/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/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:48:58,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:48:58,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:48:58,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:48:58,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:48:58,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:48:58,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:48:58,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:48:58,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:48:58,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:48:58,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:48:58,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:48:58,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:48:58,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:48:58,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:48:58,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:48:58,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:48:58,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:48:58,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:48:58,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:48:58,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:48:58,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:48:58,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:48:58,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:48:58,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 13:48:58,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:48:58,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:48:58,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:48:58,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:48:58,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:48:58,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:48:58,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:48:58,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:48:58,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:48:58,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:48:58,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:48:58,209 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:48:58,264 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:48:58,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:48:58,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:48:58,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:48:58,268 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:48:58,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:48:58,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:48:58,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:48:58,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:48:58,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:48:58,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:48:58,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:48:58,271 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:48:58,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:48:58,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:48:58,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:48:58,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:48:58,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:48:58,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:48:58,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:48:58,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:48:58,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:48:58,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:48:58,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:48:58,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:48:58,274 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:48:58,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:48:58,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:48:58,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:48:58,729 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:48:58,729 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:48:58,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:48:58,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/618b20137/238f60d05ac34e28baf39e7f5bfe863c/FLAGc547ed432 [2020-12-22 13:48:59,925 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:48:59,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:48:59,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/618b20137/238f60d05ac34e28baf39e7f5bfe863c/FLAGc547ed432 [2020-12-22 13:49:00,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/618b20137/238f60d05ac34e28baf39e7f5bfe863c [2020-12-22 13:49:00,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:49:00,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:49:00,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:49:00,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:49:00,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:49:00,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:49:00" (1/1) ... [2020-12-22 13:49:00,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a618044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:00, skipping insertion in model container [2020-12-22 13:49:00,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:49:00" (1/1) ... [2020-12-22 13:49:00,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:49:00,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:49:03,512 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/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2020-12-22 13:49:03,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:49:03,639 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:49:04,089 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/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2020-12-22 13:49:04,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:49:05,042 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:49:05,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05 WrapperNode [2020-12-22 13:49:05,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:49:05,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:49:05,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:49:05,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:49:05,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (1/1) ... [2020-12-22 13:49:05,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (1/1) ... [2020-12-22 13:49:06,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:49:06,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:49:06,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:49:06,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:49:06,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (1/1) ... [2020-12-22 13:49:06,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (1/1) ... [2020-12-22 13:49:06,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (1/1) ... [2020-12-22 13:49:06,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (1/1) ... [2020-12-22 13:49:07,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (1/1) ... [2020-12-22 13:49:08,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (1/1) ... [2020-12-22 13:49:08,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (1/1) ... [2020-12-22 13:49:08,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:49:08,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:49:08,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:49:08,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:49:08,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (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 13:49:08,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:49:08,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:49:08,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:49:08,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:49:08,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:49:08,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:49:08,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:49:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:49:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:49:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:49:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:49:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:49:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:49:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:49:08,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:49:41,719 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:49:41,719 INFO L299 CfgBuilder]: Removed 8487 assume(true) statements. [2020-12-22 13:49:41,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:49:41 BoogieIcfgContainer [2020-12-22 13:49:41,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:49:41,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:49:41,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:49:41,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:49:41,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:49:00" (1/3) ... [2020-12-22 13:49:41,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ac8c86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:49:41, skipping insertion in model container [2020-12-22 13:49:41,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:05" (2/3) ... [2020-12-22 13:49:41,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ac8c86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:49:41, skipping insertion in model container [2020-12-22 13:49:41,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:49:41" (3/3) ... [2020-12-22 13:49:41,734 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:49:41,741 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:49:41,753 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 13:49:41,773 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 13:49:41,841 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:49:41,841 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:49:41,841 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:49:41,841 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:49:41,842 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:49:41,842 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:49:41,842 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:49:41,842 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:49:41,930 INFO L276 IsEmpty]: Start isEmpty. Operand 5110 states. [2020-12-22 13:49:41,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 13:49:41,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:41,952 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] [2020-12-22 13:49:41,953 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:41,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:41,961 INFO L82 PathProgramCache]: Analyzing trace with hash -623761508, now seen corresponding path program 1 times [2020-12-22 13:49:41,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:41,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145066179] [2020-12-22 13:49:41,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:42,685 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 13:49:42,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145066179] [2020-12-22 13:49:42,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:42,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:49:42,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630356384] [2020-12-22 13:49:42,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 13:49:42,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:42,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 13:49:42,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 13:49:42,710 INFO L87 Difference]: Start difference. First operand 5110 states. Second operand 2 states. [2020-12-22 13:49:42,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:42,961 INFO L93 Difference]: Finished difference Result 10186 states and 12525 transitions. [2020-12-22 13:49:42,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 13:49:42,963 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 69 [2020-12-22 13:49:42,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:43,018 INFO L225 Difference]: With dead ends: 10186 [2020-12-22 13:49:43,018 INFO L226 Difference]: Without dead ends: 5056 [2020-12-22 13:49:43,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 13:49:43,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5056 states. [2020-12-22 13:49:43,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5056 to 5056. [2020-12-22 13:49:43,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5056 states. [2020-12-22 13:49:43,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5056 states to 5056 states and 6151 transitions. [2020-12-22 13:49:43,283 INFO L78 Accepts]: Start accepts. Automaton has 5056 states and 6151 transitions. Word has length 69 [2020-12-22 13:49:43,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:43,284 INFO L481 AbstractCegarLoop]: Abstraction has 5056 states and 6151 transitions. [2020-12-22 13:49:43,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 13:49:43,285 INFO L276 IsEmpty]: Start isEmpty. Operand 5056 states and 6151 transitions. [2020-12-22 13:49:43,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 13:49:43,296 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:43,296 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] [2020-12-22 13:49:43,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:49:43,297 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:43,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:43,299 INFO L82 PathProgramCache]: Analyzing trace with hash -606369396, now seen corresponding path program 1 times [2020-12-22 13:49:43,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:43,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424894587] [2020-12-22 13:49:43,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:43,646 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 13:49:43,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424894587] [2020-12-22 13:49:43,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:43,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:43,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180452116] [2020-12-22 13:49:43,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:43,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:43,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:43,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:43,651 