/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:10:59,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:10:59,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:10:59,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:10:59,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:10:59,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:10:59,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:10:59,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:10:59,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:10:59,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:10:59,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:10:59,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:10:59,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:10:59,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:10:59,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:10:59,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:10:59,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:10:59,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:10:59,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:10:59,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:10:59,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:10:59,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:10:59,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:10:59,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:10:59,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:10:59,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:10:59,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:10:59,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:10:59,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:10:59,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:10:59,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:10:59,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:10:59,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:10:59,375 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:10:59,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:10:59,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:10:59,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:10:59,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:10:59,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:10:59,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:10:59,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:10:59,379 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:10:59,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:10:59,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:10:59,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:10:59,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:10:59,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:10:59,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:10:59,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:10:59,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:10:59,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:10:59,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:10:59,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:10:59,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:10:59,383 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:10:59,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:10:59,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:10:59,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:10:59,852 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:10:59,853 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:10:59,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 09:10:59,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/446ec9adc/4a32450669704275b7c4033bdfeec770/FLAGe89c2b33c [2020-12-22 09:11:00,849 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:11:00,850 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 09:11:00,887 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/446ec9adc/4a32450669704275b7c4033bdfeec770/FLAGe89c2b33c [2020-12-22 09:11:00,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/446ec9adc/4a32450669704275b7c4033bdfeec770 [2020-12-22 09:11:00,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:11:00,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:11:00,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:11:00,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:11:00,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:11:00,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:11:00" (1/1) ... [2020-12-22 09:11:00,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4515b415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:00, skipping insertion in model container [2020-12-22 09:11:00,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:11:00" (1/1) ... [2020-12-22 09:11:00,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:11:01,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:11:01,786 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[39075,39088] [2020-12-22 09:11:02,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:11:02,219 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:11:02,552 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[39075,39088] [2020-12-22 09:11:02,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:11:02,978 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:11:02,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:02 WrapperNode [2020-12-22 09:11:02,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:11:02,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:11:02,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:11:02,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:11:02,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:02" (1/1) ... [2020-12-22 09:11:03,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:02" (1/1) ... [2020-12-22 09:11:03,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:11:03,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:11:03,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:11:03,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:11:03,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:02" (1/1) ... [2020-12-22 09:11:03,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:02" (1/1) ... [2020-12-22 09:11:03,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:02" (1/1) ... [2020-12-22 09:11:03,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:02" (1/1) ... [2020-12-22 09:11:03,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:02" (1/1) ... [2020-12-22 09:11:03,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:02" (1/1) ... [2020-12-22 09:11:03,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:02" (1/1) ... [2020-12-22 09:11:03,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:11:03,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:11:03,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:11:03,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:11:03,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:11:03,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:11:03,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:11:03,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:11:03,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:11:08,038 