/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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 14:17:57,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 14:17:57,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 14:17:57,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 14:17:57,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 14:17:57,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 14:17:57,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 14:17:57,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 14:17:57,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 14:17:57,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 14:17:57,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 14:17:57,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 14:17:57,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 14:17:57,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 14:17:57,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 14:17:57,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 14:17:57,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 14:17:57,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 14:17:57,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 14:17:57,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 14:17:57,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 14:17:57,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 14:17:57,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 14:17:57,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 14:17:57,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 14:17:57,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 14:17:57,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 14:17:57,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 14:17:57,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 14:17:57,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 14:17:57,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 14:17:57,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 14:17:57,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 14:17:57,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 14:17:57,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 14:17:57,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 14:17:57,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 14:17:57,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 14:17:57,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 14:17:57,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 14:17:57,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 14:17:57,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 14:17:57,284 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 14:17:57,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 14:17:57,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 14:17:57,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 14:17:57,286 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 14:17:57,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 14:17:57,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 14:17:57,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 14:17:57,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 14:17:57,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 14:17:57,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 14:17:57,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 14:17:57,288 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 14:17:57,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 14:17:57,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 14:17:57,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 14:17:57,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 14:17:57,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:17:57,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 14:17:57,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 14:17:57,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 14:17:57,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 14:17:57,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 14:17:57,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 14:17:57,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 14:17:57,290 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 14:17:57,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 14:17:57,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 14:17:57,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 14:17:57,782 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 14:17:57,782 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 14:17:57,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2020-12-22 14:17:57,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9ecff4d1/f6263241ba4a46a8b9bdb5bb7aeb83f4/FLAGe3b62eae4 [2020-12-22 14:17:59,034 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 14:17:59,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2020-12-22 14:17:59,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9ecff4d1/f6263241ba4a46a8b9bdb5bb7aeb83f4/FLAGe3b62eae4 [2020-12-22 14:17:59,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9ecff4d1/f6263241ba4a46a8b9bdb5bb7aeb83f4 [2020-12-22 14:17:59,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 14:17:59,435 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 14:17:59,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 14:17:59,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 14:17:59,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 14:17:59,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:17:59" (1/1) ... [2020-12-22 14:17:59,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f615ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:17:59, skipping insertion in model container [2020-12-22 14:17:59,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:17:59" (1/1) ... [2020-12-22 14:17:59,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 14:17:59,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 14:18:01,221 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i[175998,176011] [2020-12-22 14:18:01,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:18:01,379 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 14:18:01,750 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i[175998,176011] [2020-12-22 14:18:01,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:18:02,212 INFO L208 MainTranslator]: Completed translation [2020-12-22 14:18:02,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:02 WrapperNode [2020-12-22 14:18:02,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 14:18:02,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 14:18:02,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 14:18:02,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 14:18:02,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:02" (1/1) ... [2020-12-22 14:18:02,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:02" (1/1) ... [2020-12-22 14:18:02,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 14:18:02,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 14:18:02,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 14:18:02,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 14:18:02,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:02" (1/1) ... [2020-12-22 14:18:02,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:02" (1/1) ... [2020-12-22 