/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:06:00,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:06:00,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:06:00,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:06:00,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:06:00,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:06:00,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:06:00,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:06:00,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:06:00,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:06:00,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:06:00,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:06:00,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:06:00,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:06:00,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:06:00,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:06:00,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:06:00,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:06:00,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:06:00,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:06:00,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:06:00,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:06:00,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:06:00,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:06:00,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:06:00,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:06:00,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:06:00,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:06:00,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:06:00,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:06:00,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:06:00,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:06:00,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:06:00,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:06:00,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:06:00,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:06:00,466 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:06:00,495 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:06:00,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:06:00,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:06:00,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:06:00,497 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:06:00,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:06:00,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:06:00,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:06:00,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:06:00,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:06:00,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:06:00,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:06:00,500 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:06:00,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:06:00,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:06:00,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:06:00,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:06:00,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:06:00,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:06:00,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:06:00,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:06:00,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:06:00,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:06:00,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:06:00,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:06:00,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:06:00,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:06:00,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:06:00,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:06:00,970 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:06:00,971 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:06:00,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-12-22 08:06:01,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ced03cbd3/94105c504dde49b19112f8451beb2ad9/FLAG1dd456ce4 [2020-12-22 08:06:01,825 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:06:01,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-12-22 08:06:01,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ced03cbd3/94105c504dde49b19112f8451beb2ad9/FLAG1dd456ce4 [2020-12-22 08:06:01,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ced03cbd3/94105c504dde49b19112f8451beb2ad9 [2020-12-22 08:06:01,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:06:01,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:06:01,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:06:01,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:06:01,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:06:01,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:06:01" (1/1) ... [2020-12-22 08:06:01,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47180e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:01, skipping insertion in model container [2020-12-22 08:06:01,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:06:01" (1/1) ... [2020-12-22 08:06:01,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:06:01,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:06:02,404 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13760,13773] [2020-12-22 08:06:02,423 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14407,14420] [2020-12-22 08:06:02,452 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15640,15653] [2020-12-22 08:06:02,478 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16700,16713] [2020-12-22 08:06:02,663 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[25091,25104] [2020-12-22 08:06:02,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:06:02,782 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:06:02,997 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13760,13773] [2020-12-22 08:06:03,014 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14407,14420] [2020-12-22 08:06:03,035 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15640,15653] [2020-12-22 08:06:03,055 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16700,16713] [2020-12-22 08:06:03,117 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[25091,25104] [2020-12-22 08:06:03,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:06:03,179 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:06:03,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:03 WrapperNode [2020-12-22 08:06:03,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:06:03,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:06:03,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:06:03,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:06:03,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:03" (1/1) ... [2020-12-22 08:06:03,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:03" (1/1) ... [2020-12-22 08:06:03,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:06:03,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:06:03,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:06:03,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:06:03,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:03" (1/1) ... [2020-12-22 08:06:03,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:03" (1/1) ... [2020-12-22 08:06:03,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:03" (1/1) ... [2020-12-22 08:06:03,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:03" (1/1) ... [2020-12-22 08:06:03,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:03" (1/1) ... [2020-12-22 08:06:03,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:03" (1/1) ... [2020-12-22 08:06:03,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:03" (1/1) ... [2020-12-22 08:06:03,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:06:03,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:06:03,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:06:03,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:06:03,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:06:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:06:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:06:03,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:06:03,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:06:05,307 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:06:05,307 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:06:05,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:06:05 BoogieIcfgContainer [2020-12-22 08:06:05,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:06:05,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:06:05,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:06:05,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:06:05,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:06:01" (1/3) ... [2020-12-22 08:06:05,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63faf3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:06:05, skipping insertion in model container [2020-12-22 08:06:05,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:06:03" (2/3) ... [2020-12-22 08:06:05,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63faf3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:06:05, skipping insertion in model container [2020-12-22 08:06:05,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:06:05" (3/3) ... [2020-12-22 08:06:05,321 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-12-22 08:06:05,327 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:06:05,333 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 08:06:05,352 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 08:06:05,385 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:06:05,385 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:06:05,385 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:06:05,385 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:06:05,386 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:06:05,386 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:06:05,386 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:06:05,386 