/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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 12:50:42,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 12:50:42,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 12:50:42,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 12:50:42,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 12:50:42,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 12:50:42,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 12:50:42,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 12:50:42,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 12:50:42,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 12:50:42,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 12:50:42,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 12:50:42,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 12:50:42,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 12:50:42,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 12:50:42,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 12:50:42,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 12:50:42,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 12:50:42,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 12:50:42,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 12:50:42,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 12:50:42,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 12:50:42,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 12:50:42,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 12:50:42,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 12:50:42,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 12:50:42,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 12:50:42,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 12:50:42,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 12:50:42,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 12:50:42,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 12:50:42,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 12:50:42,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 12:50:42,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 12:50:42,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 12:50:42,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 12:50:42,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 12:50:42,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 12:50:42,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 12:50:42,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 12:50:42,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 12:50:42,396 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 12:50:42,434 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 12:50:42,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 12:50:42,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 12:50:42,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 12:50:42,440 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 12:50:42,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 12:50:42,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 12:50:42,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 12:50:42,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 12:50:42,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 12:50:42,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 12:50:42,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 12:50:42,443 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 12:50:42,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 12:50:42,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 12:50:42,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 12:50:42,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 12:50:42,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 12:50:42,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 12:50:42,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 12:50:42,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 12:50:42,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 12:50:42,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 12:50:42,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 12:50:42,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 12:50:42,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 12:50:42,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 12:50:42,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 12:50:42,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 12:50:42,921 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 12:50:42,922 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 12:50:42,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2020-12-22 12:50:43,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f54c7bdc/0feb513c44df4ea4a81c60020ade1f50/FLAG06ea32666 [2020-12-22 12:50:43,999 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 12:50:44,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2020-12-22 12:50:44,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f54c7bdc/0feb513c44df4ea4a81c60020ade1f50/FLAG06ea32666 [2020-12-22 12:50:44,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f54c7bdc/0feb513c44df4ea4a81c60020ade1f50 [2020-12-22 12:50:44,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 12:50:44,445 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 12:50:44,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 12:50:44,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 12:50:44,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 12:50:44,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:50:44" (1/1) ... [2020-12-22 12:50:44,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@514885d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:50:44, skipping insertion in model container [2020-12-22 12:50:44,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:50:44" (1/1) ... [2020-12-22 12:50:44,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 12:50:44,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 12:50:45,602 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2020-12-22 12:50:45,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 12:50:45,767 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 12:50:45,998 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2020-12-22 12:50:46,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 12:50:46,455 INFO L208 MainTranslator]: Completed translation [2020-12-22 12:50:46,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:50:46 WrapperNode [2020-12-22 12:50:46,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 12:50:46,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 12:50:46,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 12:50:46,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 12:50:46,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:50:46" (1/1) ... [2020-12-22 12:50:46,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:50:46" (1/1) ... [2020-12-22 12:50:47,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 12:50:47,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 12:50:47,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 12:50:47,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 12:50:47,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:50:46" (1/1) ... [2020-12-22 12:50:47,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:50:46" (1/1) ... [2020-12-22 12:50:47,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:50:46" (1/1) ... [2020-12-22 12:50:47,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:50:46" (1/1) ... [2020-12-22 12:50:47,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:50:46" (1/1) ... [2020-12-22 12:50:47,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:50:46" (1/1) ... [2020-12-22 12:50:47,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:50:46" (1/1) ... [2020-12-22 12:50:47,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 12:50:47,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 12:50:47,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 12:50:47,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 12:50:47,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:50:46" (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 12:50:47,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 12:50:47,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 12:50:47,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 12:50:47,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 12:50:47,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 12:50:47,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 12:50:47,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 