14:18:02,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:02" (1/1) ... [2020-12-22 14:18:02,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:02" (1/1) ... [2020-12-22 14:18:03,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:02" (1/1) ... [2020-12-22 14:18:03,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:02" (1/1) ... [2020-12-22 14:18:03,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:02" (1/1) ... [2020-12-22 14:18:03,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 14:18:03,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 14:18:03,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 14:18:03,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 14:18:03,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:18:03,649 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2020-12-22 14:18:03,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 14:18:03,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 14:18:03,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 14:18:03,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 14:18:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 14:18:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 14:18:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 14:18:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 14:18:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 14:18:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 14:18:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 14:18:03,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 14:18:36,532 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 14:18:36,533 INFO L299 CfgBuilder]: Removed 2381 assume(true) statements. [2020-12-22 14:18:36,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:18:36 BoogieIcfgContainer [2020-12-22 14:18:36,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 14:18:36,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 14:18:36,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 14:18:36,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 14:18:36,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:17:59" (1/3) ... [2020-12-22 14:18:36,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177be83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:18:36, skipping insertion in model container [2020-12-22 14:18:36,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:02" (2/3) ... [2020-12-22 14:18:36,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177be83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:18:36, skipping insertion in model container [2020-12-22 14:18:36,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:18:36" (3/3) ... [2020-12-22 14:18:36,549 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2020-12-22 14:18:36,556 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 14:18:36,565 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-12-22 14:18:36,587 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-12-22 14:18:36,628 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 14:18:36,629 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 14:18:36,629 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 14:18:36,629 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 14:18:36,629 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 14:18:36,629 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 14:18:36,629 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 14:18:36,629 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 14:18:36,696 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states. [2020-12-22 14:18:36,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 14:18:36,709 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:18:36,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:18:36,711 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:18:36,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:18:36,719 INFO L82 PathProgramCache]: Analyzing trace with hash -449056014, now seen corresponding path program 1 times [2020-12-22 14:18:36,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:18:36,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832847026] [2020-12-22 14:18:36,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:18:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:18:37,745 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 14:18:37,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832847026] [2020-12-22 14:18:37,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:18:37,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:18:37,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56490094] [2020-12-22 14:18:37,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:18:37,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:18:37,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:18:37,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:18:37,772 INFO L87 Difference]: Start difference. First operand 3163 states. Second operand 3 states. [2020-12-22 14:18:40,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:18:40,585 INFO L93 Difference]: Finished difference Result 9406 states and 13684 transitions. [2020-12-22 14:18:40,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:18:40,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-22 14:18:40,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:18:40,659 INFO L225 Difference]: With dead ends: 9406 [2020-12-22 14:18:40,659 INFO L226 Difference]: Without dead ends: 6234 [2020-12-22 14:18:40,678 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 14:18:40,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6234 states. [2020-12-22 14:18:41,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6234 to 6222. [2020-12-22 14:18:41,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6222 states. [2020-12-22 14:18:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 9028 transitions. [2020-12-22 14:18:41,263 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 9028 transitions. Word has length 14 [2020-12-22 14:18:41,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:18:41,263 INFO L481 AbstractCegarLoop]: Abstraction has 6222 states and 9028 transitions. [2020-12-22 14:18:41,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:18:41,264 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 9028 transitions. [2020-12-22 14:18:41,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 14:18:41,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:18:41,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:18:41,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 14:18:41,268 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:18:41,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:18:41,270 INFO L82 PathProgramCache]: Analyzing trace with hash 284486342, now seen corresponding path program 1 times [2020-12-22 14:18:41,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:18:41,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233186144] [2020-12-22 14:18:41,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:18:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:18:41,723 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 14:18:41,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233186144] [2020-12-22 14:18:41,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:18:41,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:18:41,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119151385] [2020-12-22 