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:11:08,038 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:11:08,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:11:08 BoogieIcfgContainer [2020-12-22 09:11:08,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:11:08,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:11:08,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:11:08,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:11:08,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:11:00" (1/3) ... [2020-12-22 09:11:08,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616ce097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:11:08, skipping insertion in model container [2020-12-22 09:11:08,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:11:02" (2/3) ... [2020-12-22 09:11:08,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616ce097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:11:08, skipping insertion in model container [2020-12-22 09:11:08,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:11:08" (3/3) ... [2020-12-22 09:11:08,052 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 09:11:08,059 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:11:08,067 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 09:11:08,088 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 09:11:08,131 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:11:08,132 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:11:08,132 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:11:08,132 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:11:08,132 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:11:08,132 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:11:08,132 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:11:08,132 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:11:08,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states. [2020-12-22 09:11:08,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-12-22 09:11:08,232 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:08,234 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:11:08,234 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:08,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:08,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1613009937, now seen corresponding path program 1 times [2020-12-22 09:11:08,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:08,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719205888] [2020-12-22 09:11:08,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:09,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:11:09,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719205888] [2020-12-22 09:11:09,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:09,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:11:09,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762469811] [2020-12-22 09:11:09,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:11:09,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:09,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:11:09,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:09,500 INFO L87 Difference]: Start difference. First operand 1524 states. Second operand 3 states. [2020-12-22 09:11:09,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:09,819 INFO L93 Difference]: Finished difference Result 3048 states and 5320 transitions. [2020-12-22 09:11:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:11:09,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 372 [2020-12-22 09:11:09,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:09,878 INFO L225 Difference]: With dead ends: 3048 [2020-12-22 09:11:09,878 INFO L226 Difference]: Without dead ends: 2112 [2020-12-22 09:11:09,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:09,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2020-12-22 09:11:10,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 2110. [2020-12-22 09:11:10,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2110 states. [2020-12-22 09:11:10,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 3541 transitions. [2020-12-22 09:11:10,067 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 3541 transitions. Word has length 372 [2020-12-22 09:11:10,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:10,068 INFO L481 AbstractCegarLoop]: Abstraction has 2110 states and 3541 transitions. [2020-12-22 09:11:10,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:11:10,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 3541 transitions. [2020-12-22 09:11:10,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-12-22 09:11:10,080 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:10,080 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:11:10,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:11:10,081 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:10,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:10,082 INFO L82 PathProgramCache]: Analyzing trace with hash 493525477, now seen corresponding path program 1 times [2020-12-22 09:11:10,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:10,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723032071] [2020-12-22 09:11:10,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:11:10,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723032071] [2020-12-22 09:11:10,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:10,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:11:10,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936093049] [2020-12-22 09:11:10,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:11:10,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:10,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:11:10,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:10,716 INFO L87 Difference]: Start difference. First operand 2110 states and 3541 transitions. Second operand 3 states. [2020-12-22 09:11:10,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:10,976 INFO L93 Difference]: Finished difference Result 4486 states and 7428 transitions. [2020-12-22 09:11:10,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:11:10,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 372 [2020-12-22 09:11:10,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:11,000 INFO L225 Difference]: With dead ends: 4486 [2020-12-22 09:11:11,000 INFO L226 Difference]: Without dead ends: 3036 [2020-12-22 09:11:11,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:11,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3036 states. [2020-12-22 09:11:11,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3036 to 3034. [2020-12-22 09:11:11,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3034 states. [2020-12-22 09:11:11,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 5042 transitions. [2020-12-22 09:11:11,164 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 