12:50:47,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 12:50:47,971 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2020-12-22 12:50:47,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 12:50:47,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 12:50:47,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 12:51:46,010 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 12:51:46,011 INFO L299 CfgBuilder]: Removed 1211 assume(true) statements. [2020-12-22 12:51:46,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:51:46 BoogieIcfgContainer [2020-12-22 12:51:46,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 12:51:46,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 12:51:46,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 12:51:46,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 12:51:46,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:50:44" (1/3) ... [2020-12-22 12:51:46,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109ae71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:51:46, skipping insertion in model container [2020-12-22 12:51:46,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:50:46" (2/3) ... [2020-12-22 12:51:46,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109ae71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:51:46, skipping insertion in model container [2020-12-22 12:51:46,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:51:46" (3/3) ... [2020-12-22 12:51:46,029 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2020-12-22 12:51:46,037 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 12:51:46,043 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 12:51:46,064 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 12:51:46,101 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 12:51:46,101 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 12:51:46,102 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 12:51:46,102 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 12:51:46,102 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 12:51:46,102 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 12:51:46,102 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 12:51:46,102 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 12:51:46,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states. [2020-12-22 12:51:46,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 12:51:46,155 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:46,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:51:46,157 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:46,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:46,165 INFO L82 PathProgramCache]: Analyzing trace with hash 12375506, now seen corresponding path program 1 times [2020-12-22 12:51:46,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:46,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547185473] [2020-12-22 12:51:46,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:48,182 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 12:51:48,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547185473] [2020-12-22 12:51:48,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:51:48,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:51:48,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096209122] [2020-12-22 12:51:48,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:48,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:48,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:48,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:51:48,215 INFO L87 Difference]: Start difference. First operand 1381 states. Second operand 3 states. [2020-12-22 12:51:51,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:51,050 INFO L93 Difference]: Finished difference Result 4047 states and 5536 transitions. [2020-12-22 12:51:51,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:51,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-22 12:51:51,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:51,089 INFO L225 Difference]: With dead ends: 4047 [2020-12-22 12:51:51,089 INFO L226 Difference]: Without dead ends: 2665 [2020-12-22 12:51:51,101 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 12:51:51,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2020-12-22 12:51:51,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2649. [2020-12-22 12:51:51,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2649 states. [2020-12-22 12:51:51,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 3593 transitions. [2020-12-22 12:51:51,306 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 3593 transitions. Word has length 14 [2020-12-22 12:51:51,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:51,306 INFO L481 AbstractCegarLoop]: Abstraction has 2649 states and 3593 transitions. [2020-12-22 12:51:51,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:51,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 3593 transitions. [2020-12-22 12:51:51,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 12:51:51,310 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:51,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:51:51,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 12:51:51,311 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:51,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:51,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1358126481, now seen corresponding path program 1 times [2020-12-22 12:51:51,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:51,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314424442] [2020-12-22 12:51:51,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:52,540 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 12:51:52,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314424442] [2020-12-22 12:51:52,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:51:52,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:51:52,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57102510] [2020-12-22 12:51:52,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:52,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:52,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:52,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:51:52,546 INFO L87 Difference]: Start difference. First operand 2649 states and 3593 transitions. Second operand 3 states. [2020-12-22 12:51:53,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:53,307 INFO L93 Difference]: Finished difference Result 7634 states and 10327 transitions. [2020-12-22 12:51:53,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:53,308 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-22 12:51:53,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:53,334 INFO L225 Difference]: With dead ends: 7634 [2020-12-22 12:51:53,334 INFO L226 Difference]: Without dead ends: 4988 [2020-12-22 12:51:53,340 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 12:51:53,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2020-12-22 12:51:53,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 4972. [2020-12-22 12:51:53,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4972 states. [2020-12-22 12:51:53,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4972 states to 4972 states and 6722 transitions. [2020-12-22 12:51:53,529 INFO L78 Accepts]: Start accepts. Automaton has 4972 states and 6722 transitions. Word has length 15 [2020-12-22 12:51:53,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:53,530 INFO L481 AbstractCegarLoop]: Abstraction has 4972 states and 6722 transitions. [2020-12-22 12:51:53,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:53,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4972 states and 6722 transitions. [2020-12-22 12:51:53,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 12:51:53,539 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:53,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:51:53,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 12:51:53,542 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:53,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:53,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1461430461, now seen corresponding path program 1 times [2020-12-22 12:51:53,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:53,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428254905] [2020-12-22 12:51:53,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:54,840 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 12:51:54,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428254905] [2020-12-22 