14:18:41,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:18:41,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:18:41,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:18:41,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:18:41,727 INFO L87 Difference]: Start difference. First operand 6222 states and 9028 transitions. Second operand 3 states. [2020-12-22 14:18:42,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:18:42,376 INFO L93 Difference]: Finished difference Result 18386 states and 26674 transitions. [2020-12-22 14:18:42,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:18:42,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-22 14:18:42,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:18:42,455 INFO L225 Difference]: With dead ends: 18386 [2020-12-22 14:18:42,456 INFO L226 Difference]: Without dead ends: 12167 [2020-12-22 14:18:42,475 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 14:18:42,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12167 states. [2020-12-22 14:18:42,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12167 to 12155. [2020-12-22 14:18:42,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12155 states. [2020-12-22 14:18:42,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12155 states to 12155 states and 17636 transitions. [2020-12-22 14:18:42,904 INFO L78 Accepts]: Start accepts. Automaton has 12155 states and 17636 transitions. Word has length 15 [2020-12-22 14:18:42,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:18:42,905 INFO L481 AbstractCegarLoop]: Abstraction has 12155 states and 17636 transitions. [2020-12-22 14:18:42,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:18:42,906 INFO L276 IsEmpty]: Start isEmpty. Operand 12155 states and 17636 transitions. [2020-12-22 14:18:42,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 14:18:42,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:18:42,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:18:42,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 14:18:42,914 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:18:42,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:18:42,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1022164411, now seen corresponding path program 1 times [2020-12-22 14:18:42,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:18:42,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190905390] [2020-12-22 14:18:42,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:18:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:18:43,299 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 14:18:43,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190905390] [2020-12-22 14:18:43,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:18:43,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:18:43,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371290134] [2020-12-22 14:18:43,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:18:43,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:18:43,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:18:43,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:18:43,302 INFO L87 Difference]: Start difference. First operand 12155 states and 17636 transitions. Second operand 3 states. [2020-12-22 14:18:43,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:18:43,673 INFO L93 Difference]: Finished difference Result 12155 states and 17636 transitions. [2020-12-22 14:18:43,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:18:43,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 14:18:43,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:18:43,758 INFO L225 Difference]: With dead ends: 12155 [2020-12-22 14:18:43,759 INFO L226 Difference]: Without dead ends: 12153 [2020-12-22 14:18:43,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 14:18:43,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12153 states. [2020-12-22 14:18:44,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12153 to 12153. [2020-12-22 14:18:44,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12153 states. [2020-12-22 14:18:44,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12153 states to 12153 states and 17634 transitions. [2020-12-22 14:18:44,206 INFO L78 Accepts]: Start accepts. Automaton has 12153 states and 17634 transitions. Word has length 19 [2020-12-22 14:18:44,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:18:44,207 INFO L481 AbstractCegarLoop]: Abstraction has 12153 states and 17634 transitions. [2020-12-22 14:18:44,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:18:44,207 INFO L276 IsEmpty]: Start isEmpty. Operand 12153 states and 17634 transitions. [2020-12-22 14:18:44,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 14:18:44,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:18:44,211 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] [2020-12-22 14:18:44,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 14:18:44,212 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:18:44,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:18:44,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1622342718, now seen corresponding path program 1 times [2020-12-22 14:18:44,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:18:44,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291771876] [2020-12-22 14:18:44,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:18:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:18:44,556 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 14:18:44,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291771876] [2020-12-22 14:18:44,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:18:44,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:18:44,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374127803] [2020-12-22 14:18:44,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:18:44,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:18:44,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:18:44,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:18:44,560 INFO L87 Difference]: Start difference. First operand 12153 states and 17634 transitions. Second operand 3 states. [2020-12-22 14:18:44,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:18:44,975 INFO L93 Difference]: Finished difference Result 12153 states and 17634 transitions. [2020-12-22 14:18:44,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:18:44,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-22 14:18:44,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:18:45,011 INFO L225 Difference]: With dead ends: 12153 [2020-12-22 14:18:45,011 INFO L226 Difference]: Without dead ends: 12151 [2020-12-22 14:18:45,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 14:18:45,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12151 states. [2020-12-22 14:18:45,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12151 to 12151. [2020-12-22 14:18:45,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12151 states. [2020-12-22 14:18:45,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12151 states to 12151 states and 17632 transitions. [2020-12-22 14:18:45,466 INFO L78 Accepts]: Start accepts. Automaton has 12151 states and 17632 transitions. Word has length 20 [2020-12-22 14:18:45,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:18:45,467 