/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_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:13:37,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:13:37,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:13:37,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:13:37,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:13:37,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:13:37,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:13:37,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:13:37,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:13:37,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:13:37,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:13:37,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:13:37,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:13:37,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:13:37,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:13:37,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:13:37,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:13:37,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:13:37,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:13:37,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:13:37,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:13:37,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:13:37,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:13:37,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:13:37,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:13:37,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:13:37,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:13:37,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:13:37,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:13:37,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:13:37,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:13:37,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:13:37,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:13:37,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:13:37,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:13:37,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:13:37,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:13:37,463 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:13:37,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:13:37,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:13:37,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:13:37,467 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:13:37,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:13:37,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:13:37,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:13:37,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:13:37,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:13:37,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:13:37,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:13:37,470 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:13:37,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:13:37,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:13:37,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:13:37,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:13:37,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:13:37,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:13:37,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:13:37,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:13:37,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:13:37,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:13:37,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:13:37,473 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:13:37,473 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:13:37,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:13:37,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:13:37,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:13:37,962 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:13:37,963 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:13:37,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:13:38,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ae1672d/028c524268014b68b8d2c7ac0fd4029e/FLAG0214b945b [2020-12-22 08:13:38,950 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:13:38,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:13:38,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ae1672d/028c524268014b68b8d2c7ac0fd4029e/FLAG0214b945b [2020-12-22 08:13:39,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6ae1672d/028c524268014b68b8d2c7ac0fd4029e [2020-12-22 08:13:39,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:13:39,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:13:39,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:13:39,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:13:39,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:13:39,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:13:39" (1/1) ... [2020-12-22 08:13:39,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c6b1df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:13:39, skipping insertion in model container [2020-12-22 08:13:39,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:13:39" (1/1) ... [2020-12-22 08:13:39,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:13:39,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:13:40,179 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_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[49609,49622] [2020-12-22 08:13:40,316 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_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[55371,55384] [2020-12-22 08:13:40,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:13:40,684 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:13:41,196 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_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[49609,49622] [2020-12-22 08:13:41,333 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_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[55371,55384] [2020-12-22 08:13:41,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:13:41,683 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:13:41,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:13:41 WrapperNode [2020-12-22 08:13:41,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:13:41,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:13:41,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:13:41,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:13:41,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:13:41" (1/1) ... [2020-12-22 08:13:41,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:13:41" (1/1) ... [2020-12-22 08:13:41,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:13:41,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:13:41,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:13:41,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:13:41,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:13:41" (1/1) ... [2020-12-22 08:13:41,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:13:41" (1/1) ... [2020-12-22 08:13:41,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:13:41" (1/1) ... [2020-12-22 08:13:41,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:13:41" (1/1) ... [2020-12-22 