12:51:54,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:51:54,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 12:51:54,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203723745] [2020-12-22 12:51:54,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 12:51:54,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:54,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 12:51:54,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 12:51:54,844 INFO L87 Difference]: Start difference. First operand 4972 states and 6722 transitions. Second operand 6 states. [2020-12-22 12:51:56,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:56,683 INFO L93 Difference]: Finished difference Result 24702 states and 33402 transitions. [2020-12-22 12:51:56,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 12:51:56,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-12-22 12:51:56,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:56,815 INFO L225 Difference]: With dead ends: 24702 [2020-12-22 12:51:56,816 INFO L226 Difference]: Without dead ends: 19733 [2020-12-22 12:51:56,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-12-22 12:51:56,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19733 states. [2020-12-22 12:51:57,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19733 to 5014. [2020-12-22 12:51:57,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5014 states. [2020-12-22 12:51:57,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 6774 transitions. [2020-12-22 12:51:57,351 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 6774 transitions. Word has length 23 [2020-12-22 12:51:57,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:57,351 INFO L481 AbstractCegarLoop]: Abstraction has 5014 states and 6774 transitions. [2020-12-22 12:51:57,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 12:51:57,352 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 6774 transitions. [2020-12-22 12:51:57,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 12:51:57,355 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:57,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:51:57,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 12:51:57,356 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:57,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:57,357 INFO L82 PathProgramCache]: Analyzing trace with hash 874624447, now seen corresponding path program 1 times [2020-12-22 12:51:57,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:57,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624093911] [2020-12-22 12:51:57,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:51:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:51:58,465 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 12:51:58,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624093911] [2020-12-22 12:51:58,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:51:58,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:51:58,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622444935] [2020-12-22 12:51:58,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:51:58,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:51:58,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:51:58,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:51:58,470 INFO L87 Difference]: Start difference. First operand 5014 states and 6774 transitions. Second operand 3 states. [2020-12-22 12:51:59,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:51:59,232 INFO L93 Difference]: Finished difference Result 5032 states and 6790 transitions. [2020-12-22 12:51:59,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:51:59,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 12:51:59,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:51:59,246 INFO L225 Difference]: With dead ends: 5032 [2020-12-22 12:51:59,246 INFO L226 Difference]: Without dead ends: 5023 [2020-12-22 12:51:59,249 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 12:51:59,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5023 states. [2020-12-22 12:51:59,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5023 to 5014. [2020-12-22 12:51:59,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5014 states. [2020-12-22 12:51:59,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 6773 transitions. [2020-12-22 12:51:59,557 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 6773 transitions. Word has length 23 [2020-12-22 12:51:59,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:51:59,558 INFO L481 AbstractCegarLoop]: Abstraction has 5014 states and 6773 transitions. [2020-12-22 12:51:59,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:51:59,558 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 6773 transitions. [2020-12-22 12:51:59,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 12:51:59,560 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:51:59,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:51:59,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 12:51:59,560 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:51:59,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:51:59,561 INFO L82 PathProgramCache]: Analyzing trace with hash 874684029, now seen corresponding path program 1 times [2020-12-22 12:51:59,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:51:59,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814710735] [2020-12-22 12:51:59,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:52:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:52:00,576 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 12:52:00,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814710735] [2020-12-22 12:52:00,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:52:00,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:52:00,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760002261] [2020-12-22 12:52:00,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:52:00,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:52:00,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:52:00,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:52:00,581 INFO L87 Difference]: Start difference. First operand 5014 states and 6773 transitions. Second operand 3 states. [2020-12-22 12:52:03,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:52:03,375 INFO L93 Difference]: Finished difference Result 5014 states and 6773 transitions. [2020-12-22 12:52:03,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:52:03,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 12:52:03,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:52:03,388 INFO L225 Difference]: With dead ends: 5014 [2020-12-22 12:52:03,388 INFO L226 Difference]: Without dead ends: 5012 [2020-12-22 12:52:03,391 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 12:52:03,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2020-12-22 12:52:03,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 5012. [2020-12-22 12:52:03,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5012 states. [2020-12-22 12:52:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5012 states to 5012 states and 6771 transitions. [2020-12-22 12:52:03,667 INFO L78 Accepts]: Start accepts. Automaton has 5012 states and 6771 transitions. Word has length 23 [2020-12-22 12:52:03,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:52:03,667 INFO L481 AbstractCegarLoop]: Abstraction has 5012 states and 6771 transitions. [2020-12-22 12:52:03,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:52:03,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5012 states and 6771 transitions. [2020-12-22 12:52:03,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 12:52:03,669 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:52:03,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:52:03,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 12:52:03,669 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:52:03,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:52:03,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1345403867, now seen corresponding path program 1 times [2020-12-22 12:52:03,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:52:03,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417136593] [2020-12-22 12:52:03,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:52:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:52:04,511 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 12:52:04,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417136593] [2020-12-22 12:52:04,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:52:04,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:52:04,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276914245] [2020-12-22 