INFO L481 AbstractCegarLoop]: Abstraction has 12151 states and 17632 transitions. [2020-12-22 14:18:45,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:18:45,468 INFO L276 IsEmpty]: Start isEmpty. Operand 12151 states and 17632 transitions. [2020-12-22 14:18:45,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 14:18:45,468 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:18:45,469 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] [2020-12-22 14:18:45,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 14:18:45,469 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:18:45,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:18:45,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1246966235, now seen corresponding path program 1 times [2020-12-22 14:18:45,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:18:45,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983446038] [2020-12-22 14:18:45,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:18:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:18:45,836 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 14:18:45,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983446038] [2020-12-22 14:18:45,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:18:45,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:18:45,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425946827] [2020-12-22 14:18:45,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:18:45,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:18:45,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:18:45,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:18:45,847 INFO L87 Difference]: Start difference. First operand 12151 states and 17632 transitions. Second operand 3 states. [2020-12-22 14:18:46,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:18:46,717 INFO L93 Difference]: Finished difference Result 36379 states and 52814 transitions. [2020-12-22 14:18:46,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:18:46,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-22 14:18:46,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:18:46,783 INFO L225 Difference]: With dead ends: 36379 [2020-12-22 14:18:46,783 INFO L226 Difference]: Without dead ends: 24225 [2020-12-22 14:18:46,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 14:18:46,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24225 states. [2020-12-22 14:18:47,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24225 to 24195. [2020-12-22 14:18:47,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24195 states. [2020-12-22 14:18:47,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24195 states to 24195 states and 35133 transitions. [2020-12-22 14:18:47,601 INFO L78 Accepts]: Start accepts. Automaton has 24195 states and 35133 transitions. Word has length 21 [2020-12-22 14:18:47,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:18:47,601 INFO L481 AbstractCegarLoop]: Abstraction has 24195 states and 35133 transitions. [2020-12-22 14:18:47,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:18:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand 24195 states and 35133 transitions. [2020-12-22 14:18:47,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 14:18:47,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:18:47,603 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 14:18:47,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 14:18:47,604 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:18:47,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:18:47,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1452142114, now seen corresponding path program 1 times [2020-12-22 14:18:47,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:18:47,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022284057] [2020-12-22 14:18:47,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:18:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:18:48,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:18:48,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022284057] [2020-12-22 14:18:48,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:18:48,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:18:48,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674382183] [2020-12-22 14:18:48,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:18:48,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:18:48,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:18:48,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:18:48,070 INFO L87 Difference]: Start difference. First operand 24195 states and 35133 transitions. Second operand 4 states. [2020-12-22 14:18:51,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:18:51,204 INFO L93 Difference]: Finished difference Result 48400 states and 70277 transitions. [2020-12-22 14:18:51,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:18:51,205 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-12-22 14:18:51,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:18:51,277 INFO L225 Difference]: With dead ends: 48400 [2020-12-22 14:18:51,277 INFO L226 Difference]: Without dead ends: 24204 [2020-12-22 14:18:51,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:18:51,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24204 states. [2020-12-22 14:18:52,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24204 to 24197. [2020-12-22 14:18:52,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24197 states. [2020-12-22 14:18:52,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24197 states to 24197 states and 35131 transitions. [2020-12-22 14:18:52,209 INFO L78 Accepts]: Start accepts. Automaton has 24197 states and 35131 transitions. Word has length 38 [2020-12-22 14:18:52,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:18:52,210 INFO L481 AbstractCegarLoop]: Abstraction has 24197 states and 35131 transitions. [2020-12-22 14:18:52,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:18:52,210 INFO L276 IsEmpty]: Start isEmpty. Operand 24197 states and 35131 transitions. [2020-12-22 14:18:52,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 14:18:52,214 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:18:52,214 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 14:18:52,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 14:18:52,215 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:18:52,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:18:52,215 INFO L82 PathProgramCache]: Analyzing trace with hash 950886281, now seen corresponding path program 1 times [2020-12-22 14:18:52,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:18:52,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922483153] [2020-12-22 14:18:52,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:18:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:18:52,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:18:52,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922483153] [2020-12-22 14:18:52,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:18:52,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:18:52,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701121245] [2020-12-22 14:18:52,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:18:52,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:18:52,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:18:52,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:18:52,655 