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:06:05,412 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states. [2020-12-22 08:06:05,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-22 08:06:05,429 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:05,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:06:05,431 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:05,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:05,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1808275345, now seen corresponding path program 1 times [2020-12-22 08:06:05,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:05,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274377198] [2020-12-22 08:06:05,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:06,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:06,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274377198] [2020-12-22 08:06:06,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:06,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:06:06,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490739819] [2020-12-22 08:06:06,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:06:06,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:06,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:06:06,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:06,046 INFO L87 Difference]: Start difference. First operand 377 states. Second operand 3 states. [2020-12-22 08:06:06,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:06,267 INFO L93 Difference]: Finished difference Result 683 states and 1217 transitions. [2020-12-22 08:06:06,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:06:06,269 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-12-22 08:06:06,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:06,290 INFO L225 Difference]: With dead ends: 683 [2020-12-22 08:06:06,290 INFO L226 Difference]: Without dead ends: 546 [2020-12-22 08:06:06,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:06,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-12-22 08:06:06,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 544. [2020-12-22 08:06:06,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-12-22 08:06:06,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 798 transitions. [2020-12-22 08:06:06,399 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 798 transitions. Word has length 139 [2020-12-22 08:06:06,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:06,400 INFO L481 AbstractCegarLoop]: Abstraction has 544 states and 798 transitions. [2020-12-22 08:06:06,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:06:06,401 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 798 transitions. [2020-12-22 08:06:06,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-22 08:06:06,410 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:06,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:06:06,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:06:06,411 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:06,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:06,416 INFO L82 PathProgramCache]: Analyzing trace with hash 715131696, now seen corresponding path program 1 times [2020-12-22 08:06:06,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:06,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739943060] [2020-12-22 08:06:06,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:06,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739943060] [2020-12-22 08:06:06,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:06,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:06:06,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193662826] [2020-12-22 08:06:06,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:06:06,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:06,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:06:06,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:06,666 INFO L87 Difference]: Start difference. First operand 544 states and 798 transitions. Second operand 3 states. [2020-12-22 08:06:06,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:06,834 INFO L93 Difference]: Finished difference Result 1093 states and 1658 transitions. [2020-12-22 08:06:06,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:06:06,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-12-22 08:06:06,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:06,842 INFO L225 Difference]: With dead ends: 1093 [2020-12-22 08:06:06,842 INFO L226 Difference]: Without dead ends: 902 [2020-12-22 08:06:06,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:06,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2020-12-22 08:06:06,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 900. [2020-12-22 08:06:06,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 900 states. [2020-12-22 08:06:06,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1345 transitions. [2020-12-22 08:06:06,896 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1345 transitions. Word has length 139 [2020-12-22 08:06:06,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:06,896 INFO L481 AbstractCegarLoop]: Abstraction has 900 states and 1345 transitions. [2020-12-22 08:06:06,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:06:06,897 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1345 transitions. [2020-12-22 08:06:06,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-22 08:06:06,901 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:06,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:06:06,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:06:06,902 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:06,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:06,903 INFO L82 PathProgramCache]: Analyzing trace with hash 714700720, now seen corresponding path program 1 times [2020-12-22 08:06:06,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:06,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226284698] [2020-12-22 08:06:06,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:07,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:07,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226284698] [2020-12-22 08:06:07,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:07,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:06:07,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230289455] [2020-12-22 08:06:07,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:06:07,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:07,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:06:07,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:06:07,258 INFO L87 Difference]: Start difference. First operand 900 states and 1345 transitions. Second operand 4 states. [2020-12-22 08:06:07,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:07,433 INFO L93 Difference]: Finished difference Result 2634 states and 3926 transitions. [2020-12-22 08:06:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:06:07,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-12-22 08:06:07,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:07,444 INFO L225 Difference]: With dead ends: 2634 [2020-12-22 08:06:07,445 INFO L226 Difference]: Without dead ends: 1743 [2020-12-22 08:06:07,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:06:07,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-12-22 08:06:07,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1703. [2020-12-22 08:06:07,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1703 states. [2020-12-22 08:06:07,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2528 transitions. [2020-12-22 08:06:07,533 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2528 transitions. Word has length 139 [2020-12-22 08:06:07,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:07,534 INFO L481 AbstractCegarLoop]: Abstraction has 1703 states and 2528 transitions. [2020-12-22 08:06:07,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:06:07,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2528 transitions. [2020-12-22 08:06:07,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-22 08:06:07,537 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:07,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:06:07,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:06:07,538 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:07,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:07,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1630009316, now seen corresponding path program 1 times [2020-12-22 08:06:07,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:07,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644471736] [2020-12-22 08:06:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:07,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:07,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644471736] [2020-12-22 08:06:07,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:07,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:06:07,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161641026] [2020-12-22 08:06:07,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:06:07,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:07,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:06:07,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:07,623 INFO L87 Difference]: Start difference. First operand 1703 states and 2528 transitions. Second operand 3 states. [2020-12-22 08:06:07,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:07,788 INFO L93 Difference]: Finished difference Result 5071 states and 7522 transitions. [2020-12-22 08:06:07,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:06:07,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 140 [2020-12-22 08:06:07,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:07,811 INFO L225 Difference]: With dead ends: 5071 [2020-12-22 08:06:07,811 INFO L226 Difference]: Without dead ends: 3396 [2020-12-22 08:06:07,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:07,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3396 states. [2020-12-22 08:06:07,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3396 to 1705. [2020-12-22 