5042 transitions. Word has length 372 [2020-12-22 09:11:11,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:11,166 INFO L481 AbstractCegarLoop]: Abstraction has 3034 states and 5042 transitions. [2020-12-22 09:11:11,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:11:11,167 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 5042 transitions. [2020-12-22 09:11:11,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-12-22 09:11:11,180 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:11,180 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:11:11,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:11:11,181 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:11,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:11,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1929060325, now seen corresponding path program 1 times [2020-12-22 09:11:11,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:11,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056570000] [2020-12-22 09:11:11,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:12,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:11:12,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056570000] [2020-12-22 09:11:12,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:12,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:11:12,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120838604] [2020-12-22 09:11:12,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:11:12,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:12,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:11:12,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:11:12,210 INFO L87 Difference]: Start difference. First operand 3034 states and 5042 transitions. Second operand 7 states. [2020-12-22 09:11:13,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:13,759 INFO L93 Difference]: Finished difference Result 10812 states and 18241 transitions. [2020-12-22 09:11:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 09:11:13,760 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 372 [2020-12-22 09:11:13,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:13,818 INFO L225 Difference]: With dead ends: 10812 [2020-12-22 09:11:13,818 INFO L226 Difference]: Without dead ends: 10090 [2020-12-22 09:11:13,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-12-22 09:11:13,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10090 states. [2020-12-22 09:11:14,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10090 to 4090. [2020-12-22 09:11:14,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4090 states. [2020-12-22 09:11:14,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4090 states to 4090 states and 6814 transitions. [2020-12-22 09:11:14,307 INFO L78 Accepts]: Start accepts. Automaton has 4090 states and 6814 transitions. Word has length 372 [2020-12-22 09:11:14,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:14,308 INFO L481 AbstractCegarLoop]: Abstraction has 4090 states and 6814 transitions. [2020-12-22 09:11:14,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:11:14,308 INFO L276 IsEmpty]: Start isEmpty. Operand 4090 states and 6814 transitions. [2020-12-22 09:11:14,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-12-22 09:11:14,321 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:14,321 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:11:14,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:11:14,322 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:14,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:14,323 INFO L82 PathProgramCache]: Analyzing trace with hash -355152036, now seen corresponding path program 1 times [2020-12-22 09:11:14,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:14,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553792466] [2020-12-22 09:11:14,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:11:14,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553792466] [2020-12-22 09:11:14,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:14,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:11:14,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350525388] [2020-12-22 09:11:14,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:11:14,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:14,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:11:14,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:11:14,783 INFO L87 Difference]: Start difference. First operand 4090 states and 6814 transitions. Second operand 4 states. [2020-12-22 09:11:15,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:15,398 INFO L93 Difference]: Finished difference Result 9092 states and 15269 transitions. [2020-12-22 09:11:15,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:11:15,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 373 [2020-12-22 09:11:15,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:15,469 INFO L225 Difference]: With dead ends: 9092 [2020-12-22 09:11:15,469 INFO L226 Difference]: Without dead ends: 7650 [2020-12-22 09:11:15,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:11:15,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7650 states. [2020-12-22 09:11:15,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7650 to 6026. [2020-12-22 09:11:15,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6026 states. [2020-12-22 09:11:15,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 10066 transitions. [2020-12-22 09:11:15,934 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 10066 transitions. Word has length 373 [2020-12-22 09:11:15,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:15,935 INFO L481 AbstractCegarLoop]: Abstraction has 6026 states and 10066 transitions. [2020-12-22 09:11:15,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:11:15,935 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 10066 transitions. [2020-12-22 09:11:15,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-12-22 09:11:15,952 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:15,952 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:11:15,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:11:15,953 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:15,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:15,955 INFO L82 PathProgramCache]: Analyzing trace with hash 816211433, now seen corresponding path program 1 times [2020-12-22 09:11:15,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:15,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001154164] [2020-12-22 09:11:15,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:16,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:11:16,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001154164] [2020-12-22 09:11:16,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:16,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:11:16,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472978988] [2020-12-22 09:11:16,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:11:16,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:16,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:11:16,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:11:16,642 