08:13:42,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:13:41" (1/1) ... [2020-12-22 08:13:42,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:13:41" (1/1) ... [2020-12-22 08:13:42,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:13:41" (1/1) ... [2020-12-22 08:13:42,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:13:42,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:13:42,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:13:42,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:13:42,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:13:41" (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 08:13:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:13:42,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:13:42,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:13:42,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:13:46,741 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:13:46,741 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:13:46,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:13:46 BoogieIcfgContainer [2020-12-22 08:13:46,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:13:46,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:13:46,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:13:46,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:13:46,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:13:39" (1/3) ... [2020-12-22 08:13:46,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c417e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:13:46, skipping insertion in model container [2020-12-22 08:13:46,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:13:41" (2/3) ... [2020-12-22 08:13:46,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c417e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:13:46, skipping insertion in model container [2020-12-22 08:13:46,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:13:46" (3/3) ... [2020-12-22 08:13:46,755 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:13:46,762 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:13:46,769 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 08:13:46,788 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 08:13:46,825 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:13:46,825 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:13:46,825 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:13:46,825 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:13:46,825 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:13:46,826 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:13:46,826 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:13:46,826 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:13:46,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states. [2020-12-22 08:13:46,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-12-22 08:13:46,928 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:13:46,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:46,935 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:13:46,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:13:46,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1926959771, now seen corresponding path program 1 times [2020-12-22 08:13:46,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:13:46,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459851080] [2020-12-22 08:13:46,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:13:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:13:49,467 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 08:13:49,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459851080] [2020-12-22 08:13:49,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:13:49,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:13:49,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963005383] [2020-12-22 08:13:49,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:13:49,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:13:49,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:13:49,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:13:49,501 INFO L87 Difference]: Start difference. First operand 1388 states. Second operand 4 states. [2020-12-22 08:13:50,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:13:50,021 INFO L93 Difference]: Finished difference Result 4118 states and 7460 transitions. [2020-12-22 08:13:50,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:13:50,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 469 [2020-12-22 08:13:50,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:13:50,071 INFO L225 Difference]: With dead ends: 4118 [2020-12-22 08:13:50,071 INFO L226 Difference]: Without dead ends: 2737 [2020-12-22 08:13:50,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 08:13:50,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2020-12-22 08:13:50,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2684. [2020-12-22 08:13:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2684 states. [2020-12-22 08:13:50,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 4394 transitions. [2020-12-22 08:13:50,295 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 4394 transitions. Word has length 469 [2020-12-22 08:13:50,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:13:50,296 INFO L481 AbstractCegarLoop]: Abstraction has 2684 states and 4394 transitions. [2020-12-22 08:13:50,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:13:50,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 4394 transitions. [2020-12-22 08:13:50,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-12-22 08:13:50,311 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:13:50,312 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:50,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:13:50,313 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:13:50,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:13:50,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1345823213, now seen corresponding path program 1 times [2020-12-22 08:13:50,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:13:50,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462393615] [2020-12-22 08:13:50,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:13:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:13:51,272 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 08:13:51,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462393615] [2020-12-22 08:13:51,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:13:51,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:13:51,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067810533] [2020-12-22 08:13:51,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:13:51,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:13:51,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:13:51,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:13:51,277 INFO L87 Difference]: Start difference. First operand 2684 states and 4394 transitions. Second operand 3 states. [2020-12-22 08:13:51,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:13:51,726 INFO L93 Difference]: Finished difference Result 7789 states and 12709 transitions. [2020-12-22 08:13:51,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:13:51,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 