08:06:07,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1705 states. [2020-12-22 08:06:07,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2530 transitions. [2020-12-22 08:06:07,944 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2530 transitions. Word has length 140 [2020-12-22 08:06:07,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:07,945 INFO L481 AbstractCegarLoop]: Abstraction has 1705 states and 2530 transitions. [2020-12-22 08:06:07,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:06:07,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2530 transitions. [2020-12-22 08:06:07,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 08:06:07,948 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:07,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:06:07,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:06:07,949 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:07,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:07,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1573794978, now seen corresponding path program 1 times [2020-12-22 08:06:07,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:07,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636503990] [2020-12-22 08:06:07,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:08,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:08,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636503990] [2020-12-22 08:06:08,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:08,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:06:08,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834384824] [2020-12-22 08:06:08,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:06:08,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:08,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:06:08,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:08,110 INFO L87 Difference]: Start difference. First operand 1705 states and 2530 transitions. Second operand 3 states. [2020-12-22 08:06:08,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:08,387 INFO L93 Difference]: Finished difference Result 4483 states and 6649 transitions. [2020-12-22 08:06:08,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:06:08,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 141 [2020-12-22 08:06:08,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:08,404 INFO L225 Difference]: With dead ends: 4483 [2020-12-22 08:06:08,404 INFO L226 Difference]: Without dead ends: 2956 [2020-12-22 08:06:08,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:08,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2020-12-22 08:06:08,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2916. [2020-12-22 08:06:08,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2916 states. [2020-12-22 08:06:08,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4271 transitions. [2020-12-22 08:06:08,611 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4271 transitions. Word has length 141 [2020-12-22 08:06:08,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:08,611 INFO L481 AbstractCegarLoop]: Abstraction has 2916 states and 4271 transitions. [2020-12-22 08:06:08,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:06:08,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4271 transitions. [2020-12-22 08:06:08,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 08:06:08,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:08,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:06:08,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:06:08,618 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:08,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:08,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1469323167, now seen corresponding path program 1 times [2020-12-22 08:06:08,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:08,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969918956] [2020-12-22 08:06:08,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:08,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969918956] [2020-12-22 08:06:08,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:08,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:06:08,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965699958] [2020-12-22 08:06:08,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:06:08,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:08,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:06:08,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:06:08,937 INFO L87 Difference]: Start difference. First operand 2916 states and 4271 transitions. Second operand 5 states. [2020-12-22 08:06:09,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:09,433 INFO L93 Difference]: Finished difference Result 8365 states and 12234 transitions. [2020-12-22 08:06:09,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:06:09,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-12-22 08:06:09,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:09,462 INFO L225 Difference]: With dead ends: 8365 [2020-12-22 08:06:09,463 INFO L226 Difference]: Without dead ends: 5463 [2020-12-22 08:06:09,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:06:09,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5463 states. [2020-12-22 08:06:09,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5463 to 5433. [2020-12-22 08:06:09,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5433 states. [2020-12-22 08:06:09,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5433 states to 5433 states and 7873 transitions. [2020-12-22 08:06:09,879 INFO L78 Accepts]: Start accepts. Automaton has 5433 states and 7873 transitions. Word has length 141 [2020-12-22 08:06:09,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:09,880 INFO L481 AbstractCegarLoop]: Abstraction has 5433 states and 7873 transitions. [2020-12-22 08:06:09,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:06:09,882 INFO L276 IsEmpty]: Start isEmpty. Operand 5433 states and 7873 transitions. [2020-12-22 08:06:09,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 08:06:09,892 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:09,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:06:09,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:06:09,901 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:09,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:09,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1879197263, now seen corresponding path program 1 times [2020-12-22 08:06:09,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:09,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181809695] [2020-12-22 08:06:09,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:10,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181809695] [2020-12-22 08:06:10,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:10,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:06:10,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621495041] [2020-12-22 08:06:10,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:06:10,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:10,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:06:10,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:06:10,127 INFO L87 Difference]: Start difference. First operand 5433 states and 7873 transitions. Second operand 4 states. [2020-12-22 08:06:11,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:11,055 INFO L93 Difference]: Finished difference Result 15890 states and 22966 transitions. [2020-12-22 08:06:11,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:06:11,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2020-12-22 08:06:11,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:11,135 INFO L225 Difference]: With dead ends: 15890 [2020-12-22 08:06:11,135 INFO L226 Difference]: Without dead ends: 10513 [2020-12-22 08:06:11,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:06:11,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10513 states. [2020-12-22 08:06:11,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10513 to 10465. [2020-12-22 08:06:11,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10465 states. [2020-12-22 08:06:11,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10465 states to 10465 states and 14994 transitions. [2020-12-22 08:06:11,930 INFO L78 Accepts]: Start accepts. Automaton has 10465 states and 14994 transitions. Word has length 141 [2020-12-22 08:06:11,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:11,930 INFO L481 AbstractCegarLoop]: Abstraction has 10465 states and 14994 transitions. [2020-12-22 08:06:11,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:06:11,931 INFO L276 IsEmpty]: Start isEmpty. Operand 10465 states and 14994 transitions. [2020-12-22 08:06:11,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 08:06:11,948 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:11,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:06:11,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:06:11,949 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:11,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:11,950 INFO L82 PathProgramCache]: Analyzing trace with hash -139281573, now seen corresponding path program 1 times [2020-12-22 08:06:11,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:11,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146732113] [2020-12-22 08:06:11,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:12,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146732113] [2020-12-22 08:06:12,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:12,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:06:12,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327269629] [2020-12-22 08:06:12,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:06:12,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:12,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:06:12,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:12,023 INFO L87 Difference]: Start difference. First operand 10465 states and 14994 transitions. Second operand 3 states. [2020-12-22 08:06:13,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:13,149 INFO L93 Difference]: Finished difference Result 31243 states and 44749 