12:52:04,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:52:04,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:52:04,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:52:04,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:52:04,514 INFO L87 Difference]: Start difference. First operand 5012 states and 6771 transitions. Second operand 3 states. [2020-12-22 12:52:07,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:52:07,259 INFO L93 Difference]: Finished difference Result 5012 states and 6771 transitions. [2020-12-22 12:52:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:52:07,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 12:52:07,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:52:07,272 INFO L225 Difference]: With dead ends: 5012 [2020-12-22 12:52:07,272 INFO L226 Difference]: Without dead ends: 5010 [2020-12-22 12:52:07,275 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 12:52:07,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5010 states. [2020-12-22 12:52:07,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5010 to 5010. [2020-12-22 12:52:07,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5010 states. [2020-12-22 12:52:07,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5010 states to 5010 states and 6769 transitions. [2020-12-22 12:52:07,573 INFO L78 Accepts]: Start accepts. Automaton has 5010 states and 6769 transitions. Word has length 24 [2020-12-22 12:52:07,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:52:07,575 INFO L481 AbstractCegarLoop]: Abstraction has 5010 states and 6769 transitions. [2020-12-22 12:52:07,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:52:07,579 INFO L276 IsEmpty]: Start isEmpty. Operand 5010 states and 6769 transitions. [2020-12-22 12:52:07,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 12:52:07,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:52:07,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:52:07,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 12:52:07,587 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:52:07,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:52:07,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1242150329, now seen corresponding path program 1 times [2020-12-22 12:52:07,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:52:07,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818343498] [2020-12-22 12:52:07,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:52:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:52:08,436 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 12:52:08,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818343498] [2020-12-22 12:52:08,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:52:08,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:52:08,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895378905] [2020-12-22 12:52:08,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:52:08,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:52:08,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:52:08,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:52:08,451 INFO L87 Difference]: Start difference. First operand 5010 states and 6769 transitions. Second operand 3 states. [2020-12-22 12:52:11,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:52:11,292 INFO L93 Difference]: Finished difference Result 11424 states and 15459 transitions. [2020-12-22 12:52:11,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:52:11,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 12:52:11,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:52:11,310 INFO L225 Difference]: With dead ends: 11424 [2020-12-22 12:52:11,310 INFO L226 Difference]: Without dead ends: 6411 [2020-12-22 12:52:11,320 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 12:52:11,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2020-12-22 12:52:11,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 6381. [2020-12-22 12:52:11,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6381 states. [2020-12-22 12:52:11,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 8637 transitions. [2020-12-22 12:52:11,747 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 8637 transitions. Word has length 25 [2020-12-22 12:52:11,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:52:11,749 INFO L481 AbstractCegarLoop]: Abstraction has 6381 states and 8637 transitions. [2020-12-22 12:52:11,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:52:11,750 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 8637 transitions. [2020-12-22 12:52:11,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 12:52:11,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:52:11,755 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] [2020-12-22 12:52:11,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 12:52:11,755 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:52:11,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:52:11,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1456826833, now seen corresponding path program 1 times [2020-12-22 12:52:11,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:52:11,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847018468] [2020-12-22 12:52:11,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:52:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:52:12,741 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 12:52:12,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847018468] [2020-12-22 12:52:12,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:52:12,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:52:12,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353318303] [2020-12-22 12:52:12,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:52:12,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:52:12,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:52:12,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:52:12,744 INFO L87 Difference]: Start difference. First operand 6381 states and 8637 transitions. Second operand 3 states. [2020-12-22 12:52:15,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:52:15,989 INFO L93 Difference]: Finished difference Result 15863 states and 21540 transitions. [2020-12-22 12:52:15,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:52:15,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-12-22 12:52:15,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:52:16,015 INFO L225 Difference]: With dead ends: 15863 [2020-12-22 12:52:16,016 INFO L226 Difference]: Without dead ends: 9485 [2020-12-22 12:52:16,031 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 12:52:16,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9485 states. [2020-12-22 12:52:16,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9485 to 9473. [2020-12-22 12:52:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9473 states. [2020-12-22 12:52:16,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9473 states to 9473 states and 12813 transitions. [2020-12-22 12:52:16,526 INFO L78 Accepts]: Start accepts. Automaton has 9473 states and 12813 transitions. Word has length 33 [2020-12-22 12:52:16,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:52:16,527 INFO L481 AbstractCegarLoop]: Abstraction has 9473 states and 12813 transitions. [2020-12-22 12:52:16,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:52:16,527 INFO L276 IsEmpty]: Start isEmpty. Operand 9473 states and 12813 transitions. [2020-12-22 12:52:16,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 12:52:16,529 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:52:16,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:52:16,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 12:52:16,529 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:52:16,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:52:16,530 INFO L82 PathProgramCache]: Analyzing trace with hash -2053211790, now seen corresponding path program 1 times [2020-12-22 12:52:16,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:52:16,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438064083] [2020-12-22 12:52:16,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:52:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:52:17,377 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 12:52:17,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438064083] [2020-12-22 12:52:17,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:52:17,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:52:17,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478359557] [2020-12-22 