471 [2020-12-22 08:13:51,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:13:51,759 INFO L225 Difference]: With dead ends: 7789 [2020-12-22 08:13:51,760 INFO L226 Difference]: Without dead ends: 5315 [2020-12-22 08:13:51,767 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 08:13:51,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5315 states. [2020-12-22 08:13:52,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5315 to 5264. [2020-12-22 08:13:52,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5264 states. [2020-12-22 08:13:52,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 8592 transitions. [2020-12-22 08:13:52,028 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 8592 transitions. Word has length 471 [2020-12-22 08:13:52,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:13:52,029 INFO L481 AbstractCegarLoop]: Abstraction has 5264 states and 8592 transitions. [2020-12-22 08:13:52,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:13:52,029 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 8592 transitions. [2020-12-22 08:13:52,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-12-22 08:13:52,049 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:13:52,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:52,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:13:52,050 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:13:52,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:13:52,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1964801184, now seen corresponding path program 1 times [2020-12-22 08:13:52,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:13:52,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887902504] [2020-12-22 08:13:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:13:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:13:52,344 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 08:13:52,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887902504] [2020-12-22 08:13:52,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:13:52,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:13:52,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112311930] [2020-12-22 08:13:52,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:13:52,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:13:52,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:13:52,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:13:52,348 INFO L87 Difference]: Start difference. First operand 5264 states and 8592 transitions. Second operand 3 states. [2020-12-22 08:13:52,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:13:52,838 INFO L93 Difference]: Finished difference Result 15703 states and 25616 transitions. [2020-12-22 08:13:52,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:13:52,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 472 [2020-12-22 08:13:52,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:13:52,896 INFO L225 Difference]: With dead ends: 15703 [2020-12-22 08:13:52,896 INFO L226 Difference]: Without dead ends: 10487 [2020-12-22 08:13:52,908 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 08:13:52,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10487 states. [2020-12-22 08:13:53,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10487 to 5311. [2020-12-22 08:13:53,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5311 states. [2020-12-22 08:13:53,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5311 states to 5311 states and 8666 transitions. [2020-12-22 08:13:53,277 INFO L78 Accepts]: Start accepts. Automaton has 5311 states and 8666 transitions. Word has length 472 [2020-12-22 08:13:53,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:13:53,277 INFO L481 AbstractCegarLoop]: Abstraction has 5311 states and 8666 transitions. [2020-12-22 08:13:53,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:13:53,278 INFO L276 IsEmpty]: Start isEmpty. Operand 5311 states and 8666 transitions. [2020-12-22 08:13:53,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2020-12-22 08:13:53,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:13:53,303 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:53,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:13:53,303 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:13:53,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:13:53,304 INFO L82 PathProgramCache]: Analyzing trace with hash -2012007118, now seen corresponding path program 1 times [2020-12-22 08:13:53,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:13:53,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409866191] [2020-12-22 08:13:53,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:13:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:13:54,003 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 08:13:54,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409866191] [2020-12-22 08:13:54,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:13:54,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:13:54,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512312948] [2020-12-22 08:13:54,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:13:54,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:13:54,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:13:54,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:13:54,007 INFO L87 Difference]: Start difference. First operand 5311 states and 8666 transitions. Second operand 3 states. [2020-12-22 08:13:54,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:13:54,755 INFO L93 Difference]: Finished difference Result 15281 states and 24835 transitions. [2020-12-22 08:13:54,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:13:54,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 473 [2020-12-22 08:13:54,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:13:54,839 INFO L225 Difference]: With dead ends: 15281 [2020-12-22 08:13:54,839 INFO L226 Difference]: Without dead ends: 10365 [2020-12-22 08:13:54,853 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 08:13:54,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10365 states. [2020-12-22 08:13:55,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10365 to 10316. [2020-12-22 08:13:55,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10316 states. [2020-12-22 08:13:55,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10316 states to 10316 states and 16748 transitions. [2020-12-22 08:13:55,531 INFO L78 Accepts]: Start accepts. Automaton has 10316 states and 16748 transitions. Word has length 473 [2020-12-22 08:13:55,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:13:55,532 INFO L481 AbstractCegarLoop]: Abstraction has 10316 states and 16748 transitions. [2020-12-22 08:13:55,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:13:55,532 INFO L276 IsEmpty]: Start isEmpty. Operand 10316 states and 16748 transitions. [2020-12-22 08:13:55,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2020-12-22 08:13:55,564 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:13:55,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:55,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:13:55,566 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:13:55,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:13:55,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1357844173, now