transitions. [2020-12-22 08:06:13,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:06:13,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-12-22 08:06:13,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:13,231 INFO L225 Difference]: With dead ends: 31243 [2020-12-22 08:06:13,232 INFO L226 Difference]: Without dead ends: 20869 [2020-12-22 08:06:13,249 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 08:06:13,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20869 states. [2020-12-22 08:06:14,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20869 to 10475. [2020-12-22 08:06:14,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10475 states. [2020-12-22 08:06:14,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10475 states to 10475 states and 15004 transitions. [2020-12-22 08:06:14,281 INFO L78 Accepts]: Start accepts. Automaton has 10475 states and 15004 transitions. Word has length 142 [2020-12-22 08:06:14,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:14,282 INFO L481 AbstractCegarLoop]: Abstraction has 10475 states and 15004 transitions. [2020-12-22 08:06:14,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:06:14,282 INFO L276 IsEmpty]: Start isEmpty. Operand 10475 states and 15004 transitions. [2020-12-22 08:06:14,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 08:06:14,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:14,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:06:14,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:06:14,298 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:14,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:14,299 INFO L82 PathProgramCache]: Analyzing trace with hash -577507218, now seen corresponding path program 1 times [2020-12-22 08:06:14,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:14,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105185549] [2020-12-22 08:06:14,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:14,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:14,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105185549] [2020-12-22 08:06:14,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:14,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:06:14,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425049549] [2020-12-22 08:06:14,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:06:14,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:14,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:06:14,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:06:14,517 INFO L87 Difference]: Start difference. First operand 10475 states and 15004 transitions. Second operand 4 states. [2020-12-22 08:06:15,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:15,956 INFO L93 Difference]: Finished difference Result 30543 states and 43659 transitions. [2020-12-22 08:06:15,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:06:15,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-12-22 08:06:15,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:16,001 INFO L225 Difference]: With dead ends: 30543 [2020-12-22 08:06:16,002 INFO L226 Difference]: Without dead ends: 20169 [2020-12-22 08:06:16,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:06:16,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20169 states. [2020-12-22 08:06:17,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20169 to 20121. [2020-12-22 08:06:17,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20121 states. [2020-12-22 08:06:17,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20121 states to 20121 states and 28480 transitions. [2020-12-22 08:06:17,478 INFO L78 Accepts]: Start accepts. Automaton has 20121 states and 28480 transitions. Word has length 143 [2020-12-22 08:06:17,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:17,478 INFO L481 AbstractCegarLoop]: Abstraction has 20121 states and 28480 transitions. [2020-12-22 08:06:17,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:06:17,479 INFO L276 IsEmpty]: Start isEmpty. Operand 20121 states and 28480 transitions. [2020-12-22 08:06:17,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-22 08:06:17,508 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:17,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:06:17,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:06:17,509 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:17,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:17,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1334021606, now seen corresponding path program 1 times [2020-12-22 08:06:17,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:17,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26066118] [2020-12-22 08:06:17,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:17,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:17,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26066118] [2020-12-22 08:06:17,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:17,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:06:17,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926215367] [2020-12-22 08:06:17,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:06:17,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:17,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:06:17,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:17,585 INFO L87 Difference]: Start difference. First operand 20121 states and 28480 transitions. Second operand 3 states. [2020-12-22 08:06:19,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:19,998 INFO L93 Difference]: Finished difference Result 59211 states and 83984 transitions. [2020-12-22 08:06:19,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:06:19,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2020-12-22 08:06:19,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:20,088 INFO L225 Difference]: With dead ends: 59211 [2020-12-22 08:06:20,088 INFO L226 Difference]: Without dead ends: 39965 [2020-12-22 08:06:20,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:20,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39965 states. [2020-12-22 08:06:21,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39965 to 20141. [2020-12-22 08:06:21,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20141 states. [2020-12-22 08:06:21,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20141 states to 20141 states and 28500 transitions. [2020-12-22 08:06:21,483 INFO L78 Accepts]: Start accepts. Automaton has 20141 states and 28500 transitions. Word has length 144 [2020-12-22 08:06:21,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:21,483 INFO L481 AbstractCegarLoop]: Abstraction has 20141 states and 28500 transitions. [2020-12-22 08:06:21,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:06:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 20141 states and 28500 transitions. [2020-12-22 08:06:21,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 08:06:21,507 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:21,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:06:21,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:06:21,508 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:21,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:21,508 INFO L82 PathProgramCache]: Analyzing trace with hash -808241651, now seen corresponding path program 1 times [2020-12-22 08:06:21,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:21,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893633583] [2020-12-22 08:06:21,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:21,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:21,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893633583] [2020-12-22 08:06:21,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:21,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:06:21,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503121119] [2020-12-22 08:06:21,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:06:21,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:21,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:06:21,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:06:21,658 INFO L87 Difference]: Start difference. First operand 20141 states and 28500 transitions. Second operand 4 states. [2020-12-22 08:06:22,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:22,775 INFO L93 Difference]: Finished difference Result 34311 states and 48613 transitions. [2020-12-22 08:06:22,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:06:22,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-12-22 08:06:22,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:22,809 INFO L225 Difference]: With dead ends: 34311 [2020-12-22 08:06:22,809 INFO L226 Difference]: Without dead ends: 14690 [2020-12-22 08:06:22,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:06:22,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14690 states. [2020-12-22 08:06:23,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14690 to 14690. [2020-12-22 08:06:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14690 states. [2020-12-22 08:06:23,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14690 states to 14690 states and 20746 transitions. [2020-12-22 08:06:23,819 INFO L78 Accepts]: Start accepts. Automaton has 14690 states and 20746 transitions. Word has length 145 [2020-12-22 08:06:23,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:23,820 INFO L481 AbstractCegarLoop]: Abstraction has 14690 states and 20746 transitions. [2020-12-22 08:06:23,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:06:23,820 INFO L276 IsEmpty]: Start isEmpty. Operand 14690 states and 20746 transitions. [2020-12-22 08:06:23,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 08:06:23,915 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:23,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:06:23,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:06:23,916 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:23,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:23,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1573789800, now seen corresponding path program 1 times [2020-12-22 08:06:23,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:23,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107018526] [2020-12-22 