12:52:17,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:52:17,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:52:17,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:52:17,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:52:17,388 INFO L87 Difference]: Start difference. First operand 9473 states and 12813 transitions. Second operand 3 states. [2020-12-22 12:52:18,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:52:18,466 INFO L93 Difference]: Finished difference Result 20290 states and 27570 transitions. [2020-12-22 12:52:18,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:52:18,467 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-12-22 12:52:18,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:52:18,501 INFO L225 Difference]: With dead ends: 20290 [2020-12-22 12:52:18,501 INFO L226 Difference]: Without dead ends: 10820 [2020-12-22 12:52:18,520 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 12:52:18,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10820 states. [2020-12-22 12:52:19,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10820 to 10765. [2020-12-22 12:52:19,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10765 states. [2020-12-22 12:52:19,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10765 states to 10765 states and 14697 transitions. [2020-12-22 12:52:19,043 INFO L78 Accepts]: Start accepts. Automaton has 10765 states and 14697 transitions. Word has length 45 [2020-12-22 12:52:19,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:52:19,043 INFO L481 AbstractCegarLoop]: Abstraction has 10765 states and 14697 transitions. [2020-12-22 12:52:19,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:52:19,044 INFO L276 IsEmpty]: Start isEmpty. Operand 10765 states and 14697 transitions. [2020-12-22 12:52:19,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 12:52:19,047 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:52:19,047 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] [2020-12-22 12:52:19,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 12:52:19,048 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:52:19,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:52:19,048 INFO L82 PathProgramCache]: Analyzing trace with hash -234060580, now seen corresponding path program 1 times [2020-12-22 12:52:19,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:52:19,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397723420] [2020-12-22 12:52:19,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:52:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:52:20,057 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 12:52:20,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397723420] [2020-12-22 12:52:20,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:52:20,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:52:20,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740710525] [2020-12-22 12:52:20,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:52:20,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:52:20,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:52:20,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:52:20,066 INFO L87 Difference]: Start difference. First operand 10765 states and 14697 transitions. Second operand 3 states. [2020-12-22 12:52:23,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:52:23,513 INFO L93 Difference]: Finished difference Result 25013 states and 34292 transitions. [2020-12-22 12:52:23,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:52:23,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 12:52:23,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:52:23,562 INFO L225 Difference]: With dead ends: 25013 [2020-12-22 12:52:23,562 INFO L226 Difference]: Without dead ends: 14251 [2020-12-22 12:52:23,582 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 12:52:23,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14251 states. [2020-12-22 12:52:24,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14251 to 14239. [2020-12-22 12:52:24,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14239 states. [2020-12-22 12:52:24,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14239 states to 14239 states and 19421 transitions. [2020-12-22 12:52:24,263 INFO L78 Accepts]: Start accepts. Automaton has 14239 states and 19421 transitions. Word has length 54 [2020-12-22 12:52:24,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:52:24,264 INFO L481 AbstractCegarLoop]: Abstraction has 14239 states and 19421 transitions. [2020-12-22 12:52:24,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:52:24,264 INFO L276 IsEmpty]: Start isEmpty. Operand 14239 states and 19421 transitions. [2020-12-22 12:52:24,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 12:52:24,268 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:52:24,268 INFO L422 BasicCegarLoop]: trace histogram [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 12:52:24,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 12:52:24,268 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:52:24,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:52:24,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1153792279, now seen corresponding path program 1 times [2020-12-22 12:52:24,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:52:24,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119851387] [2020-12-22 12:52:24,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:52:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:52:25,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 12:52:25,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119851387] [2020-12-22 12:52:25,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:52:25,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:52:25,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139864955] [2020-12-22 12:52:25,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:52:25,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:52:25,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:52:25,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:52:25,211 INFO L87 Difference]: Start difference. First operand 14239 states and 19421 transitions. Second operand 3 states. [2020-12-22 12:52:25,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:52:25,940 INFO L93 Difference]: Finished difference Result 28483 states and 38855 transitions. [2020-12-22 12:52:25,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:52:25,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 12:52:25,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:52:25,984 INFO L225 Difference]: With dead ends: 28483 [2020-12-22 12:52:25,984 INFO L226 Difference]: Without dead ends: 14247 [2020-12-22 12:52:26,008 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 12:52:26,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14247 states. [2020-12-22 12:52:26,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14247 to 14247. [2020-12-22 12:52:26,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14247 states. [2020-12-22 12:52:26,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14247 states to 14247 states and 19429 transitions. [2020-12-22 12:52:26,702 INFO L78 Accepts]: Start accepts. Automaton has 14247 states and 19429 transitions. Word has length 69 [2020-12-22 12:52:26,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:52:26,704 INFO L481 AbstractCegarLoop]: Abstraction has 14247 states and 19429 transitions. [2020-12-22 12:52:26,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:52:26,704 INFO L276 IsEmpty]: Start isEmpty. Operand 14247 states and 19429 transitions. [2020-12-22 12:52:26,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 12:52:26,708 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:52:26,709 INFO L422 BasicCegarLoop]: trace histogram [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 12:52:26,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 12:52:26,709 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:52:26,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:52:26,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1155639321, now seen corresponding path program 1 times [2020-12-22 12:52:26,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:52:26,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259499415] [2020-12-22 12:52:26,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:52:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:52:27,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 12:52:27,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259499415] [2020-12-22 