INFO L87 Difference]: Start difference. First operand 6026 states and 10066 transitions. Second operand 7 states. [2020-12-22 09:11:18,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:18,377 INFO L93 Difference]: Finished difference Result 19242 states and 32446 transitions. [2020-12-22 09:11:18,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:11:18,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 374 [2020-12-22 09:11:18,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:18,431 INFO L225 Difference]: With dead ends: 19242 [2020-12-22 09:11:18,432 INFO L226 Difference]: Without dead ends: 17800 [2020-12-22 09:11:18,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:11:18,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17800 states. [2020-12-22 09:11:19,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17800 to 8354. [2020-12-22 09:11:19,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8354 states. [2020-12-22 09:11:19,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8354 states to 8354 states and 13998 transitions. [2020-12-22 09:11:19,291 INFO L78 Accepts]: Start accepts. Automaton has 8354 states and 13998 transitions. Word has length 374 [2020-12-22 09:11:19,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:19,292 INFO L481 AbstractCegarLoop]: Abstraction has 8354 states and 13998 transitions. [2020-12-22 09:11:19,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:11:19,292 INFO L276 IsEmpty]: Start isEmpty. Operand 8354 states and 13998 transitions. [2020-12-22 09:11:19,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-12-22 09:11:19,311 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:19,311 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:11:19,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:11:19,312 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:19,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:19,313 INFO L82 PathProgramCache]: Analyzing trace with hash -680467245, now seen corresponding path program 1 times [2020-12-22 09:11:19,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:19,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452920988] [2020-12-22 09:11:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:19,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:11:19,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452920988] [2020-12-22 09:11:19,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:19,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:11:19,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957683501] [2020-12-22 09:11:19,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:11:19,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:19,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:11:19,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:11:19,812 INFO L87 Difference]: Start difference. First operand 8354 states and 13998 transitions. Second operand 7 states. [2020-12-22 09:11:21,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:21,621 INFO L93 Difference]: Finished difference Result 22286 states and 37594 transitions. [2020-12-22 09:11:21,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:11:21,622 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 374 [2020-12-22 09:11:21,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:21,676 INFO L225 Difference]: With dead ends: 22286 [2020-12-22 09:11:21,677 INFO L226 Difference]: Without dead ends: 19412 [2020-12-22 09:11:21,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:11:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19412 states. [2020-12-22 09:11:22,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19412 to 12118. [2020-12-22 09:11:22,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12118 states. [2020-12-22 09:11:22,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12118 states to 12118 states and 20362 transitions. [2020-12-22 09:11:22,796 INFO L78 Accepts]: Start accepts. Automaton has 12118 states and 20362 transitions. Word has length 374 [2020-12-22 09:11:22,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:22,797 INFO L481 AbstractCegarLoop]: Abstraction has 12118 states and 20362 transitions. [2020-12-22 09:11:22,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:11:22,798 INFO L276 IsEmpty]: Start isEmpty. Operand 12118 states and 20362 transitions. [2020-12-22 09:11:22,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-12-22 09:11:22,811 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:22,811 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:11:22,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:11:22,812 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:22,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:22,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1028241981, now seen corresponding path program 1 times [2020-12-22 09:11:22,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:22,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945936782] [2020-12-22 09:11:22,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:11:23,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945936782] [2020-12-22 09:11:23,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:23,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:11:23,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275739633] [2020-12-22 09:11:23,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:11:23,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:23,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:11:23,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:11:23,476 INFO L87 Difference]: Start difference. First operand 12118 states and 20362 transitions. Second operand 7 states. [2020-12-22 09:11:25,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:25,463 INFO L93 Difference]: Finished difference Result 25250 states and 42604 transitions. [2020-12-22 09:11:25,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:11:25,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 374 [2020-12-22 09:11:25,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:25,510 INFO L225 Difference]: With dead ends: 25250 [2020-12-22 09:11:25,510 INFO L226 Difference]: Without dead ends: 22376 [2020-12-22 09:11:25,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:11:25,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22376 states. [2020-12-22 09:11:26,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22376 to 15130. [2020-12-22 09:11:26,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15130 states. [2020-12-22 09:11:26,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15130 states to 15130 states and 25447 transitions. [2020-12-22 09:11:26,565 INFO L78 Accepts]: Start accepts. Automaton has 15130 states and 25447 transitions. Word has length 374 [2020-12-22 09:11:26,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:26,566 INFO L481 AbstractCegarLoop]: Abstraction has 15130 states and 25447 transitions. [2020-12-22 09:11:26,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:11:26,566 