08:06:23,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:24,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107018526] [2020-12-22 08:06:24,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:24,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:06:24,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868439553] [2020-12-22 08:06:24,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:06:24,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:24,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:06:24,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:24,004 INFO L87 Difference]: Start difference. First operand 14690 states and 20746 transitions. Second operand 3 states. [2020-12-22 08:06:25,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:25,367 INFO L93 Difference]: Finished difference Result 39086 states and 55253 transitions. [2020-12-22 08:06:25,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:06:25,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-12-22 08:06:25,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:25,404 INFO L225 Difference]: With dead ends: 39086 [2020-12-22 08:06:25,404 INFO L226 Difference]: Without dead ends: 25522 [2020-12-22 08:06:25,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:25,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25522 states. [2020-12-22 08:06:27,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25522 to 25496. [2020-12-22 08:06:27,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25496 states. [2020-12-22 08:06:27,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25496 states to 25496 states and 35445 transitions. [2020-12-22 08:06:27,201 INFO L78 Accepts]: Start accepts. Automaton has 25496 states and 35445 transitions. Word has length 153 [2020-12-22 08:06:27,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:27,201 INFO L481 AbstractCegarLoop]: Abstraction has 25496 states and 35445 transitions. [2020-12-22 08:06:27,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:06:27,201 INFO L276 IsEmpty]: Start isEmpty. Operand 25496 states and 35445 transitions. [2020-12-22 08:06:27,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 08:06:27,221 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:27,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:06:27,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:06:27,222 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:27,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:27,222 INFO L82 PathProgramCache]: Analyzing trace with hash 175510955, now seen corresponding path program 1 times [2020-12-22 08:06:27,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:27,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521040801] [2020-12-22 08:06:27,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:27,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:27,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521040801] [2020-12-22 08:06:27,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:27,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:06:27,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592598835] [2020-12-22 08:06:27,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:06:27,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:27,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:06:27,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:27,309 INFO L87 Difference]: Start difference. First operand 25496 states and 35445 transitions. Second operand 3 states. [2020-12-22 08:06:30,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:30,285 INFO L93 Difference]: Finished difference Result 71550 states and 100139 transitions. [2020-12-22 08:06:30,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:06:30,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-12-22 08:06:30,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:30,339 INFO L225 Difference]: With dead ends: 71550 [2020-12-22 08:06:30,339 INFO L226 Difference]: Without dead ends: 49642 [2020-12-22 08:06:30,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:06:30,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49642 states. [2020-12-22 08:06:33,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49642 to 49578. [2020-12-22 08:06:33,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49578 states. [2020-12-22 08:06:33,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49578 states to 49578 states and 68475 transitions. [2020-12-22 08:06:33,356 INFO L78 Accepts]: Start accepts. Automaton has 49578 states and 68475 transitions. Word has length 153 [2020-12-22 08:06:33,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:33,356 INFO L481 AbstractCegarLoop]: Abstraction has 49578 states and 68475 transitions. [2020-12-22 08:06:33,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:06:33,356 INFO L276 IsEmpty]: Start isEmpty. Operand 49578 states and 68475 transitions. [2020-12-22 08:06:33,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 08:06:33,384 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:33,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:06:33,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:06:33,384 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:33,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:33,385 INFO L82 PathProgramCache]: Analyzing trace with hash 2012843792, now seen corresponding path program 1 times [2020-12-22 08:06:33,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:33,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893922494] [2020-12-22 08:06:33,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:34,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:34,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893922494] [2020-12-22 08:06:34,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:34,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-22 08:06:34,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267332988] [2020-12-22 08:06:34,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 08:06:34,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:34,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 08:06:34,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:06:34,080 INFO L87 Difference]: Start difference. First operand 49578 states and 68475 transitions. Second operand 13 states. [2020-12-22 08:06:42,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:42,601 INFO L93 Difference]: Finished difference Result 124166 states and 178474 transitions. [2020-12-22 08:06:42,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:06:42,602 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 153 [2020-12-22 08:06:42,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:42,770 INFO L225 Difference]: With dead ends: 124166 [2020-12-22 08:06:42,770 INFO L226 Difference]: Without dead ends: 107084 [2020-12-22 08:06:42,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2020-12-22 08:06:42,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107084 states. [2020-12-22 08:06:46,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107084 to 55036. [2020-12-22 08:06:46,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55036 states. [2020-12-22 08:06:47,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55036 states to 55036 states and 75001 transitions. [2020-12-22 08:06:47,061 INFO L78 Accepts]: Start accepts. Automaton has 55036 states and 75001 transitions. Word has length 153 [2020-12-22 08:06:47,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:47,062 INFO L481 AbstractCegarLoop]: Abstraction has 55036 states and 75001 transitions. [2020-12-22 08:06:47,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 08:06:47,062 INFO L276 IsEmpty]: Start isEmpty. Operand 55036 states and 75001 transitions. [2020-12-22 08:06:47,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 08:06:47,224 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:47,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:06:47,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:06:47,225 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:47,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:47,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1707208126, now seen corresponding path program 1 times [2020-12-22 08:06:47,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:47,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574761527] [2020-12-22 08:06:47,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:47,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:47,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574761527] [2020-12-22 08:06:47,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:47,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:06:47,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218223708] [2020-12-22 08:06:47,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:06:47,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:47,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:06:47,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:06:47,479 INFO L87 Difference]: Start difference. First operand 55036 states and 75001 transitions. Second operand 4 states. [2020-12-22 08:06:50,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:50,798 INFO L93 Difference]: Finished difference Result 91937 states and 125149 transitions. [2020-12-22 08:06:50,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:06:50,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-12-22 08:06:50,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:50,850 INFO L225 Difference]: With dead ends: 91937 [2020-12-22 08:06:50,850 INFO L226 Difference]: Without dead ends: 48915 [2020-12-22 08:06:50,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:06:51,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48915 states. [2020-12-22 08:06:54,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48915 to 48915. [2020-12-22 08:06:54,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48915 states. [2020-12-22 08:06:54,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48915 states to 48915 states and 66627 transitions. [2020-12-22 08:06:54,542 INFO L78 Accepts]: Start accepts. Automaton has 48915 states and 66627 transitions. Word has length 153 [2020-12-22 08:06:54,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:06:54,543 INFO L481 AbstractCegarLoop]: Abstraction has 48915 states and 66627 transitions. [2020-12-22 08:06:54,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:06:54,543 INFO L276 IsEmpty]: Start isEmpty. Operand 48915 states and 66627 transitions. [2020-12-22 08:06:54,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-22 08:06:54,600 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:06:54,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:06:54,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:06:54,601 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:06:54,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:06:54,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1089422453, now seen corresponding path program 1 times [2020-12-22 08:06:54,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:06:54,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693704243] [2020-12-22 08:06:54,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:06:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:06:54,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:06:54,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693704243] [2020-12-22 08:06:54,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:06:54,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:06:54,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203825000] [2020-12-22 08:06:54,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:06:54,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:06:54,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:06:54,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:06:54,957 INFO L87 Difference]: Start difference. First operand 48915 states and 66627 transitions. Second operand 8 states. [2020-12-22 08:06:58,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:06:58,298 INFO L93 Difference]: Finished difference Result 66339 states and 94094 transitions. [2020-12-22 08:06:58,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:06:58,299 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 159 [2020-12-22 08:06:58,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:06:58,342 INFO L225 Difference]: With dead ends: 66339 [2020-12-22 08:06:58,342 INFO L226 Difference]: Without dead ends: 48917 [2020-12-22 08:06:58,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:06:58,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48917 states. [2020-12-22 08:07:01,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48917 to 48915. [2020-12-22 08:07:01,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48915 states. [2020-12-22 08:07:01,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48915 states to 48915 states and 66306 transitions. [2020-12-22 08:07:01,679 INFO L78 Accepts]: Start accepts. Automaton has 48915 states and 66306 transitions. Word has length 159 [2020-12-22 08:07:01,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:01,681 INFO L481 AbstractCegarLoop]: Abstraction has 48915 states and 66306 transitions. [2020-12-22 08:07:01,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:07:01,681 INFO L276 IsEmpty]: Start isEmpty. Operand 48915 states and 66306 transitions. [2020-12-22 08:07:01,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-22 08:07:01,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:01,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:01,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:07:01,706 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:01,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:01,706 INFO L82 PathProgramCache]: Analyzing trace with hash 60078395, now seen corresponding path program 1 times [2020-12-22 08:07:01,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:01,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859564726] [2020-12-22 08:07:01,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:01,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:01,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859564726] [2020-12-22 08:07:01,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:01,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:07:01,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430297563] [2020-12-22 08:07:01,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:07:01,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:01,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:07:01,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:07:01,953 INFO L87 Difference]: Start difference. First operand 48915 states and 66306 transitions. Second operand 4 states. [2020-12-22 08:07:04,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:04,661 INFO L93 Difference]: Finished difference Result 86465 states and 117048 transitions. [2020-12-22 08:07:04,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:07:04,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-12-22 08:07:04,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:04,700 INFO L225 Difference]: With dead ends: 86465 [2020-12-22 08:07:04,700 INFO L226 Difference]: Without dead ends: 37608 [2020-12-22 08:07:04,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:07:04,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37608 states. [2020-12-22 08:07:07,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37608 to 37608. [2020-12-22 08:07:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37608 states. [2020-12-22 08:07:07,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37608 states to 37608 states and 50815 transitions. [2020-12-22 08:07:07,453 INFO L78 Accepts]: Start accepts. Automaton has 37608 states and 50815 transitions. Word has length 159 [2020-12-22 08:07:07,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:07,454 INFO L481 AbstractCegarLoop]: Abstraction has 37608 states and 50815 transitions. [2020-12-22 08:07:07,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:07:07,454 INFO L276 IsEmpty]: Start isEmpty. Operand 37608 states and 50815 transitions. [2020-12-22 08:07:07,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-22 08:07:07,577 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:07,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:07,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:07:07,578 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:07,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:07,579 INFO L82 PathProgramCache]: Analyzing trace with hash -829166184, now seen corresponding path program 1 times [2020-12-22 08:07:07,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:07,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822282456] [2020-12-22 08:07:07,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:07,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822282456] [2020-12-22 08:07:07,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:07,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:07:07,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098665680] [2020-12-22 08:07:07,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:07:07,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:07,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:07:07,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:07:07,787 INFO L87 Difference]: Start difference. First operand 37608 states and 50815 transitions. Second operand 5 states. [2020-12-22 08:07:10,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:10,222 INFO L93 Difference]: Finished difference Result 70900 states and 95728 transitions. [2020-12-22 08:07:10,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:07:10,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-12-22 08:07:10,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:10,257 INFO L225 Difference]: With dead ends: 70900 [2020-12-22 08:07:10,257 INFO L226 Difference]: Without dead ends: 33657 [2020-12-22 08:07:10,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:07:10,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33657 states. [2020-12-22 08:07:12,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33657 to 33529. [2020-12-22 08:07:12,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33529 states. [2020-12-22 08:07:12,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33529 states to 33529 states and 45190 transitions. [2020-12-22 08:07:12,777 INFO L78 Accepts]: Start accepts. Automaton has 33529 states and 45190 transitions. Word has length 165 [2020-12-22 08:07:12,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:12,778 INFO L481 AbstractCegarLoop]: Abstraction has 33529 states and 45190 transitions. [2020-12-22 08:07:12,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:07:12,778 INFO L276 IsEmpty]: Start isEmpty. Operand 33529 states and 45190 transitions. [2020-12-22 08:07:12,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-22 08:07:12,794 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:12,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:12,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:07:12,795 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:12,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:12,795 INFO L82 PathProgramCache]: Analyzing trace with hash -798666505, now seen corresponding path program 1 times [2020-12-22 08:07:12,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:12,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276014519] [2020-12-22 08:07:12,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:12,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:12,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276014519] [2020-12-22 08:07:12,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:12,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:07:12,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567214480] [2020-12-22 08:07:12,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:07:12,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:12,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:07:12,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:07:12,973 INFO L87 Difference]: Start difference. First operand 33529 states and 45190 transitions. Second operand 4 states. [2020-12-22 08:07:15,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:15,386 INFO L93 Difference]: Finished difference Result 43002 states and 59840 transitions. [2020-12-22 08:07:15,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:07:15,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-12-22 08:07:15,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:15,415 INFO L225 Difference]: With dead ends: 43002 [2020-12-22 08:07:15,415 INFO L226 Difference]: Without dead ends: 30708 [2020-12-22 08:07:15,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:07:15,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30708 states. [2020-12-22 08:07:17,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30708 to 30706. [2020-12-22 08:07:17,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30706 states. [2020-12-22 08:07:17,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30706 states to 30706 states and 40531 transitions. [2020-12-22 08:07:17,631 INFO L78 Accepts]: Start accepts. Automaton has 30706 states and 40531 transitions. Word has length 167 [2020-12-22 08:07:17,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:17,632 INFO L481 AbstractCegarLoop]: Abstraction has 30706 states and 40531 transitions. [2020-12-22 08:07:17,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:07:17,632 INFO L276 IsEmpty]: Start isEmpty. Operand 30706 states and 40531 transitions. [2020-12-22 08:07:17,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-22 08:07:17,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:17,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:17,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:07:17,650 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:17,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:17,650 INFO L82 PathProgramCache]: Analyzing trace with hash -12964090, now seen corresponding path program 1 times [2020-12-22 08:07:17,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:17,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685483200] [2020-12-22 08:07:17,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:17,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:17,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685483200] [2020-12-22 08:07:17,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:17,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:07:17,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584351881] [2020-12-22 08:07:17,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:07:17,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:17,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:07:17,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:07:17,818 INFO L87 Difference]: Start difference. First operand 30706 states and 40531 transitions. Second operand 4 states. [2020-12-22 08:07:20,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:20,286 INFO L93 Difference]: Finished difference Result 61815 states and 81561 transitions. [2020-12-22 08:07:20,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:07:20,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-12-22 08:07:20,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:20,315 INFO L225 Difference]: With dead ends: 61815 [2020-12-22 08:07:20,315 INFO L226 Difference]: Without dead ends: 31498 [2020-12-22 08:07:20,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:07:20,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31498 states. [2020-12-22 08:07:22,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31498 to 31063. [2020-12-22 08:07:22,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31063 states. [2020-12-22 08:07:22,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31063 states to 31063 states and 40936 transitions. [2020-12-22 08:07:22,640 INFO L78 Accepts]: Start accepts. Automaton has 31063 states and 40936 transitions. Word has length 167 [2020-12-22 08:07:22,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:22,640 INFO L481 AbstractCegarLoop]: Abstraction has 31063 states and 40936 transitions. [2020-12-22 08:07:22,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:07:22,641 INFO L276 IsEmpty]: Start isEmpty. Operand 31063 states and 40936 transitions. [2020-12-22 08:07:22,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-22 08:07:22,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:22,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:22,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:07:22,658 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:22,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:22,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1973164691, now seen corresponding path program 1 times [2020-12-22 08:07:22,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:22,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441847779] [2020-12-22 08:07:22,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:22,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441847779] [2020-12-22 08:07:22,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:22,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:07:22,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717438214] [2020-12-22 08:07:22,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:07:22,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:22,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:07:22,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:22,751 INFO L87 Difference]: Start difference. First operand 31063 states and 40936 transitions. Second operand 3 states. [2020-12-22 08:07:27,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:27,050 INFO L93 Difference]: Finished difference Result 79147 states and 105786 transitions. [2020-12-22 08:07:27,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:07:27,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2020-12-22 08:07:27,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:27,106 INFO L225 Difference]: With dead ends: 79147 [2020-12-22 08:07:27,106 INFO L226 Difference]: Without dead ends: 56506 [2020-12-22 08:07:27,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:27,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56506 states. [2020-12-22 08:07:31,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56506 to 56078. [2020-12-22 08:07:31,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56078 states. [2020-12-22 08:07:31,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56078 states to 56078 states and 73919 transitions. [2020-12-22 08:07:31,580 INFO L78 Accepts]: Start accepts. Automaton has 56078 states and 73919 transitions. Word has length 167 [2020-12-22 08:07:31,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:31,581 INFO L481 AbstractCegarLoop]: Abstraction has 56078 states and 73919 transitions. [2020-12-22 08:07:31,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:07:31,581 INFO L276 IsEmpty]: Start isEmpty. Operand 56078 states and 73919 transitions. [2020-12-22 08:07:31,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-22 08:07:31,612 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:31,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:31,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:07:31,613 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:31,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:31,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1204570280, now seen corresponding path program 1 times [2020-12-22 08:07:31,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:31,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300836026] [2020-12-22 08:07:31,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:31,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:31,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300836026] [2020-12-22 08:07:31,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:31,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:07:31,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729685948] [2020-12-22 08:07:31,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:07:31,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:31,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:07:31,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:07:31,843 INFO L87 Difference]: Start difference. First operand 56078 states and 73919 transitions. Second operand 8 states. [2020-12-22 08:07:37,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:37,743 INFO L93 Difference]: Finished difference Result 98788 states and 133511 transitions. [2020-12-22 08:07:37,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:07:37,744 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 167 [2020-12-22 08:07:37,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:37,821 INFO L225 Difference]: With dead ends: 98788 [2020-12-22 08:07:37,821 INFO L226 Difference]: Without dead ends: 78430 [2020-12-22 08:07:37,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:07:37,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78430 states. [2020-12-22 08:07:44,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78430 to 78428. [2020-12-22 08:07:44,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78428 states. [2020-12-22 08:07:44,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78428 states to 78428 states and 102186 transitions. [2020-12-22 08:07:44,137 INFO L78 Accepts]: Start accepts. Automaton has 78428 states and 102186 transitions. Word has length 167 [2020-12-22 08:07:44,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:44,137 INFO L481 AbstractCegarLoop]: Abstraction has 78428 states and 102186 transitions. [2020-12-22 08:07:44,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:07:44,137 INFO L276 IsEmpty]: Start isEmpty. Operand 78428 states and 102186 transitions. [2020-12-22 08:07:44,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-22 08:07:44,189 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:44,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:44,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:07:44,189 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:44,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:44,190 INFO L82 PathProgramCache]: Analyzing trace with hash -326669391, now seen corresponding path program 1 times [2020-12-22 08:07:44,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:44,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40253133] [2020-12-22 