12:52:27,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:52:27,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:52:27,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423581942] [2020-12-22 12:52:27,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:52:27,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:52:27,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:52:27,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:52:27,745 INFO L87 Difference]: Start difference. First operand 14247 states and 19429 transitions. Second operand 3 states. [2020-12-22 12:52:30,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:52:30,759 INFO L93 Difference]: Finished difference Result 28489 states and 38854 transitions. [2020-12-22 12:52:30,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:52:30,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 12:52:30,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:52:30,787 INFO L225 Difference]: With dead ends: 28489 [2020-12-22 12:52:30,788 INFO L226 Difference]: Without dead ends: 14245 [2020-12-22 12:52:30,807 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 12:52:30,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14245 states. [2020-12-22 12:52:31,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14245 to 14108. [2020-12-22 12:52:31,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14108 states. [2020-12-22 12:52:31,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14108 states to 14108 states and 19235 transitions. [2020-12-22 12:52:31,560 INFO L78 Accepts]: Start accepts. Automaton has 14108 states and 19235 transitions. Word has length 69 [2020-12-22 12:52:31,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:52:31,560 INFO L481 AbstractCegarLoop]: Abstraction has 14108 states and 19235 transitions. [2020-12-22 12:52:31,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:52:31,560 INFO L276 IsEmpty]: Start isEmpty. Operand 14108 states and 19235 transitions. [2020-12-22 12:52:31,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 12:52:31,565 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:52:31,566 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] [2020-12-22 12:52:31,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 12:52:31,566 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:52:31,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:52:31,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1383268386, now seen corresponding path program 1 times [2020-12-22 12:52:31,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:52:31,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717710886] [2020-12-22 12:52:31,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:52:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:52:32,389 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 12:52:32,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717710886] [2020-12-22 12:52:32,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194933850] [2020-12-22 12:52:32,390 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 12:52:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:52:37,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 12893 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 12:52:37,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:52:38,068 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 12:52:38,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:52:38,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2020-12-22 12:52:38,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113024542] [2020-12-22 12:52:38,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 12:52:38,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:52:38,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 12:52:38,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 12:52:38,075 INFO L87 Difference]: Start difference. First operand 14108 states and 19235 transitions. Second operand 8 states. [2020-12-22 12:52:43,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:52:43,682 INFO L93 Difference]: Finished difference Result 41811 states and 57055 transitions. [2020-12-22 12:52:43,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 12:52:43,683 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-12-22 12:52:43,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:52:43,774 INFO L225 Difference]: With dead ends: 41811 [2020-12-22 12:52:43,774 INFO L226 Difference]: Without dead ends: 27666 [2020-12-22 12:52:43,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-12-22 12:52:43,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27666 states. [2020-12-22 12:52:44,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27666 to 14113. [2020-12-22 12:52:44,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14113 states. [2020-12-22 12:52:44,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14113 states to 14113 states and 19216 transitions. [2020-12-22 12:52:44,649 INFO L78 Accepts]: Start accepts. Automaton has 14113 states and 19216 transitions. Word has length 73 [2020-12-22 12:52:44,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:52:44,649 INFO L481 AbstractCegarLoop]: Abstraction has 14113 states and 19216 transitions. [2020-12-22 12:52:44,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 12:52:44,649 INFO L276 IsEmpty]: Start isEmpty. Operand 14113 states and 19216 transitions. [2020-12-22 12:52:44,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 12:52:44,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:52:44,654 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] [2020-12-22 12:52:44,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 12:52:44,866 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:52:44,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:52:44,867 INFO L82 PathProgramCache]: Analyzing trace with hash -860246004, now seen corresponding path program 1 times [2020-12-22 12:52:44,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:52:44,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778473676] [2020-12-22 12:52:44,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:52:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:52:45,635 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 12:52:45,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778473676] [2020-12-22 12:52:45,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:52:45,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 12:52:45,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123506669] [2020-12-22 12:52:45,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 12:52:45,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:52:45,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 12:52:45,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 12:52:45,639 INFO L87 Difference]: Start difference. First operand 14113 states and 19216 transitions. Second operand 4 states. [2020-12-22 12:52:48,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:52:48,565 INFO L93 Difference]: Finished difference Result 67691 states and 92366 transitions. [2020-12-22 12:52:48,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 12:52:48,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-12-22 12:52:48,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:52:48,653 INFO L225 Difference]: With dead ends: 67691 [2020-12-22 12:52:48,654 INFO L226 Difference]: Without dead ends: 53581 [2020-12-22 12:52:48,684 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 12:52:48,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53581 states. [2020-12-22 12:52:49,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53581 to 14129. [2020-12-22 12:52:49,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14129 states. [2020-12-22 12:52:49,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14129 states to 14129 states and 19232 transitions. [2020-12-22 12:52:49,944 INFO L78 Accepts]: Start accepts. Automaton has 14129 states and 19232 transitions. Word has length 85 [2020-12-22 12:52:49,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:52:49,944 INFO L481 AbstractCegarLoop]: Abstraction has 14129 states and 19232 transitions. [2020-12-22 12:52:49,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 12:52:49,945 INFO L276 IsEmpty]: Start isEmpty. Operand 14129 states and 19232 transitions. [2020-12-22 12:52:49,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 12:52:49,950 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:52:49,950 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] [2020-12-22 12:52:49,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 12:52:49,951 