INFO L276 IsEmpty]: Start isEmpty. Operand 15130 states and 25447 transitions. [2020-12-22 09:11:26,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-12-22 09:11:26,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:26,581 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:11:26,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:11:26,582 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:26,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:26,583 INFO L82 PathProgramCache]: Analyzing trace with hash -872159705, now seen corresponding path program 1 times [2020-12-22 09:11:26,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:26,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452907761] [2020-12-22 09:11:26,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:11:27,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452907761] [2020-12-22 09:11:27,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:27,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:11:27,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20077403] [2020-12-22 09:11:27,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:11:27,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:27,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:11:27,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:11:27,168 INFO L87 Difference]: Start difference. First operand 15130 states and 25447 transitions. Second operand 7 states. [2020-12-22 09:11:29,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:29,008 INFO L93 Difference]: Finished difference Result 28130 states and 47476 transitions. [2020-12-22 09:11:29,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:11:29,009 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 374 [2020-12-22 09:11:29,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:29,055 INFO L225 Difference]: With dead ends: 28130 [2020-12-22 09:11:29,055 INFO L226 Difference]: Without dead ends: 25256 [2020-12-22 09:11:29,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:11:29,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25256 states. [2020-12-22 09:11:30,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25256 to 18010. [2020-12-22 09:11:30,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18010 states. [2020-12-22 09:11:30,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18010 states to 18010 states and 30319 transitions. [2020-12-22 09:11:30,626 INFO L78 Accepts]: Start accepts. Automaton has 18010 states and 30319 transitions. Word has length 374 [2020-12-22 09:11:30,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:30,627 INFO L481 AbstractCegarLoop]: Abstraction has 18010 states and 30319 transitions. [2020-12-22 09:11:30,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:11:30,627 INFO L276 IsEmpty]: Start isEmpty. Operand 18010 states and 30319 transitions. [2020-12-22 09:11:30,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-12-22 09:11:30,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:30,641 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:11:30,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:11:30,642 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:30,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:30,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1195922690, now seen corresponding path program 1 times [2020-12-22 09:11:30,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:30,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544286190] [2020-12-22 09:11:30,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:11:31,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544286190] [2020-12-22 09:11:31,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:31,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:11:31,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328949250] [2020-12-22 09:11:31,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:11:31,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:31,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:11:31,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:11:31,119 INFO L87 Difference]: Start difference. First operand 18010 states and 30319 transitions. Second operand 4 states. [2020-12-22 09:11:33,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:33,137 INFO L93 Difference]: Finished difference Result 47308 states and 79917 transitions. [2020-12-22 09:11:33,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:11:33,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 374 [2020-12-22 09:11:33,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:33,199 INFO L225 Difference]: With dead ends: 47308 [2020-12-22 09:11:33,200 INFO L226 Difference]: Without dead ends: 32942 [2020-12-22 09:11:33,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:11:33,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32942 states. [2020-12-22 09:11:35,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32942 to 29986. [2020-12-22 09:11:35,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29986 states. [2020-12-22 09:11:35,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29986 states to 29986 states and 50503 transitions. [2020-12-22 09:11:35,331 INFO L78 Accepts]: Start accepts. Automaton has 29986 states and 50503 transitions. Word has length 374 [2020-12-22 09:11:35,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:35,331 INFO L481 AbstractCegarLoop]: Abstraction has 29986 states and 50503 transitions. [2020-12-22 09:11:35,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:11:35,332 INFO L276 IsEmpty]: Start isEmpty. Operand 29986 states and 50503 transitions. [2020-12-22 09:11:35,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-12-22 09:11:35,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:35,346 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:11:35,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:11:35,346 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:35,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:35,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1916738941, now seen corresponding path program 1 times [2020-12-22 09:11:35,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:35,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726285101] [2020-12-22 09:11:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:11:35,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726285101] [2020-12-22 09:11:35,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:35,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:11:35,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931617806] [2020-12-22 09:11:35,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:11:35,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:35,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:11:35,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:35,641 INFO L87 Difference]: Start difference. First operand 29986 states and 50503 transitions. Second operand 3 states. [2020-12-22 09:11:39,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:39,301 INFO L93 Difference]: Finished