08:07:44,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:44,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:44,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40253133] [2020-12-22 08:07:44,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:44,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:07:44,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990354435] [2020-12-22 08:07:44,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:07:44,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:44,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:07:44,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:07:44,490 INFO L87 Difference]: Start difference. First operand 78428 states and 102186 transitions. Second operand 11 states. [2020-12-22 08:07:48,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:48,442 INFO L93 Difference]: Finished difference Result 103451 states and 135605 transitions. [2020-12-22 08:07:48,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:07:48,443 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 167 [2020-12-22 08:07:48,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:48,487 INFO L225 Difference]: With dead ends: 103451 [2020-12-22 08:07:48,487 INFO L226 Difference]: Without dead ends: 43263 [2020-12-22 08:07:48,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:07:48,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43263 states. [2020-12-22 08:07:52,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43263 to 43263. [2020-12-22 08:07:52,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43263 states. [2020-12-22 08:07:52,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43263 states to 43263 states and 55652 transitions. [2020-12-22 08:07:52,088 INFO L78 Accepts]: Start accepts. Automaton has 43263 states and 55652 transitions. Word has length 167 [2020-12-22 08:07:52,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:52,089 INFO L481 AbstractCegarLoop]: Abstraction has 43263 states and 55652 transitions. [2020-12-22 08:07:52,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:07:52,089 INFO L276 IsEmpty]: Start isEmpty. Operand 43263 states and 55652 transitions. [2020-12-22 08:07:52,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-22 08:07:52,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:52,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:52,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 08:07:52,116 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:52,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:52,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1568307259, now seen corresponding path program 1 times [2020-12-22 08:07:52,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:52,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819605863] [2020-12-22 08:07:52,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:52,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:52,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819605863] [2020-12-22 08:07:52,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:52,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:07:52,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055391419] [2020-12-22 08:07:52,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:07:52,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:52,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:07:52,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:07:52,400 INFO L87 Difference]: Start difference. First operand 43263 states and 55652 transitions. Second operand 4 states. [2020-12-22 08:07:55,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:07:55,142 INFO L93 Difference]: Finished difference Result 62215 states and 79937 transitions. [2020-12-22 08:07:55,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:07:55,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2020-12-22 08:07:55,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:07:55,178 INFO L225 Difference]: With dead ends: 62215 [2020-12-22 08:07:55,178 INFO L226 Difference]: Without dead ends: 37335 [2020-12-22 08:07:55,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:07:55,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37335 states. [2020-12-22 08:07:58,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37335 to 37335. [2020-12-22 08:07:58,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37335 states. [2020-12-22 08:07:58,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37335 states to 37335 states and 48027 transitions. [2020-12-22 08:07:58,213 INFO L78 Accepts]: Start accepts. Automaton has 37335 states and 48027 transitions. Word has length 167 [2020-12-22 08:07:58,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:07:58,213 INFO L481 AbstractCegarLoop]: Abstraction has 37335 states and 48027 transitions. [2020-12-22 08:07:58,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:07:58,214 INFO L276 IsEmpty]: Start isEmpty. Operand 37335 states and 48027 transitions. [2020-12-22 08:07:58,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-12-22 08:07:58,236 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:07:58,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:07:58,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 08:07:58,236 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:07:58,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:07:58,237 INFO L82 PathProgramCache]: Analyzing trace with hash 2126052944, now seen corresponding path program 1 times [2020-12-22 08:07:58,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:07:58,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144799215] [2020-12-22 08:07:58,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:07:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:07:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:07:58,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144799215] [2020-12-22 08:07:58,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:07:58,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:07:58,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311981806] [2020-12-22 08:07:58,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:07:58,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:07:58,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:07:58,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:07:58,474 INFO L87 Difference]: Start difference. First operand 37335 states and 48027 transitions. Second operand 3 states. [2020-12-22 08:08:03,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:03,921 INFO L93 Difference]: Finished difference Result 91913 states and 119741 transitions. [2020-12-22 08:08:03,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:08:03,922 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2020-12-22 08:08:03,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:03,993 INFO L225 Difference]: With dead ends: 91913 [2020-12-22 08:08:03,993 INFO L226 Difference]: Without dead ends: 66699 [2020-12-22 08:08:04,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:08:04,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66699 states. [2020-12-22 08:08:09,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66699 to 65816. [2020-12-22 08:08:09,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65816 states. [2020-12-22 08:08:09,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65816 states to 65816 states and 84492 transitions. [2020-12-22 08:08:09,477 INFO L78 Accepts]: Start accepts. Automaton has 65816 states and 84492 transitions. Word has length 169 [2020-12-22 08:08:09,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:08:09,477 INFO L481 AbstractCegarLoop]: Abstraction has 65816 states and 84492 transitions. [2020-12-22 08:08:09,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:08:09,477 INFO L276 IsEmpty]: Start isEmpty. Operand 65816 states and 84492 transitions. [2020-12-22 08:08:09,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-12-22 08:08:09,513 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:08:09,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:08:09,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 08:08:09,513 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:08:09,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:08:09,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1504634869, now seen corresponding path program 1 times [2020-12-22 08:08:09,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:08:09,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774353406] [2020-12-22 08:08:09,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:08:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:08:10,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:08:10,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774353406] [2020-12-22 08:08:10,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:08:10,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-12-22 08:08:10,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942104140] [2020-12-22 08:08:10,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 08:08:10,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:08:10,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 08:08:10,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:08:10,099 INFO L87 Difference]: Start difference. First operand 65816 states and 84492 transitions. Second operand 18 states. [2020-12-22 08:08:11,010 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 14 [2020-12-22 08:08:26,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:08:26,713 INFO L93 Difference]: Finished difference Result 160567 states and 212783 transitions. [2020-12-22 08:08:26,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-22 08:08:26,714 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 169 [2020-12-22 08:08:26,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:08:26,892 INFO L225 Difference]: With dead ends: 160567 [2020-12-22 08:08:26,892 INFO L226 Difference]: Without dead ends: 147946 [2020-12-22 08:08:26,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=623, Invalid=1539, Unknown=0, NotChecked=0, Total=2162 [2020-12-22 08:08:27,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147946 states.