seen corresponding path program 1 times [2020-12-22 08:13:55,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:13:55,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664748059] [2020-12-22 08:13:55,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:13:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:13:55,935 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 08:13:55,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664748059] [2020-12-22 08:13:55,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:13:55,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:13:55,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040020226] [2020-12-22 08:13:55,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:13:55,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:13:55,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:13:55,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:13:55,939 INFO L87 Difference]: Start difference. First operand 10316 states and 16748 transitions. Second operand 3 states. [2020-12-22 08:13:56,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:13:56,857 INFO L93 Difference]: Finished difference Result 30700 states and 49807 transitions. [2020-12-22 08:13:56,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:13:56,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 473 [2020-12-22 08:13:56,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:13:56,907 INFO L225 Difference]: With dead ends: 30700 [2020-12-22 08:13:56,908 INFO L226 Difference]: Without dead ends: 20524 [2020-12-22 08:13:56,926 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 08:13:56,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20524 states. [2020-12-22 08:13:57,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20524 to 10414. [2020-12-22 08:13:57,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10414 states. [2020-12-22 08:13:57,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10414 states to 10414 states and 16899 transitions. [2020-12-22 08:13:57,573 INFO L78 Accepts]: Start accepts. Automaton has 10414 states and 16899 transitions. Word has length 473 [2020-12-22 08:13:57,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:13:57,574 INFO L481 AbstractCegarLoop]: Abstraction has 10414 states and 16899 transitions. [2020-12-22 08:13:57,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:13:57,574 INFO L276 IsEmpty]: Start isEmpty. Operand 10414 states and 16899 transitions. [2020-12-22 08:13:57,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2020-12-22 08:13:57,598 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:13:57,598 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:57,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:13:57,599 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:13:57,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:13:57,600 INFO L82 PathProgramCache]: Analyzing trace with hash 601109167, now seen corresponding path program 1 times [2020-12-22 08:13:57,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:13:57,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561303189] [2020-12-22 08:13:57,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:13:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:13:57,933 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 08:13:57,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561303189] [2020-12-22 08:13:57,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:13:57,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:13:57,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814997658] [2020-12-22 08:13:57,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:13:57,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:13:57,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:13:57,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:13:57,937 INFO L87 Difference]: Start difference. First operand 10414 states and 16899 transitions. Second operand 3 states. [2020-12-22 08:13:59,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:13:59,000 INFO L93 Difference]: Finished difference Result 30835 states and 49988 transitions. [2020-12-22 08:13:59,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:13:59,001 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 474 [2020-12-22 08:13:59,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:13:59,059 INFO L225 Difference]: With dead ends: 30835 [2020-12-22 08:13:59,059 INFO L226 Difference]: Without dead ends: 20641 [2020-12-22 08:13:59,084 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 08:13:59,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20641 states. [2020-12-22 08:13:59,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20641 to 10531. [2020-12-22 08:13:59,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10531 states. [2020-12-22 08:13:59,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10531 states to 10531 states and 17045 transitions. [2020-12-22 08:13:59,938 INFO L78 Accepts]: Start accepts. Automaton has 10531 states and 17045 transitions. Word has length 474 [2020-12-22 08:13:59,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:13:59,938 INFO L481 AbstractCegarLoop]: Abstraction has 10531 states and 17045 transitions. [2020-12-22 08:13:59,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:13:59,938 INFO L276 IsEmpty]: Start isEmpty. Operand 10531 states and 17045 transitions. [2020-12-22 08:13:59,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-12-22 08:13:59,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:13:59,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:59,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:13:59,964 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:13:59,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:13:59,965 INFO L82 PathProgramCache]: Analyzing trace with hash -795474857, now seen corresponding path program 1 times [2020-12-22 08:13:59,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:13:59,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619093046] [2020-12-22 08:13:59,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:14:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:14:00,525 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 08:14:00,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619093046] [2020-12-22 08:14:00,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:14:00,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:14:00,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451694935] [2020-12-22 08:14:00,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:14:00,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:14:00,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:14:00,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:14:00,528 INFO L87 Difference]: Start difference. First operand 10531 states and 17045 transitions. Second operand 3 states. [2020-12-22 08:14:01,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:14:01,576 INFO L93 Difference]: Finished difference Result 29917 states and 48288 transitions. [2020-12-22 08:14:01,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:14:01,581 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 475 [2020-12-22 08:14:01,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:14:01,634 INFO L225 Difference]: With dead ends: 29917 [2020-12-22 08:14:01,634 INFO L226 Difference]: Without dead ends: 20351 [2020-12-22 08:14:01,653 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 08:14:01,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20351 states. [2020-12-22 08:14:02,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20351 to 20304. [2020-12-22 08:14:02,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20304 states. [2020-12-22 08:14:02,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20304 states to 20304 states and 32710 transitions. [2020-12-22 08:14:02,698 INFO L78 Accepts]: Start accepts. Automaton has 20304 states and 32710 transitions. Word has length 475 [2020-12-22 08:14:02,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:14:02,699 INFO L481 AbstractCegarLoop]: Abstraction has 20304 states and 32710 transitions. [2020-12-22 08:14:02,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:14:02,699 INFO L276 IsEmpty]: Start isEmpty. Operand 20304 states and 32710 transitions. [2020-12-22 08:14:02,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-12-22 08:14:02,735 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:14:02,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:02,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:14:02,736 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:14:02,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:14:02,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1870922138, now seen corresponding path program 1 times [2020-12-22 08:14:02,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:14:02,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42874272] [2020-12-22 08:14:02,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:14:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:14:03,902 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 08:14:03,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42874272] [2020-12-22 08:14:03,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:14:03,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:14:03,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451372001] [2020-12-22 08:14:03,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:14:03,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:14:03,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:14:03,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:14:03,905 INFO L87 Difference]: Start difference. First operand 20304 states and 32710 transitions. Second operand 5 states. [2020-12-22 08:14:06,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:14:06,580 INFO L93 Difference]: Finished difference Result 59487 states and 95812 transitions. [2020-12-22 08:14:06,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:14:06,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 475 [2020-12-22 08:14:06,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:14:06,654 INFO L225 Difference]: With dead ends: 59487 [2020-12-22 08:14:06,655 INFO L226 Difference]: Without dead ends: 39397 [2020-12-22 08:14:06,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:14:06,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39397 states. [2020-12-22 08:14:08,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39397 to 39355. [2020-12-22 08:14:08,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39355 states. [2020-12-22 08:14:08,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39355 states to 39355 states and 63092 transitions. [2020-12-22 08:14:08,835 INFO L78 Accepts]: Start accepts. Automaton has 39355 states and 63092 transitions. Word has length 475 [2020-12-22 08:14:08,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:14:08,836 INFO L481 AbstractCegarLoop]: Abstraction has 39355 states and 63092 transitions. [2020-12-22 08:14:08,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:14:08,836 INFO L276 IsEmpty]: Start isEmpty. Operand 39355 states and 63092 transitions. [2020-12-22 08:14:08,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2020-12-22 08:14:08,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:14:08,887 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:08,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:14:08,887 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:14:08,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:14:08,888 INFO L82 PathProgramCache]: Analyzing trace with hash -2069991534, now seen corresponding path program 1 times [2020-12-22 08:14:08,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:14:08,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754738494] [2020-12-22 08:14:08,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:14:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:14:09,702 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 08:14:09,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754738494] [2020-12-22 08:14:09,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:14:09,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:14:09,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331024130] [2020-12-22 08:14:09,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:14:09,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:14:09,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:14:09,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:14:09,705 INFO L87 Difference]: Start difference. First operand 39355 states and 63092 transitions. Second operand 3 states. [2020-12-22 08:14:13,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:14:13,203 INFO L93 Difference]: Finished difference Result 115402 states and 184837 transitions. [2020-12-22 08:14:13,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:14:13,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 477 [2020-12-22 08:14:13,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:14:13,325 INFO L225 Difference]: With dead ends: 115402 [2020-12-22 08:14:13,325 INFO L226 Difference]: Without dead ends: 77585 [2020-12-22 08:14:13,372 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 08:14:13,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77585 states. [2020-12-22 08:14:18,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77585 to 77547. [2020-12-22 08:14:18,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77547 states. [2020-12-22 08:14:18,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77547 states to 77547 states and 123848 transitions. [2020-12-22 08:14:18,228 INFO L78 Accepts]: Start accepts. Automaton has 77547 states and 123848 transitions. Word has length 477 [2020-12-22 08:14:18,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:14:18,228 INFO L481 AbstractCegarLoop]: Abstraction has 77547 states and 123848 transitions. [2020-12-22 08:14:18,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:14:18,228 INFO L276 IsEmpty]: Start isEmpty. Operand 77547 states and 123848 transitions. [2020-12-22 08:14:18,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-12-22 08:14:18,343 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:14:18,343 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:18,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:14:18,344 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:14:18,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:14:18,345 INFO L82 PathProgramCache]: Analyzing trace with hash -538588457, now seen corresponding path program 1 times [2020-12-22 