INFO L87 Difference]: Start difference. First operand 24197 states and 35131 transitions. Second operand 4 states. [2020-12-22 14:18:54,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:18:54,357 INFO L93 Difference]: Finished difference Result 72538 states and 105323 transitions. [2020-12-22 14:18:54,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:18:54,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-12-22 14:18:54,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:18:54,503 INFO L225 Difference]: With dead ends: 72538 [2020-12-22 14:18:54,504 INFO L226 Difference]: Without dead ends: 48344 [2020-12-22 14:18:54,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:18:54,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48344 states. [2020-12-22 14:18:56,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48344 to 24205. [2020-12-22 14:18:56,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24205 states. [2020-12-22 14:18:56,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24205 states to 24205 states and 35139 transitions. [2020-12-22 14:18:56,207 INFO L78 Accepts]: Start accepts. Automaton has 24205 states and 35139 transitions. Word has length 49 [2020-12-22 14:18:56,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:18:56,209 INFO L481 AbstractCegarLoop]: Abstraction has 24205 states and 35139 transitions. [2020-12-22 14:18:56,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:18:56,210 INFO L276 IsEmpty]: Start isEmpty. Operand 24205 states and 35139 transitions. [2020-12-22 14:18:56,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 14:18:56,214 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:18:56,214 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 14:18:56,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 14:18:56,215 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:18:56,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:18:56,216 INFO L82 PathProgramCache]: Analyzing trace with hash 374161665, now seen corresponding path program 1 times [2020-12-22 14:18:56,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:18:56,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452309077] [2020-12-22 14:18:56,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:18:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:18:56,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:18:56,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452309077] [2020-12-22 14:18:56,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:18:56,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:18:56,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251645912] [2020-12-22 14:18:56,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:18:56,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:18:56,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:18:56,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:18:56,542 INFO L87 Difference]: Start difference. First operand 24205 states and 35139 transitions. Second operand 3 states. [2020-12-22 14:19:01,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:19:01,057 INFO L93 Difference]: Finished difference Result 48183 states and 69939 transitions. [2020-12-22 14:19:01,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:19:01,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 14:19:01,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:19:01,133 INFO L225 Difference]: With dead ends: 48183 [2020-12-22 14:19:01,134 INFO L226 Difference]: Without dead ends: 23981 [2020-12-22 14:19:01,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 14:19:01,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23981 states. [2020-12-22 14:19:02,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23981 to 23981. [2020-12-22 14:19:02,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23981 states. [2020-12-22 14:19:02,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23981 states to 23981 states and 33647 transitions. [2020-12-22 14:19:02,347 INFO L78 Accepts]: Start accepts. Automaton has 23981 states and 33647 transitions. Word has length 51 [2020-12-22 14:19:02,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:19:02,349 INFO L481 AbstractCegarLoop]: Abstraction has 23981 states and 33647 transitions. [2020-12-22 14:19:02,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:19:02,349 INFO L276 IsEmpty]: Start isEmpty. Operand 23981 states and 33647 transitions. [2020-12-22 14:19:02,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 14:19:02,353 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:19:02,353 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 14:19:02,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 14:19:02,354 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:19:02,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:19:02,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1119219130, now seen corresponding path program 1 times [2020-12-22 14:19:02,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:19:02,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763300665] [2020-12-22 14:19:02,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:19:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:19:02,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:19:02,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763300665] [2020-12-22 14:19:02,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:19:02,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:19:02,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100726733] [2020-12-22 14:19:02,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:19:02,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:19:02,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:19:02,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:19:02,764 INFO L87 Difference]: Start difference. First operand 23981 states and 33647 transitions. Second operand 3 states. [2020-12-22 14:19:07,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:19:07,329 INFO L93 Difference]: Finished difference Result 71919 states and 100909 transitions. [2020-12-22 14:19:07,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:19:07,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 14:19:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:19:07,453 INFO L225 Difference]: With dead ends: 71919 [2020-12-22 14:19:07,453 INFO L226 Difference]: Without dead ends: 47941 [2020-12-22 14:19:07,509 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 14:19:07,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47941 states. [2020-12-22 14:19:09,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47941 to 47897. [2020-12-22 14:19:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47897 states. [2020-12-22 14:19:09,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47897 states to 47897 states and 67217 transitions. [2020-12-22 14:19:09,686 INFO L78 Accepts]: Start accepts. Automaton has 47897 states and 67217 transitions. Word has length 53 [2020-12-22 14:19:09,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:19:09,686 INFO L481 AbstractCegarLoop]: Abstraction has 47897 states and 67217 transitions. [2020-12-22 14:19:09,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:19:09,687 INFO L276 IsEmpty]: Start isEmpty. Operand 47897 states and 67217 transitions. [2020-12-22 