INFO L87 Difference]: Start difference. First operand 5056 states and 6151 transitions. Second operand 3 states. [2020-12-22 13:49:46,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:46,139 INFO L93 Difference]: Finished difference Result 15006 states and 18281 transitions. [2020-12-22 13:49:46,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:46,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 13:49:46,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:46,189 INFO L225 Difference]: With dead ends: 15006 [2020-12-22 13:49:46,189 INFO L226 Difference]: Without dead ends: 10008 [2020-12-22 13:49:46,207 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 13:49:46,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10008 states. [2020-12-22 13:49:46,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10008 to 10000. [2020-12-22 13:49:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10000 states. [2020-12-22 13:49:46,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10000 states to 10000 states and 12186 transitions. [2020-12-22 13:49:46,499 INFO L78 Accepts]: Start accepts. Automaton has 10000 states and 12186 transitions. Word has length 69 [2020-12-22 13:49:46,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:46,500 INFO L481 AbstractCegarLoop]: Abstraction has 10000 states and 12186 transitions. [2020-12-22 13:49:46,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:46,501 INFO L276 IsEmpty]: Start isEmpty. Operand 10000 states and 12186 transitions. [2020-12-22 13:49:46,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 13:49:46,508 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:46,509 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] [2020-12-22 13:49:46,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:49:46,509 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:46,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:46,511 INFO L82 PathProgramCache]: Analyzing trace with hash -146693713, now seen corresponding path program 1 times [2020-12-22 13:49:46,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:46,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290541916] [2020-12-22 13:49:46,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:46,875 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 13:49:46,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290541916] [2020-12-22 13:49:46,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:46,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:46,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750217015] [2020-12-22 13:49:46,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:46,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:46,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:46,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:46,886 INFO L87 Difference]: Start difference. First operand 10000 states and 12186 transitions. Second operand 3 states. [2020-12-22 13:49:47,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:47,198 INFO L93 Difference]: Finished difference Result 10000 states and 12186 transitions. [2020-12-22 13:49:47,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:47,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 13:49:47,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:47,257 INFO L225 Difference]: With dead ends: 10000 [2020-12-22 13:49:47,257 INFO L226 Difference]: Without dead ends: 9998 [2020-12-22 13:49:47,262 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 13:49:47,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9998 states. [2020-12-22 13:49:47,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9998 to 9998. [2020-12-22 13:49:47,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9998 states. [2020-12-22 13:49:47,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9998 states to 9998 states and 12184 transitions. [2020-12-22 13:49:47,799 INFO L78 Accepts]: Start accepts. Automaton has 9998 states and 12184 transitions. Word has length 78 [2020-12-22 13:49:47,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:47,801 INFO L481 AbstractCegarLoop]: Abstraction has 9998 states and 12184 transitions. [2020-12-22 13:49:47,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:47,801 INFO L276 IsEmpty]: Start isEmpty. Operand 9998 states and 12184 transitions. [2020-12-22 13:49:47,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 13:49:47,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:47,805 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] [2020-12-22 13:49:47,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:49:47,806 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:47,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:47,807 INFO L82 PathProgramCache]: Analyzing trace with hash -252516706, now seen corresponding path program 1 times [2020-12-22 13:49:47,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:47,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648562444] [2020-12-22 13:49:47,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:48,110 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 13:49:48,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648562444] [2020-12-22 13:49:48,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:48,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:48,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455728749] [2020-12-22 13:49:48,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:48,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:48,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:48,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:48,115 INFO L87 Difference]: Start difference. First operand 9998 states and 12184 transitions. Second operand 3 states. [2020-12-22 13:49:49,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:49,027 INFO L93 Difference]: Finished difference Result 29844 states and 36397 transitions. [2020-12-22 13:49:49,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:49,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 13:49:49,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:49,106 INFO L225 Difference]: With dead ends: 29844 [2020-12-22 13:49:49,107 INFO L226 Difference]: Without dead ends: 19900 [2020-12-22 13:49:49,131 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 13:49:49,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19900 states. [2020-12-22 13:49:49,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19900 to 19896. [2020-12-22 13:49:49,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19896 states. [2020-12-22 13:49:50,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19896 states to 19896 states and 24257 transitions. [2020-12-22 13:49:50,050 INFO L78 Accepts]: Start accepts. Automaton has 19896 states and 24257 transitions. Word has length 79 [2020-12-22 13:49:50,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:50,051 INFO L481 AbstractCegarLoop]: Abstraction has 19896 states and 24257 transitions. [2020-12-22 13:49:50,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:50,051 INFO L276 IsEmpty]: Start isEmpty. Operand 19896 states and 24257 transitions. [2020-12-22 13:49:50,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-22 13:49:50,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:50,079 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:50,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:49:50,080 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:50,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:50,081 INFO L82 PathProgramCache]: Analyzing trace with hash 976309893, now seen corresponding path program 1 times [2020-12-22 13:49:50,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:50,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322439759] [2020-12-22 13:49:50,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:50,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:50,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322439759] [2020-12-22 13:49:50,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:50,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:50,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400330301] [2020-12-22 13:49:50,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:50,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:50,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:50,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:50,399 INFO L87 Difference]: Start difference. First operand 19896 states and 24257 transitions. Second operand 3 states. [2020-12-22 13:49:51,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:51,812 INFO L93 Difference]: Finished difference Result 53309 states and 64925 transitions. [2020-12-22 13:49:51,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:51,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2020-12-22 13:49:51,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:51,894 INFO L225 Difference]: With dead ends: 53309 [2020-12-22 13:49:51,894 INFO L226 Difference]: Without dead ends: 33471 [2020-12-22 13:49:51,936 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 13:49:51,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33471 states. [2020-12-22 13:49:53,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33471 to 31820. [2020-12-22 13:49:53,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31820 states. [2020-12-22 13:49:53,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31820 states to 31820 states and 38840 transitions. [2020-12-22 13:49:53,089 INFO L78 Accepts]: Start accepts. Automaton has 31820 states and 38840 transitions. Word has length 163 [2020-12-22 13:49:53,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:53,090 INFO L481 AbstractCegarLoop]: Abstraction has 31820 states and 38840 transitions. [2020-12-22 13:49:53,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:53,091 INFO L276 IsEmpty]: Start isEmpty. Operand 31820 states and 38840 transitions. [2020-12-22 13:49:53,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-12-22 13:49:53,110 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:53,111 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] [2020-12-22 13:49:53,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:49:53,111 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:53,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:53,112 INFO L82 PathProgramCache]: Analyzing trace with hash -783847760, now seen corresponding path program 1 times [2020-12-22 13:49:53,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:53,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678668589] [2020-12-22 13:49:53,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:53,666 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 13:49:53,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678668589] [2020-12-22 13:49:53,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:53,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:53,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743133624] [2020-12-22 13:49:53,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:53,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:53,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:53,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:53,670 INFO L87 Difference]: Start difference. First operand 31820 states and 38840 transitions. Second operand 3 states. [2020-12-22 13:49:55,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:55,402 INFO L93 Difference]: Finished difference Result 77335 states and 94854 transitions. [2020-12-22 13:49:55,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:55,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 278 [2020-12-22 13:49:55,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:55,500 INFO L225 Difference]: With dead ends: 77335 [2020-12-22 13:49:55,500 INFO L226 Difference]: Without dead ends: 45573 [2020-12-22 13:49:55,561 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 13:49:55,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45573 states. [2020-12-22 13:49:56,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45573 to 45564. [2020-12-22 13:49:56,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45564 states. [2020-12-22 13:49:56,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45564 states to 45564 states and 56062 transitions. [2020-12-22 13:49:56,895 INFO L78 Accepts]: Start accepts. Automaton has 45564 states and 56062 transitions. Word has length 278 [2020-12-22 13:49:56,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:56,896 INFO L481 AbstractCegarLoop]: Abstraction has 45564 states and 56062 transitions. [2020-12-22 13:49:56,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:56,896 INFO L276 IsEmpty]: Start isEmpty. Operand 45564 states and 56062 transitions. [2020-12-22 13:49:56,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-12-22 13:49:56,925 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:56,925 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:56,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:49:56,926 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:56,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:56,926 INFO L82 PathProgramCache]: Analyzing trace with hash 2075658536, now seen corresponding path program 1 times [2020-12-22 13:49:56,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:56,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141239622] [2020-12-22 13:49:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:57,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:49:57,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141239622] [2020-12-22 13:49:57,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222079906] [2020-12-22 13:49:57,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:49:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:59,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 6404 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 13:49:59,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:50:00,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:50:00,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:50:00,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 13:50:00,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640774163] [2020-12-22 13:50:00,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:50:00,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:00,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:50:00,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:50:00,320 INFO L87 Difference]: Start difference. First operand 45564 states and 56062 transitions. Second operand 3 states. [2020-12-22 13:50:02,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:02,426 INFO L93 Difference]: Finished difference Result 105159 states and 129954 transitions. [2020-12-22 13:50:02,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:50:02,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 325 [2020-12-22 13:50:02,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:02,571 INFO L225 Difference]: With dead ends: 105159 [2020-12-22 13:50:02,571 INFO L226 Difference]: Without dead ends: 59653 [2020-12-22 13:50:02,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:50:02,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59653 states. [2020-12-22 13:50:05,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59653 to 59644. [2020-12-22 13:50:05,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59644 states. [2020-12-22 13:50:05,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59644 states to 59644 states and 73796 transitions. [2020-12-22 13:50:05,226 INFO L78 Accepts]: Start accepts. Automaton has 59644 states and 73796 transitions. Word has length 325 [2020-12-22 13:50:05,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:05,227 INFO L481 AbstractCegarLoop]: Abstraction has 59644 states and 73796 transitions. [2020-12-22 13:50:05,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:50:05,227 INFO L276 IsEmpty]: Start isEmpty. Operand 59644 states and 73796 transitions. [2020-12-22 13:50:05,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-12-22 13:50:05,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:05,265 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:05,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 13:50:05,481 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:05,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:05,482 INFO L82 PathProgramCache]: Analyzing trace with hash -39876190, now seen corresponding path program 1 times [2020-12-22 13:50:05,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:05,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337542991] [2020-12-22 13:50:05,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:06,461 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 13:50:06,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337542991] [2020-12-22 13:50:06,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:50:06,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:50:06,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877864054] [2020-12-22 13:50:06,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:50:06,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:06,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:50:06,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:50:06,464 INFO L87 Difference]: Start difference. First operand 59644 states and 73796 transitions. Second operand 3 states. [2020-12-22 13:50:08,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:08,489 INFO L93 Difference]: Finished difference Result 120238 states and 148633 transitions. [2020-12-22 13:50:08,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:50:08,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 348 [2020-12-22 13:50:08,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:08,590 INFO L225 Difference]: With dead ends: 120238 [2020-12-22 13:50:08,591 INFO L226 Difference]: Without dead ends: 60652 [2020-12-22 13:50:08,672 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 13:50:08,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60652 states. [2020-12-22 13:50:10,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60652 to 59692. [2020-12-22 13:50:10,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59692 states. [2020-12-22 13:50:10,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59692 states to 59692 states and 73844 transitions. [2020-12-22 13:50:10,551 INFO L78 Accepts]: Start accepts. Automaton has 59692 states and 73844 transitions. Word has length 348 [2020-12-22 13:50:10,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:10,551 INFO L481 AbstractCegarLoop]: Abstraction has 59692 states and 73844 transitions. [2020-12-22 13:50:10,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:50:10,552 INFO L276 IsEmpty]: Start isEmpty. Operand 59692 states and 73844 transitions. [2020-12-22 13:50:10,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-12-22 13:50:10,576 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:10,577 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:10,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:50:10,577 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:10,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:10,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1610861700, now seen corresponding path program 1 times [2020-12-22 13:50:10,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:10,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189296268] [2020-12-22 13:50:10,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:11,460 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 13:50:11,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189296268] [2020-12-22 13:50:11,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:50:11,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:50:11,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357531208] [2020-12-22 13:50:11,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:50:11,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:11,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:50:11,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:50:11,472 INFO L87 Difference]: Start difference. First operand 59692 states and 73844 transitions. Second operand 3 states. [2020-12-22 13:50:13,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:13,161 INFO L93 Difference]: Finished difference Result 119806 states and 148153 transitions. [2020-12-22 13:50:13,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:50:13,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 360 [2020-12-22 13:50:13,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:13,252 INFO L225 Difference]: With dead ends: 119806 [2020-12-22 13:50:13,252 INFO L226 Difference]: Without dead ends: 60172 [2020-12-22 13:50:13,325 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 13:50:13,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60172 states. [2020-12-22 13:50:15,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60172 to 59740. [2020-12-22 13:50:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59740 states. [2020-12-22 13:50:15,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59740 states to 59740 states and 73892 transitions. [2020-12-22 13:50:15,138 INFO L78 Accepts]: Start accepts. Automaton has 59740 states and 73892 transitions. Word has length 360 [2020-12-22 13:50:15,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:15,139 INFO L481 AbstractCegarLoop]: Abstraction has 59740 states and 73892 transitions. [2020-12-22 13:50:15,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:50:15,139 INFO L276 IsEmpty]: Start isEmpty. Operand 59740 states and 73892 transitions. [2020-12-22 13:50:15,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-12-22 13:50:15,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:15,159 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:15,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 13:50:15,159 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:15,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:15,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1456428464, now seen corresponding path program 1 times [2020-12-22 13:50:15,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:15,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256789059] [2020-12-22 13:50:15,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:16,037 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 13:50:16,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256789059] [2020-12-22 13:50:16,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443691285] [2020-12-22 13:50:16,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:18,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 6878 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 13:50:18,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:50:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 13:50:18,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:50:18,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 13:50:18,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369835163] [2020-12-22 13:50:18,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:50:18,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:18,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:50:18,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:50:18,808 INFO L87 Difference]: Start difference. First operand 59740 states and 73892 transitions. Second operand 5 states. [2020-12-22 13:50:21,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:21,367 INFO L93 Difference]: Finished difference Result 120334 states and 148681 transitions. [2020-12-22 13:50:21,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:50:21,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 370 [2020-12-22 13:50:21,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:21,594 INFO L225 Difference]: With dead ends: 120334 [2020-12-22 13:50:21,595 INFO L226 Difference]: Without dead ends: 60652 [2020-12-22 13:50:21,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:50:22,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60652 states. [2020-12-22 13:50:24,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60652 to 60220. [2020-12-22 13:50:24,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60220 states. [2020-12-22 13:50:24,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60220 states to 60220 states and 74372 transitions. [2020-12-22 13:50:24,675 INFO L78 Accepts]: Start accepts. Automaton has 60220 states and 74372 transitions. Word has length 370 [2020-12-22 13:50:24,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:24,676 INFO L481 AbstractCegarLoop]: Abstraction has 60220 states and 74372 transitions. [2020-12-22 13:50:24,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:50:24,676 INFO L276 IsEmpty]: Start isEmpty. Operand 60220 states and 74372 transitions. [2020-12-22 13:50:24,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-12-22 13:50:24,703 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:24,704 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:24,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 13:50:24,919 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:24,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:24,920 INFO L82 PathProgramCache]: Analyzing trace with hash -2146154780, now seen corresponding path program 2 times [2020-12-22 13:50:24,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:24,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860762174] [2020-12-22 13:50:24,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-12-22 13:50:25,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860762174] [2020-12-22 13:50:25,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281787259] [2020-12-22 13:50:25,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:38,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 13:50:38,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:50:38,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 5919 conjuncts, 55 conjunts are in the unsatisfiable core [2020-12-22 13:50:38,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:50:38,729 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-22 13:50:38,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:50:38,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 13:50:38,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530556772] [2020-12-22 13:50:38,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:50:38,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:38,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:50:38,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:50:38,732 INFO L87 Difference]: Start difference. First operand 60220 states and 74372 transitions. Second operand 3 states. [2020-12-22 13:50:40,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:40,616 INFO L93 Difference]: Finished difference Result 120425 states and 148757 transitions. [2020-12-22 13:50:40,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:50:40,617 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 380 [2020-12-22 13:50:40,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:40,772 INFO L225 Difference]: With dead ends: 120425 [2020-12-22 13:50:40,773 INFO L226 Difference]: Without dead ends: 60249 [2020-12-22 13:50:40,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:50:40,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60249 states. [2020-12-22 13:50:42,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60249 to 60249. [2020-12-22 13:50:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60249 states. [2020-12-22 13:50:42,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60249 states to 60249 states and 74401 transitions. [2020-12-22 13:50:42,721 INFO L78 Accepts]: Start accepts. Automaton has 60249 states and 74401 transitions. Word has length 380 [2020-12-22 13:50:42,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:42,722 INFO L481 AbstractCegarLoop]: Abstraction has 60249 states and 74401 transitions. [2020-12-22 13:50:42,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:50:42,722 INFO L276 IsEmpty]: Start isEmpty. Operand 60249 states and 74401 transitions. [2020-12-22 13:50:42,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-12-22 13:50:42,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:42,738 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:42,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 13:50:42,952 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:42,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:42,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1194521892, now seen corresponding path program 1 times [2020-12-22 13:50:42,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:42,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470579303] [2020-12-22 13:50:42,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:43,814 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-22 13:50:43,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470579303] [2020-12-22 13:50:43,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793200296] [2020-12-22 13:50:43,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:46,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 7103 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:50:46,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:50:46,540 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-22 13:50:46,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:50:46,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-12-22 13:50:46,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299254211] [2020-12-22 13:50:46,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:50:46,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:46,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:50:46,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:50:46,543 INFO L87 Difference]: Start difference. First operand 60249 states and 74401 transitions. Second operand 7 states. [2020-12-22 13:50:49,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:49,341 INFO L93 Difference]: Finished difference Result 126195 states and 154782 transitions. [2020-12-22 13:50:49,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 13:50:49,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 385 [2020-12-22 13:50:49,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:49,428 INFO L225 Difference]: With dead ends: 126195 [2020-12-22 13:50:49,428 INFO L226 Difference]: Without dead ends: 66009 [2020-12-22 13:50:49,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2020-12-22 13:50:49,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66009 states. [2020-12-22 13:50:51,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66009 to 62745. [2020-12-22 13:50:51,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62745 states. [2020-12-22 13:50:51,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62745 states to 62745 states and 76945 transitions. [2020-12-22 13:50:51,409 INFO L78 Accepts]: Start accepts. Automaton has 62745 states and 76945 transitions. Word has length 385 [2020-12-22 13:50:51,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:51,410 INFO L481 AbstractCegarLoop]: Abstraction has 62745 states and 76945 transitions. [2020-12-22 13:50:51,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:50:51,410 INFO L276 IsEmpty]: Start isEmpty. Operand 62745 states and 76945 transitions. [2020-12-22 13:50:51,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2020-12-22 13:50:51,422 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:51,423 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:51,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:51,624 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:51,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:51,626 INFO L82 PathProgramCache]: Analyzing trace with hash 490670342, now seen corresponding path program 2 times [2020-12-22 13:50:51,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:51,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411696885] [2020-12-22 13:50:51,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:52,938 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 108 proven. 33 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-22 13:50:52,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411696885] [2020-12-22 13:50:52,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622705557] [2020-12-22 13:50:52,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:52:25,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 13:52:25,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:52:25,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 8103 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 13:52:25,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:52:26,425 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 108 proven. 33 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-22 13:52:26,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:52:26,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-12-22 13:52:26,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079709261] [2020-12-22 13:52:26,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 13:52:26,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:52:26,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 13:52:26,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:52:26,428 INFO L87 Difference]: Start difference. First operand 62745 states and 76945 transitions. Second operand 7 states. [2020-12-22 13:52:28,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:52:28,188 INFO L93 Difference]: Finished difference Result 126387 states and 154878 transitions. [2020-12-22 13:52:28,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:52:28,190 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 437 [2020-12-22 13:52:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:52:28,265 INFO L225 Difference]: With dead ends: 126387 [2020-12-22 13:52:28,265 INFO L226 Difference]: Without dead ends: 63705 [2020-12-22 13:52:28,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:52:28,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63705 states. [2020-12-22 13:52:30,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63705 to 63705. [2020-12-22 13:52:30,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63705 states. [2020-12-22 13:52:30,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63705 states to 63705 states and 77905 transitions. [2020-12-22 13:52:30,209 INFO L78 Accepts]: Start accepts. Automaton has 63705 states and 77905 transitions. Word has length 437 [2020-12-22 13:52:30,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:52:30,210 INFO L481 AbstractCegarLoop]: Abstraction has 63705 states and 77905 transitions. [2020-12-22 13:52:30,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 13:52:30,211 INFO L276 IsEmpty]: Start isEmpty. Operand 63705 states and 77905 transitions. [2020-12-22 13:52:30,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-12-22 13:52:30,224 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:52:30,225 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:52:30,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 13:52:30,439 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:52:30,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:52:30,441 INFO L82 PathProgramCache]: Analyzing trace with hash -143454738, now seen corresponding path program 3 times [2020-12-22 13:52:30,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:52:30,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311906077] [2020-12-22 13:52:30,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:52:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:52:31,650 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-12-22 13:52:31,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311906077] [2020-12-22 13:52:31,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179776788] [2020-12-22 13:52:31,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true