-17 18:54:58,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62990 to 47887. [2021-12-17 18:54:58,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47887 states, 44331 states have (on average 1.5585030791094268) internal successors, (69090), 44462 states have internal predecessors, (69090), 2652 states have call successors, (2652), 775 states have call predecessors, (2652), 902 states have return successors, (4965), 2777 states have call predecessors, (4965), 2650 states have call successors, (4965) [2021-12-17 18:54:58,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47887 states to 47887 states and 76707 transitions. [2021-12-17 18:54:58,326 INFO L78 Accepts]: Start accepts. Automaton has 47887 states and 76707 transitions. Word has length 179 [2021-12-17 18:54:58,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:58,327 INFO L470 AbstractCegarLoop]: Abstraction has 47887 states and 76707 transitions. [2021-12-17 18:54:58,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:58,327 INFO L276 IsEmpty]: Start isEmpty. Operand 47887 states and 76707 transitions. [2021-12-17 18:54:58,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 18:54:58,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:58,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:58,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 18:54:58,344 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:58,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:58,344 INFO L85 PathProgramCache]: Analyzing trace with hash -98038644, now seen corresponding path program 1 times [2021-12-17 18:54:58,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:58,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045973677] [2021-12-17 18:54:58,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:58,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:58,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:58,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 18:54:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:58,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 18:54:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:58,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 18:54:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:58,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 18:54:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:58,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:58,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045973677] [2021-12-17 18:54:58,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045973677] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:58,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:58,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:58,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115227593] [2021-12-17 18:54:58,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:58,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:58,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:58,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:58,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:58,500 INFO L87 Difference]: Start difference. First operand 47887 states and 76707 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)