difference Result 64638 states and 108902 transitions. [2020-12-22 09:11:39,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:11:39,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 375 [2020-12-22 09:11:39,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:39,377 INFO L225 Difference]: With dead ends: 64638 [2020-12-22 09:11:39,378 INFO L226 Difference]: Without dead ends: 49474 [2020-12-22 09:11:39,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:39,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49474 states. [2020-12-22 09:11:42,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49474 to 49408. [2020-12-22 09:11:42,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49408 states. [2020-12-22 09:11:43,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49408 states to 49408 states and 83114 transitions. [2020-12-22 09:11:43,050 INFO L78 Accepts]: Start accepts. Automaton has 49408 states and 83114 transitions. Word has length 375 [2020-12-22 09:11:43,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:43,050 INFO L481 AbstractCegarLoop]: Abstraction has 49408 states and 83114 transitions. [2020-12-22 09:11:43,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:11:43,051 INFO L276 IsEmpty]: Start isEmpty. Operand 49408 states and 83114 transitions. [2020-12-22 09:11:43,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-12-22 09:11:43,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:43,065 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:11:43,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:11:43,066 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:43,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:43,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1151073458, now seen corresponding path program 1 times [2020-12-22 09:11:43,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:43,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701867611] [2020-12-22 09:11:43,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:43,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:11:43,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701867611] [2020-12-22 09:11:43,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:43,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:11:43,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829294005] [2020-12-22 09:11:43,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:11:43,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:43,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:11:43,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:11:43,803 INFO L87 Difference]: Start difference. First operand 49408 states and 83114 transitions. Second operand 4 states. [2020-12-22 09:11:47,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:47,825 INFO L93 Difference]: Finished difference Result 72470 states and 122173 transitions. [2020-12-22 09:11:47,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:11:47,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 375 [2020-12-22 09:11:47,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:47,914 INFO L225 Difference]: With dead ends: 72470 [2020-12-22 09:11:47,914 INFO L226 Difference]: Without dead ends: 60980 [2020-12-22 09:11:47,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:11:48,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60980 states. [2020-12-22 09:11:52,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60980 to 55174. [2020-12-22 09:11:52,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55174 states. [2020-12-22 09:11:52,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55174 states to 55174 states and 92861 transitions. [2020-12-22 09:11:52,377 INFO L78 Accepts]: Start accepts. Automaton has 55174 states and 92861 transitions. Word has length 375 [2020-12-22 09:11:52,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:52,378 INFO L481 AbstractCegarLoop]: Abstraction has 55174 states and 92861 transitions. [2020-12-22 09:11:52,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:11:52,378 INFO L276 IsEmpty]: Start isEmpty. Operand 55174 states and 92861 transitions. [2020-12-22 09:11:52,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-12-22 09:11:52,393 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:52,394 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:11:52,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:11:52,394 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:52,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:52,395 INFO L82 PathProgramCache]: Analyzing trace with hash 2039156963, now seen corresponding path program 1 times [2020-12-22 09:11:52,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:52,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916510326] [2020-12-22 09:11:52,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:52,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:11:52,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916510326] [2020-12-22 09:11:52,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:52,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:11:52,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965882989] [2020-12-22 09:11:52,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:11:52,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:52,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:11:52,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:11:52,795 INFO L87 Difference]: Start difference. First operand 55174 states and 92861 transitions. Second operand 4 states. [2020-12-22 09:12:01,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:12:01,050 INFO L93 Difference]: Finished difference Result 156476 states and 264027 transitions. [2020-12-22 09:12:01,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:12:01,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 375 [2020-12-22 09:12:01,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:12:01,400 INFO L225 Difference]: With dead ends: 156476 [2020-12-22 09:12:01,401 INFO L226 Difference]: Without dead ends: 107656 [2020-12-22 09:12:01,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:12:01,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107656 states. [2020-12-22 09:12:08,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107656 to 95886. [2020-12-22 09:12:08,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95886 states. [2020-12-22 09:12:08,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95886 states to 95886 states and 161315 transitions. [2020-12-22 09:12:08,979 INFO L78 Accepts]: Start accepts. Automaton has 95886 states and 161315 transitions. Word has length 375 [2020-12-22 09:12:08,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:12:08,980 INFO L481 AbstractCegarLoop]: Abstraction has 95886 states and 161315 transitions. [2020-12-22 09:12:08,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:12:08,980 INFO L276 IsEmpty]: Start isEmpty. Operand 95886 states and 161315 transitions. [2020-12-22 09:12:09,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-12-22 09:12:09,004 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:12:09,005 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:12:09,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:12:09,005 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:12:09,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:12:09,006 INFO L82 PathProgramCache]: Analyzing trace with hash 335011415, now seen corresponding path program 1 times [2020-12-22 09:12:09,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:12:09,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300963514] [2020-12-22 09:12:09,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:12:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:12:09,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:12:09,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300963514] [2020-12-22 09:12:09,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:12:09,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:12:09,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737736928] [2020-12-22 09:12:09,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:12:09,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:12:09,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:12:09,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:09,547 INFO L87 Difference]: Start difference. First operand 95886 states and 161315 transitions. Second operand 3 states. [2020-12-22 09:12:23,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:12:23,486 INFO L93 Difference]: Finished difference Result 285647 states and 480475 transitions. [2020-12-22 09:12:23,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:12:23,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 376 [2020-12-22 09:12:23,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:12:23,857 INFO L225 Difference]: With dead ends: 285647 [2020-12-22 09:12:23,857 INFO L226 Difference]: Without dead ends: 189866 [2020-12-22 09:12:23,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:24,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189866 states. [2020-12-22 09:12:38,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189866 to 189864. [2020-12-22 09:12:38,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189864 states. [2020-12-22 09:12:39,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189864 states to 189864 states and 318568 transitions. [2020-12-22 09:12:39,127 INFO L78 Accepts]: Start accepts. Automaton has 189864 states and 318568 transitions. Word has length 376 [2020-12-22 09:12:39,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:12:39,127 INFO L481 AbstractCegarLoop]: Abstraction has 189864 states and 318568 transitions. [2020-12-22 09:12:39,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:12:39,128 INFO L276 IsEmpty]: Start isEmpty. Operand 189864 states and 318568 transitions. [2020-12-22 09:12:39,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-12-22 09:12:39,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:12:39,504 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:12:39,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:12:39,505 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:12:39,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:12:39,506 INFO L82 PathProgramCache]: Analyzing trace with hash -222992691, now seen corresponding path program 1 times [2020-12-22 09:12:39,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:12:39,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306272640] [2020-12-22 09:12:39,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:12:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:12:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:12:39,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306272640] [2020-12-22 09:12:39,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:12:39,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:12:39,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108124590] [2020-12-22 09:12:39,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:12:39,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:12:39,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:12:39,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:12:39,825 INFO L87 Difference]: Start difference. First operand 189864 states and 318568 transitions. Second operand 3 states. [2020-12-22 09:13:07,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:07,737 INFO L93 Difference]: Finished difference Result 562961 states and 944635 transitions. [2020-12-22 09:13:07,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:07,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 376 [2020-12-22 09:13:07,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:08,689 INFO L225 Difference]: With dead ends: 562961 [2020-12-22 09:13:08,690 INFO L226 Difference]: Without dead ends: 373238 [2020-12-22 09:13:08,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:09,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373238 states. [2020-12-22 09:13:38,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373238 to 373236. [2020-12-22 09:13:38,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373236 states. [2020-12-22 09:13:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373236 states to 373236 states and 624198 transitions. [2020-12-22 09:13:39,706 INFO L78 Accepts]: Start accepts. Automaton has 373236 states and 624198 transitions. Word has length 376 [2020-12-22 09:13:39,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:39,707 INFO L481 AbstractCegarLoop]: Abstraction has 373236 states and 624198 transitions. [2020-12-22 09:13:39,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:39,707 INFO L276 IsEmpty]: Start isEmpty. Operand 373236 states and 624198 transitions. [2020-12-22 09:13:39,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-12-22 09:13:39,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:39,779 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:13:39,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:13:39,780 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:39,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:39,781 INFO L82 PathProgramCache]: Analyzing trace with hash 852422231, now seen corresponding path program 1 times [2020-12-22 09:13:39,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:39,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338183114] [2020-12-22 09:13:39,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:40,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:13:40,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338183114] [2020-12-22 09:13:40,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:40,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:40,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247565018] [2020-12-22 09:13:40,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:40,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:40,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:40,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:40,694 INFO L87 Difference]: Start difference. First operand 373236 states and 624198 transitions. Second operand 3 states.