08:14:18,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:14:18,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055737861] [2020-12-22 08:14:18,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:14:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:14:19,155 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 08:14:19,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055737861] [2020-12-22 08:14:19,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:14:19,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:14:19,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143589908] [2020-12-22 08:14:19,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:14:19,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:14:19,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:14:19,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:14:19,158 INFO L87 Difference]: Start difference. First operand 77547 states and 123848 transitions. Second operand 3 states. [2020-12-22 08:14:26,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:14:26,321 INFO L93 Difference]: Finished difference Result 226103 states and 360295 transitions. [2020-12-22 08:14:26,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:14:26,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 479 [2020-12-22 08:14:26,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:14:26,565 INFO L225 Difference]: With dead ends: 226103 [2020-12-22 08:14:26,566 INFO L226 Difference]: Without dead ends: 152260 [2020-12-22 08:14:26,804 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 08:14:26,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152260 states. [2020-12-22 08:14:34,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152260 to 152224. [2020-12-22 08:14:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152224 states. [2020-12-22 08:14:35,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152224 states to 152224 states and 241976 transitions. [2020-12-22 08:14:35,222 INFO L78 Accepts]: Start accepts. Automaton has 152224 states and 241976 transitions. Word has length 479 [2020-12-22 08:14:35,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:14:35,222 INFO L481 AbstractCegarLoop]: Abstraction has 152224 states and 241976 transitions. [2020-12-22 08:14:35,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:14:35,223 INFO L276 IsEmpty]: Start isEmpty. Operand 152224 states and 241976 transitions. [2020-12-22 08:14:35,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-12-22 08:14:35,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:14:35,394 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:35,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:14:35,394 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:14:35,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:14:35,395 INFO L82 PathProgramCache]: Analyzing trace with hash -441959206, now seen corresponding path program 1 times [2020-12-22 08:14:35,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:14:35,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348365615] [2020-12-22 08:14:35,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:14:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:14:36,973 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 08:14:36,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348365615] [2020-12-22 08:14:36,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:14:36,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:14:36,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614030970] [2020-12-22 08:14:36,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:14:36,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:14:36,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:14:36,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:14:36,976 INFO L87 Difference]: Start difference. First operand 152224 states and 241976 transitions. Second operand 5 states. [2020-12-22 08:14:51,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:14:51,527 INFO L93 Difference]: Finished difference Result 452147 states and 718686 transitions. [2020-12-22 08:14:51,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:14:51,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 479 [2020-12-22 08:14:51,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:14:52,288 INFO L225 Difference]: With dead ends: 452147 [2020-12-22 08:14:52,289 INFO L226 Difference]: Without dead ends: 300307 [2020-12-22 08:14:52,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:14:52,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300307 states. [2020-12-22 08:15:08,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300307 to 300276. [2020-12-22 08:15:08,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300276 states. [2020-12-22 08:15:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300276 states to 300276 states and 475157 transitions. [2020-12-22 08:15:10,074 INFO L78 Accepts]: Start accepts. Automaton has 300276 states and 475157 transitions. Word has length 479 [2020-12-22 08:15:10,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:10,075 INFO L481 AbstractCegarLoop]: Abstraction has 300276 states and 475157 transitions. [2020-12-22 08:15:10,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:15:10,075 INFO L276 IsEmpty]: Start isEmpty. Operand 300276 states and 475157 transitions. [2020-12-22 08:15:10,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-12-22 08:15:10,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:10,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:15:10,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:15:10,383 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:10,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:10,384 INFO L82 PathProgramCache]: Analyzing trace with hash -749089383, now seen corresponding path program 1 times [2020-12-22 08:15:10,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:10,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148182713] [2020-12-22 08:15:10,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:11,808 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 08:15:11,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148182713] [2020-12-22 08:15:11,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:11,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:15:11,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560996418] [2020-12-22 08:15:11,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:15:11,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:11,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:15:11,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:15:11,811 INFO L87 Difference]: Start difference. First operand 300276 states and 475157 transitions. Second operand 4 states. [2020-12-22 08:15:42,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:42,519 INFO L93 Difference]: Finished difference Result 893232 states and 1413251 transitions. [2020-12-22 08:15:42,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:15:42,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 481 [2020-12-22 08:15:42,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:43,910 INFO L225 Difference]: With dead ends: 893232 [2020-12-22 08:15:43,910 INFO L226 Difference]: Without dead ends: 594030 [2020-12-22 08:15:44,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 08:15:44,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594030 states.