14:19:09,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 14:19:09,690 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:19:09,691 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 14:19:09,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 14:19:09,691 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:19:09,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:19:09,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1124120767, now seen corresponding path program 1 times [2020-12-22 14:19:09,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:19:09,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782064437] [2020-12-22 14:19:09,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:19:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:19:09,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:19:09,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782064437] [2020-12-22 14:19:09,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:19:09,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:19:09,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568293530] [2020-12-22 14:19:09,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:19:09,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:19:09,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:19:09,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:19:09,991 INFO L87 Difference]: Start difference. First operand 47897 states and 67217 transitions. Second operand 3 states. [2020-12-22 14:19:14,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:19:14,639 INFO L93 Difference]: Finished difference Result 119645 states and 168028 transitions. [2020-12-22 14:19:14,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:19:14,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 14:19:14,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:19:14,788 INFO L225 Difference]: With dead ends: 119645 [2020-12-22 14:19:14,788 INFO L226 Difference]: Without dead ends: 71751 [2020-12-22 14:19:14,867 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 14:19:14,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71751 states. [2020-12-22 14:19:17,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71751 to 71741. [2020-12-22 14:19:17,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71741 states. [2020-12-22 14:19:17,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71741 states to 71741 states and 100637 transitions. [2020-12-22 14:19:17,544 INFO L78 Accepts]: Start accepts. Automaton has 71741 states and 100637 transitions. Word has length 55 [2020-12-22 14:19:17,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:19:17,545 INFO L481 AbstractCegarLoop]: Abstraction has 71741 states and 100637 transitions. [2020-12-22 14:19:17,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:19:17,545 INFO L276 IsEmpty]: Start isEmpty. Operand 71741 states and 100637 transitions. [2020-12-22 14:19:17,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 14:19:17,553 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:19:17,553 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-12-22 14:19:17,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 14:19:17,554 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:19:17,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:19:17,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1162698632, now seen corresponding path program 1 times [2020-12-22 14:19:17,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:19:17,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913433549] [2020-12-22 14:19:17,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:19:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:19:17,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:19:17,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913433549] [2020-12-22 14:19:17,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:19:17,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:19:17,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689180232] [2020-12-22 14:19:17,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:19:17,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:19:17,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:19:17,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:19:17,903 INFO L87 Difference]: Start difference. First operand 71741 states and 100637 transitions. Second operand 3 states. [2020-12-22 14:19:23,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:19:23,567 INFO L93 Difference]: Finished difference Result 167333 states and 234868 transitions. [2020-12-22 14:19:23,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:19:23,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 14:19:23,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:19:23,713 INFO L225 Difference]: With dead ends: 167333 [2020-12-22 14:19:23,714 INFO L226 Difference]: Without dead ends: 95595 [2020-12-22 14:19:23,779 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 14:19:23,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95595 states. [2020-12-22 14:19:27,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95595 to 95585. [2020-12-22 14:19:27,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95585 states. [2020-12-22 14:19:27,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95585 states to 95585 states and 134057 transitions. [2020-12-22 14:19:27,448 INFO L78 Accepts]: Start accepts. Automaton has 95585 states and 134057 transitions. Word has length 76 [2020-12-22 14:19:27,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:19:27,448 INFO L481 AbstractCegarLoop]: Abstraction has 95585 states and 134057 transitions. [2020-12-22 14:19:27,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:19:27,448 INFO L276 IsEmpty]: Start isEmpty. Operand 95585 states and 134057 transitions. [2020-12-22 14:19:27,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 14:19:27,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:19:27,464 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2020-12-22 14:19:27,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 14:19:27,465 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:19:27,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:19:27,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1113914449, now seen corresponding path program 1 times [2020-12-22 14:19:27,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:19:27,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824671305] [2020-12-22 14:19:27,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:19:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:19:28,042 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 14:19:28,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824671305] [2020-12-22 14:19:28,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:19:28,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:19:28,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674796415] [2020-12-22 14:19:28,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:19:28,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:19:28,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:19:28,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:19:28,046 INFO L87 Difference]: Start difference. First operand 95585 states and 134057 transitions. Second operand 3 states. [2020-12-22 14:19:34,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:19:34,342 