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:52:49,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:52:49,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1508724510, now seen corresponding path program 1 times [2020-12-22 12:52:49,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:52:49,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211198149] [2020-12-22 12:52:49,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:52:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:52:50,661 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 12:52:50,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211198149] [2020-12-22 12:52:50,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:52:50,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:52:50,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687024906] [2020-12-22 12:52:50,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:52:50,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:52:50,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:52:50,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:52:50,663 INFO L87 Difference]: Start difference. First operand 14129 states and 19232 transitions. Second operand 3 states. [2020-12-22 12:52:55,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:52:55,093 INFO L93 Difference]: Finished difference Result 41768 states and 56925 transitions. [2020-12-22 12:52:55,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:52:55,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-22 12:52:55,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:52:55,139 INFO L225 Difference]: With dead ends: 41768 [2020-12-22 12:52:55,139 INFO L226 Difference]: Without dead ends: 27642 [2020-12-22 12:52:55,160 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 12:52:55,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27642 states. [2020-12-22 12:52:56,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27642 to 27433. [2020-12-22 12:52:56,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27433 states. [2020-12-22 12:52:56,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27433 states to 27433 states and 37432 transitions. [2020-12-22 12:52:56,693 INFO L78 Accepts]: Start accepts. Automaton has 27433 states and 37432 transitions. Word has length 87 [2020-12-22 12:52:56,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:52:56,693 INFO L481 AbstractCegarLoop]: Abstraction has 27433 states and 37432 transitions. [2020-12-22 12:52:56,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:52:56,693 INFO L276 IsEmpty]: Start isEmpty. Operand 27433 states and 37432 transitions. [2020-12-22 12:52:56,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 12:52:56,701 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:52:56,701 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] [2020-12-22 12:52:56,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 12:52:56,702 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:52:56,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:52:56,703 INFO L82 PathProgramCache]: Analyzing trace with hash 962307733, now seen corresponding path program 1 times [2020-12-22 12:52:56,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:52:56,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74032582] [2020-12-22 12:52:56,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:52:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:52:57,424 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 12:52:57,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74032582] [2020-12-22 12:52:57,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025557008] [2020-12-22 12:52:57,425 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 12:53:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:53:02,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 12994 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 12:53:02,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:53:02,761 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 12:53:02,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:53:02,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2020-12-22 12:53:02,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514037269] [2020-12-22 12:53:02,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 12:53:02,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:53:02,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 12:53:02,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:53:02,763 INFO L87 Difference]: Start difference. First operand 27433 states and 37432 transitions. Second operand 4 states. [2020-12-22 12:53:09,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:53:09,120 INFO L93 Difference]: Finished difference Result 82295 states and 112291 transitions. [2020-12-22 12:53:09,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 12:53:09,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-12-22 12:53:09,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:53:09,237 INFO L225 Difference]: With dead ends: 82295 [2020-12-22 12:53:09,237 INFO L226 Difference]: Without dead ends: 82287 [2020-12-22 12:53:09,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 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 12:53:09,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82287 states. [2020-12-22 12:53:13,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82287 to 81433. [2020-12-22 12:53:13,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81433 states. [2020-12-22 12:53:14,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81433 states to 81433 states and 111320 transitions. [2020-12-22 12:53:14,042 INFO L78 Accepts]: Start accepts. Automaton has 81433 states and 111320 transitions. Word has length 90 [2020-12-22 12:53:14,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:53:14,043 INFO L481 AbstractCegarLoop]: Abstraction has 81433 states and 111320 transitions. [2020-12-22 12:53:14,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 12:53:14,043 INFO L276 IsEmpty]: Start isEmpty. Operand 81433 states and 111320 transitions. [2020-12-22 12:53:14,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 12:53:14,060 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:53:14,060 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:53:14,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 12:53:14,275 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:53:14,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:53:14,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1841486479, now seen corresponding path program 1 times [2020-12-22 12:53:14,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:53:14,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412989227] [2020-12-22 12:53:14,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:53:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:53:15,263 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 12:53:15,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412989227] [2020-12-22 12:53:15,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:53:15,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:53:15,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110937254] [2020-12-22 12:53:15,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:53:15,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:53:15,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:53:15,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:53:15,266 INFO L87 Difference]: Start difference. First operand 81433 states and 111320 transitions. Second operand 3 states. [2020-12-22 12:53:23,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:53:23,672 INFO L93 Difference]: Finished difference Result 182950 states and 250975 transitions. [2020-12-22 12:53:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:53:23,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 12:53:23,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:53:23,852 INFO L225 Difference]: With dead ends: 182950 [2020-12-22 12:53:23,852 INFO L226 Difference]: Without dead ends: 101520 [2020-12-22 12:53:23,935 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 12:53:24,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101520 states. [2020-12-22 12:53:29,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101520 to 101497. [2020-12-22 12:53:29,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101497 states. [2020-12-22 12:53:30,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101497 states to 101497 states and 138628 transitions. [2020-12-22 12:53:30,036 INFO L78 Accepts]: Start accepts. Automaton has 101497 states and 138628 transitions. Word has length 91 [2020-12-22 12:53:30,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:53:30,037 INFO L481 AbstractCegarLoop]: Abstraction has 101497 states and 138628 transitions. [2020-12-22 12:53:30,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:53:30,037 INFO L276 IsEmpty]: Start isEmpty. Operand 101497 states and 138628 transitions. [2020-12-22 12:53:30,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 12:53:30,049 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:53:30,049 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:53:30,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 12:53:30,049 INFO L429 AbstractCegarLoop]: === Iteration 18 === [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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:53:30,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:53:30,050 INFO L82 PathProgramCache]: Analyzing trace with hash 561622801, now seen corresponding path program 1 times [2020-12-22 12:53:30,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:53:30,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846166931] [2020-12-22 12:53:30,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:53:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:53:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 12:53:30,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846166931] [2020-12-22 12:53:30,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:53:30,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 12:53:30,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049060993] [2020-12-22 12:53:30,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 12:53:30,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:53:30,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 12:53:30,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 12:53:30,949 INFO L87 Difference]: Start difference. First operand 101497 states and 138628 transitions. Second operand 4 states. [2020-12-22 12:53:38,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:53:38,955 INFO L93 Difference]: Finished difference Result 149301 states and 203538 transitions. [2020-12-22 12:53:38,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 12:53:38,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-12-22 12:53:38,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:53:39,175 INFO L225 Difference]: With dead ends: 149301 [2020-12-22 12:53:39,176 INFO L226 Difference]: Without dead ends: 139885 [2020-12-22 12:53:39,216 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 12:53:39,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139885 states. [2020-12-22 12:53:45,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139885 to 101497. [2020-12-22 12:53:45,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101497 states. [2020-12-22 12:53:45,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101497 states to 101497 states and 138604 transitions. [2020-12-22 12:53:45,598 INFO L78 Accepts]: Start accepts. Automaton has 101497 states and 138604 transitions. Word has length 91 [2020-12-22 12:53:45,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:53:45,598 INFO L481 AbstractCegarLoop]: Abstraction has 101497 states and 138604 transitions. [2020-12-22 12:53:45,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 12:53:45,598 INFO L276 IsEmpty]: Start isEmpty. Operand 101497 states and 138604 transitions. [2020-12-22 12:53:45,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 12:53:45,816 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:53:45,816 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 12:53:45,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 12:53:45,817 INFO L429 AbstractCegarLoop]: === Iteration 19 === [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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:53:45,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:53:45,818 INFO L82 PathProgramCache]: Analyzing trace with hash -209702106, now seen corresponding path program 1 times [2020-12-22 12:53:45,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:53:45,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788093164] [2020-12-22 12:53:45,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:53:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:53:46,471 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 12:53:46,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788093164] [2020-12-22 12:53:46,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:53:46,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:53:46,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519772529] [2020-12-22 12:53:46,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:53:46,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:53:46,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:53:46,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:53:46,474 INFO L87 Difference]: Start difference. First operand 101497 states and 138604 transitions. Second operand 3 states. [2020-12-22 12:53:56,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:53:56,259 INFO L93 Difference]: Finished difference Result 223078 states and 305543 transitions. [2020-12-22 12:53:56,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:53:56,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-22 12:53:56,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:53:56,612 INFO L225 Difference]: With dead ends: 223078 [2020-12-22 12:53:56,612 INFO L226 Difference]: Without dead ends: 121584 [2020-12-22 12:53:56,700 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 12:53:56,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121584 states. [2020-12-22 12:54:03,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121584 to 121561. [2020-12-22 12:54:03,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121561 states. [2020-12-22 12:54:04,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121561 states to 121561 states and 165912 transitions. [2020-12-22 12:54:04,061 INFO L78 Accepts]: Start accepts. Automaton has 121561 states and 165912 transitions. Word has length 92 [2020-12-22 12:54:04,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:54:04,062 INFO L481 AbstractCegarLoop]: Abstraction has 121561 states and 165912 transitions. [2020-12-22 12:54:04,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:54:04,062 INFO L276 IsEmpty]: Start isEmpty. Operand 121561 states and 165912 transitions. [2020-12-22 12:54:04,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 12:54:04,074 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:54:04,075 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 12:54:04,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 12:54:04,075 INFO L429 AbstractCegarLoop]: === Iteration 20 === [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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:54:04,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:54:04,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1489565784, now seen corresponding path program 1 times [2020-12-22 12:54:04,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:54:04,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404180544] [2020-12-22 12:54:04,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:54:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:54:04,889 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 12:54:04,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404180544] [2020-12-22 12:54:04,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:54:04,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 12:54:04,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710785742] [2020-12-22 12:54:04,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 12:54:04,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:54:04,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 12:54:04,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 12:54:04,892 INFO L87 Difference]: Start difference. First operand 121561 states and 165912 transitions. Second operand 4 states. [2020-12-22 12:54:14,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:54:14,572 INFO L93 Difference]: Finished difference Result 169365 states and 230822 transitions. [2020-12-22 12:54:14,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 12:54:14,573 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-12-22 12:54:14,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:54:14,841 INFO L225 Difference]: With dead ends: 169365 [2020-12-22 12:54:14,842 INFO L226 Difference]: Without dead ends: 159949 [2020-12-22 12:54:14,903 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 12:54:15,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159949 states.