INFO L93 Difference]: Finished difference Result 215021 states and 301708 transitions. [2020-12-22 14:19:34,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:19:34,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-12-22 14:19:34,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:19:34,575 INFO L225 Difference]: With dead ends: 215021 [2020-12-22 14:19:34,576 INFO L226 Difference]: Without dead ends: 119439 [2020-12-22 14:19:34,671 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 14:19:34,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119439 states. [2020-12-22 14:19:38,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119439 to 119429. [2020-12-22 14:19:38,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119429 states. [2020-12-22 14:19:38,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119429 states to 119429 states and 167477 transitions. [2020-12-22 14:19:38,862 INFO L78 Accepts]: Start accepts. Automaton has 119429 states and 167477 transitions. Word has length 88 [2020-12-22 14:19:38,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:19:38,863 INFO L481 AbstractCegarLoop]: Abstraction has 119429 states and 167477 transitions. [2020-12-22 14:19:38,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:19:38,863 INFO L276 IsEmpty]: Start isEmpty. Operand 119429 states and 167477 transitions. [2020-12-22 14:19:38,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 14:19:38,874 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:19:38,874 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2020-12-22 14:19:38,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 14:19:38,874 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:19:38,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:19:38,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1700720463, now seen corresponding path program 1 times [2020-12-22 14:19:38,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:19:38,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53547470] [2020-12-22 14:19:38,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:19:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:19:39,190 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 14:19:39,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53547470] [2020-12-22 14:19:39,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:19:39,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:19:39,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801997613] [2020-12-22 14:19:39,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:19:39,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:19:39,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:19:39,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:19:39,195 INFO L87 Difference]: Start difference. First operand 119429 states and 167477 transitions. Second operand 4 states. [2020-12-22 14:19:44,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:19:44,823 INFO L93 Difference]: Finished difference Result 268649 states and 376680 transitions. [2020-12-22 14:19:44,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:19:44,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-12-22 14:19:44,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:19:45,100 INFO L225 Difference]: With dead ends: 268649 [2020-12-22 14:19:45,100 INFO L226 Difference]: Without dead ends: 149223 [2020-12-22 14:19:45,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:19:45,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149223 states. [2020-12-22 14:19:49,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149223 to 119429. [2020-12-22 14:19:49,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119429 states. [2020-12-22 14:19:49,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119429 states to 119429 states and 167473 transitions. [2020-12-22 14:19:49,914 INFO L78 Accepts]: Start accepts. Automaton has 119429 states and 167473 transitions. Word has length 88 [2020-12-22 14:19:49,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:19:49,915 INFO L481 AbstractCegarLoop]: Abstraction has 119429 states and 167473 transitions. [2020-12-22 14:19:49,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:19:49,915 INFO L276 IsEmpty]: Start isEmpty. Operand 119429 states and 167473 transitions. [2020-12-22 14:19:49,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 14:19:49,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:19:49,923 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-12-22 14:19:49,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 14:19:49,923 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:19:49,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:19:49,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1848661459, now seen corresponding path program 1 times [2020-12-22 14:19:49,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:19:49,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063300126] [2020-12-22 14:19:49,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:19:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:19:50,542 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 14:19:50,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063300126] [2020-12-22 14:19:50,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866923053] [2020-12-22 14:19:50,543 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 14:19:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:19:52,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 3651 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 14:19:52,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 14:19:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 14:19:52,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 14:19:52,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2020-12-22 14:19:52,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819314521] [2020-12-22 14:19:52,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 14:19:52,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:19:52,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 14:19:52,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 14:19:52,691 INFO L87 Difference]: Start difference. First operand 119429 states and 167473 transitions. Second operand 6 states. [2020-12-22 14:20:00,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:20:00,821 INFO L93 Difference]: Finished difference Result 238885 states and 334976 transitions. [2020-12-22 14:20:00,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 14:20:00,822 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-12-22 14:20:00,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:20:01,160 INFO L225 Difference]: With dead ends: 238885 [2020-12-22 14:20:01,160 INFO L226 Difference]: Without dead ends: 119439 [2020-12-22 14:20:01,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-12-22 14:20:01,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119439 states. [2020-12-22 14:20:05,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119439 to 119391. [2020-12-22 14:20:05,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119391 states. [2020-12-22 14:20:05,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119391 states to 119391 states and 167415 transitions. [2020-12-22 14:20:05,921 INFO L78 Accepts]: Start accepts. Automaton has 119391 states and 167415 transitions. Word has length 89 [2020-12-22 14:20:05,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:20:05,922 INFO L481 AbstractCegarLoop]: Abstraction has 119391 states and 167415 transitions. [2020-12-22 14:20:05,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 14:20:05,922 INFO L276 IsEmpty]: Start isEmpty. Operand 119391 states and 167415 transitions. [2020-12-22 14:20:05,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 14:20:05,942 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:20:05,943 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-12-22 14:20:06,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 14:20:06,157 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:20:06,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:20:06,157 INFO L82 PathProgramCache]: Analyzing trace with hash -513862159, now seen corresponding path program 1 times [2020-12-22 14:20:06,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:20:06,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080888463] [2020-12-22 14:20:06,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:20:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:20:06,768 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 14:20:06,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080888463] [2020-12-22 14:20:06,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93573810] [2020-12-22 14:20:06,769 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 14:20:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:20:08,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 3716 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 14:20:08,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 14:20:08,836 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 14:20:08,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 14:20:08,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2020-12-22 14:20:08,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036565759] [2020-12-22 14:20:08,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:20:08,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:20:08,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:20:08,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:20:08,838 INFO L87 Difference]: Start difference. First operand 119391 states and 167415 transitions. Second operand 4 states. [2020-12-22 14:20:21,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:20:21,483 INFO L93 Difference]: Finished difference Result 358169 states and 502240 transitions. [2020-12-22 14:20:21,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:20:21,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-12-22 14:20:21,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:20:22,453 INFO L225 Difference]: With dead ends: 358169 [2020-12-22 14:20:22,453 INFO L226 Difference]: Without dead ends: 358161 [2020-12-22 14:20:22,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:20:22,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358161 states. [2020-12-22 14:20:35,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358161 to 358063. [2020-12-22 14:20:35,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358063 states. [2020-12-22 14:20:37,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358063 states to 358063 states and 502133 transitions. [2020-12-22 14:20:37,848 INFO L78 Accepts]: Start accepts. Automaton has 358063 states and 502133 transitions. Word has length 92 [2020-12-22 14:20:37,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:20:37,849 INFO L481 AbstractCegarLoop]: Abstraction has 358063 states and 502133 transitions. [2020-12-22 14:20:37,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:20:37,849 INFO L276 IsEmpty]: Start isEmpty. Operand 358063 states and 502133 transitions. [2020-12-22 14:20:37,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 14:20:37,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:20:37,897 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2020-12-22 14:20:38,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 14:20:38,111 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:20:38,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:20:38,112 INFO L82 PathProgramCache]: Analyzing trace with hash -2049588382, now seen corresponding path program 1 times [2020-12-22 14:20:38,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:20:38,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707329902] [2020-12-22 14:20:38,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:20:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:20:38,681 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 14:20:38,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707329902] [2020-12-22 14:20:38,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:20:38,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:20:38,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470718803] [2020-12-22 14:20:38,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:20:38,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:20:38,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:20:38,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:20:38,685 INFO L87 Difference]: Start difference. First operand 358063 states and 502133 transitions. Second operand 4 states. [2020-12-22 14:20:58,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:20:58,251 INFO L93 Difference]: Finished difference Result 805451 states and 1129369 transitions. [2020-12-22 14:20:58,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:20:58,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-12-22 14:20:58,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:20:59,291 INFO L225 Difference]: With dead ends: 805451 [2020-12-22 14:20:59,293 INFO L226 Difference]: Without dead ends: 447391 [2020-12-22 14:20:59,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:21:00,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447391 states. [2020-12-22 14:21:14,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447391 to 358063. [2020-12-22 14:21:14,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358063 states. [2020-12-22 14:21:15,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358063 states to 358063 states and 502121 transitions. [2020-12-22 14:21:15,340 INFO L78 Accepts]: Start accepts. Automaton has 358063 states and 502121 transitions. Word has length 92 [2020-12-22 14:21:15,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:21:15,341 INFO L481 AbstractCegarLoop]: Abstraction has 358063 states and 502121 transitions. [2020-12-22 14:21:15,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:21:15,341 INFO L276 IsEmpty]: Start isEmpty. Operand 358063 states and 502121 transitions. [2020-12-22 14:21:15,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 14:21:15,367 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:21:15,367 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2020-12-22 14:21:15,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 14:21:15,374 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:21:15,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:21:15,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1462782368, now seen corresponding path program 1 times [2020-12-22 14:21:15,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:21:15,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015093936] [2020-12-22 14:21:15,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY