/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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:04:13,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:04:13,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:04:13,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:04:13,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:04:13,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:04:13,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:04:13,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:04:13,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:04:13,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:04:13,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:04:13,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:04:13,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:04:13,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:04:13,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:04:13,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:04:13,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:04:13,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:04:13,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:04:13,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:04:13,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:04:13,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:04:13,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:04:13,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:04:13,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:04:13,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 09:04:13,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 09:04:13,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 09:04:13,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 09:04:13,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 09:04:13,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 09:04:13,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 09:04:13,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 09:04:13,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:04:13,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:04:13,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:04:13,468 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:04:13,523 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:04:13,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:04:13,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:04:13,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:04:13,526 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:04:13,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:04:13,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:04:13,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:04:13,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:04:13,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:04:13,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:04:13,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:04:13,528 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:04:13,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:04:13,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:04:13,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:04:13,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:04:13,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:04:13,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:04:13,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:04:13,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:04:13,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:04:13,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:04:13,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:04:13,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:04:13,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:04:13,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:04:13,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:04:13,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:04:13,963 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:04:13,964 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:04:13,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 09:04:14,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/412e5603c/671867b7442f4ae2bb04c45a98a28c47/FLAGb6a12d5a9 [2020-12-22 09:04:14,898 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:04:14,899 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 09:04:14,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/412e5603c/671867b7442f4ae2bb04c45a98a28c47/FLAGb6a12d5a9 [2020-12-22 09:04:15,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/412e5603c/671867b7442f4ae2bb04c45a98a28c47 [2020-12-22 09:04:15,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:04:15,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:04:15,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:04:15,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:04:15,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:04:15,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:04:15" (1/1) ... [2020-12-22 09:04:15,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e393b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:15, skipping insertion in model container [2020-12-22 09:04:15,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:04:15" (1/1) ... [2020-12-22 09:04:15,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:04:15,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:04:15,664 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14765,14778] [2020-12-22 09:04:15,681 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15412,15425] [2020-12-22 09:04:15,707 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16796,16809] [2020-12-22 09:04:15,726 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17772,17785] [2020-12-22 09:04:15,934 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27137,27150] [2020-12-22 09:04:16,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:04:16,041 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:04:16,145 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14765,14778] [2020-12-22 09:04:16,155 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15412,15425] [2020-12-22 09:04:16,172 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16796,16809] [2020-12-22 09:04:16,185 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17772,17785] [2020-12-22 09:04:16,258 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27137,27150] [2020-12-22 09:04:16,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:04:16,335 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:04:16,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:16 WrapperNode [2020-12-22 09:04:16,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:04:16,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:04:16,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:04:16,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:04:16,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:16" (1/1) ... [2020-12-22 09:04:16,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:16" (1/1) ... [2020-12-22 09:04:16,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:04:16,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:04:16,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:04:16,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:04:16,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:16" (1/1) ... [2020-12-22 09:04:16,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:16" (1/1) ... [2020-12-22 09:04:16,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:16" (1/1) ... [2020-12-22 09:04:16,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:16" (1/1) ... [2020-12-22 09:04:16,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:16" (1/1) ... [2020-12-22 09:04:16,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:16" (1/1) ... [2020-12-22 09:04:16,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:16" (1/1) ... [2020-12-22 09:04:16,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:04:16,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:04:16,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:04:16,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:04:16,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:16" (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 09:04:16,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:04:16,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:04:16,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:04:16,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:04:18,642 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:04:18,643 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:04:18,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:04:18 BoogieIcfgContainer [2020-12-22 09:04:18,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:04:18,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:04:18,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:04:18,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:04:18,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:04:15" (1/3) ... [2020-12-22 09:04:18,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e514f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:04:18, skipping insertion in model container [2020-12-22 09:04:18,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:04:16" (2/3) ... [2020-12-22 09:04:18,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e514f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:04:18, skipping insertion in model container [2020-12-22 09:04:18,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:04:18" (3/3) ... [2020-12-22 09:04:18,656 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 09:04:18,664 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:04:18,670 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 09:04:18,692 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 09:04:18,725 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:04:18,725 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:04:18,725 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:04:18,725 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:04:18,726 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:04:18,726 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:04:18,726 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:04:18,726 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:04:18,753 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states. [2020-12-22 09:04:18,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 09:04:18,771 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:18,772 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] [2020-12-22 09:04:18,773 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 09:04:18,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:18,781 INFO L82 PathProgramCache]: Analyzing trace with hash -430745720, now seen corresponding path program 1 times [2020-12-22 09:04:18,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:18,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895734140] [2020-12-22 09:04:18,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:19,538 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 09:04:19,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895734140] [2020-12-22 09:04:19,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:19,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:19,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543592455] [2020-12-22 09:04:19,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:19,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:19,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:19,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:19,564 INFO L87 Difference]: Start difference. First operand 411 states. Second operand 3 states. [2020-12-22 09:04:19,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:19,812 INFO L93 Difference]: Finished difference Result 753 states and 1326 transitions. [2020-12-22 09:04:19,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:19,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2020-12-22 09:04:19,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:19,836 INFO L225 Difference]: With dead ends: 753 [2020-12-22 09:04:19,836 INFO L226 Difference]: Without dead ends: 596 [2020-12-22 09:04:19,841 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 09:04:19,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-12-22 09:04:19,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 594. [2020-12-22 09:04:19,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-12-22 09:04:19,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 868 transitions. [2020-12-22 09:04:19,942 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 868 transitions. Word has length 147 [2020-12-22 09:04:19,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:19,943 INFO L481 AbstractCegarLoop]: Abstraction has 594 states and 868 transitions. [2020-12-22 09:04:19,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:19,944 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 868 transitions. [2020-12-22 09:04:19,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 09:04:19,952 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:19,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:19,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:04:19,953 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 09:04:19,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:19,954 INFO L82 PathProgramCache]: Analyzing trace with hash -734514301, now seen corresponding path program 1 times [2020-12-22 09:04:19,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:19,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67653765] [2020-12-22 09:04:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:20,233 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 09:04:20,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67653765] [2020-12-22 09:04:20,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:20,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:20,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416875056] [2020-12-22 09:04:20,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:20,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:20,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:20,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:20,241 INFO L87 Difference]: Start difference. First operand 594 states and 868 transitions. Second operand 3 states. [2020-12-22 09:04:20,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:20,504 INFO L93 Difference]: Finished difference Result 1211 states and 1828 transitions. [2020-12-22 09:04:20,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:20,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2020-12-22 09:04:20,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:20,524 INFO L225 Difference]: With dead ends: 1211 [2020-12-22 09:04:20,524 INFO L226 Difference]: Without dead ends: 988 [2020-12-22 09:04:20,530 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 09:04:20,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2020-12-22 09:04:20,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 986. [2020-12-22 09:04:20,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-12-22 09:04:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1465 transitions. [2020-12-22 09:04:20,623 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1465 transitions. Word has length 147 [2020-12-22 09:04:20,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:20,629 INFO L481 AbstractCegarLoop]: Abstraction has 986 states and 1465 transitions. [2020-12-22 09:04:20,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:20,630 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1465 transitions. [2020-12-22 09:04:20,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 09:04:20,640 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:20,640 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] [2020-12-22 09:04:20,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:04:20,644 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 09:04:20,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:20,648 INFO L82 PathProgramCache]: Analyzing trace with hash -734945277, now seen corresponding path program 1 times [2020-12-22 09:04:20,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:20,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576942972] [2020-12-22 09:04:20,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:21,078 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 09:04:21,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576942972] [2020-12-22 09:04:21,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:21,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:04:21,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177758292] [2020-12-22 09:04:21,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:04:21,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:21,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:04:21,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:04:21,087 INFO L87 Difference]: Start difference. First operand 986 states and 1465 transitions. Second operand 4 states. [2020-12-22 09:04:21,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:21,263 INFO L93 Difference]: Finished difference Result 2903 states and 4300 transitions. [2020-12-22 09:04:21,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:21,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-12-22 09:04:21,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:21,281 INFO L225 Difference]: With dead ends: 2903 [2020-12-22 09:04:21,288 INFO L226 Difference]: Without dead ends: 1926 [2020-12-22 09:04:21,292 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 09:04:21,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2020-12-22 09:04:21,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1878. [2020-12-22 09:04:21,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1878 states. [2020-12-22 09:04:21,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2778 transitions. [2020-12-22 09:04:21,394 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2778 transitions. Word has length 147 [2020-12-22 09:04:21,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:21,395 INFO L481 AbstractCegarLoop]: Abstraction has 1878 states and 2778 transitions. [2020-12-22 09:04:21,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:04:21,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2778 transitions. [2020-12-22 09:04:21,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 09:04:21,399 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:21,399 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] [2020-12-22 09:04:21,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:04:21,400 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 09:04:21,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:21,400 INFO L82 PathProgramCache]: Analyzing trace with hash -464497969, now seen corresponding path program 1 times [2020-12-22 09:04:21,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:21,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621143229] [2020-12-22 09:04:21,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:21,490 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 09:04:21,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621143229] [2020-12-22 09:04:21,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:21,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:21,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719541185] [2020-12-22 09:04:21,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:21,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:21,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:21,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:21,499 INFO L87 Difference]: Start difference. First operand 1878 states and 2778 transitions. Second operand 3 states. [2020-12-22 09:04:21,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:21,704 INFO L93 Difference]: Finished difference Result 5596 states and 8272 transitions. [2020-12-22 09:04:21,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:21,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-12-22 09:04:21,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:21,727 INFO L225 Difference]: With dead ends: 5596 [2020-12-22 09:04:21,727 INFO L226 Difference]: Without dead ends: 3746 [2020-12-22 09:04:21,731 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 09:04:21,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3746 states. [2020-12-22 09:04:21,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3746 to 1880. [2020-12-22 09:04:21,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1880 states. [2020-12-22 09:04:21,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 2780 transitions. [2020-12-22 09:04:21,885 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 2780 transitions. Word has length 148 [2020-12-22 09:04:21,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:21,885 INFO L481 AbstractCegarLoop]: Abstraction has 1880 states and 2780 transitions. [2020-12-22 09:04:21,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:21,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 2780 transitions. [2020-12-22 09:04:21,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 09:04:21,889 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:21,889 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] [2020-12-22 09:04:21,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:04:21,890 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 09:04:21,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:21,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1286115900, now seen corresponding path program 1 times [2020-12-22 09:04:21,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:21,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490689877] [2020-12-22 09:04:21,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:22,006 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 09:04:22,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490689877] [2020-12-22 09:04:22,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:22,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:22,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462653138] [2020-12-22 09:04:22,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:22,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:22,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:22,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:22,011 INFO L87 Difference]: Start difference. First operand 1880 states and 2780 transitions. Second operand 3 states. [2020-12-22 09:04:22,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:22,269 INFO L93 Difference]: Finished difference Result 4936 states and 7286 transitions. [2020-12-22 09:04:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:22,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2020-12-22 09:04:22,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:22,287 INFO L225 Difference]: With dead ends: 4936 [2020-12-22 09:04:22,288 INFO L226 Difference]: Without dead ends: 3249 [2020-12-22 09:04:22,291 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 09:04:22,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3249 states. [2020-12-22 09:04:22,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3249 to 3201. [2020-12-22 09:04:22,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3201 states. [2020-12-22 09:04:22,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 4676 transitions. [2020-12-22 09:04:22,486 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 4676 transitions. Word has length 149 [2020-12-22 09:04:22,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:22,486 INFO L481 AbstractCegarLoop]: Abstraction has 3201 states and 4676 transitions. [2020-12-22 09:04:22,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:22,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 4676 transitions. [2020-12-22 09:04:22,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 09:04:22,492 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:22,493 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] [2020-12-22 09:04:22,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:04:22,493 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 09:04:22,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:22,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1559353287, now seen corresponding path program 1 times [2020-12-22 09:04:22,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:22,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127780018] [2020-12-22 09:04:22,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:22,786 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 09:04:22,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127780018] [2020-12-22 09:04:22,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:22,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:04:22,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21561804] [2020-12-22 09:04:22,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:04:22,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:22,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:04:22,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:04:22,791 INFO L87 Difference]: Start difference. First operand 3201 states and 4676 transitions. Second operand 5 states. [2020-12-22 09:04:23,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:23,350 INFO L93 Difference]: Finished difference Result 9247 states and 13479 transitions. [2020-12-22 09:04:23,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:23,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-12-22 09:04:23,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:23,380 INFO L225 Difference]: With dead ends: 9247 [2020-12-22 09:04:23,380 INFO L226 Difference]: Without dead ends: 6060 [2020-12-22 09:04:23,388 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 09:04:23,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6060 states. [2020-12-22 09:04:23,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6060 to 6026. [2020-12-22 09:04:23,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6026 states. [2020-12-22 09:04:23,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 8723 transitions. [2020-12-22 09:04:23,817 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 8723 transitions. Word has length 149 [2020-12-22 09:04:23,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:23,819 INFO L481 AbstractCegarLoop]: Abstraction has 6026 states and 8723 transitions. [2020-12-22 09:04:23,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:04:23,823 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 8723 transitions. [2020-12-22 09:04:23,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 09:04:23,833 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:23,834 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] [2020-12-22 09:04:23,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:04:23,836 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 09:04:23,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:23,837 INFO L82 PathProgramCache]: Analyzing trace with hash 978797474, now seen corresponding path program 1 times [2020-12-22 09:04:23,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:23,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525415736] [2020-12-22 09:04:23,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:24,034 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 09:04:24,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525415736] [2020-12-22 09:04:24,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:24,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:04:24,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761307982] [2020-12-22 09:04:24,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:04:24,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:24,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:04:24,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:04:24,038 INFO L87 Difference]: Start difference. First operand 6026 states and 8723 transitions. Second operand 4 states. [2020-12-22 09:04:24,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:24,774 INFO L93 Difference]: Finished difference Result 17607 states and 25392 transitions. [2020-12-22 09:04:24,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:24,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-12-22 09:04:24,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:24,850 INFO L225 Difference]: With dead ends: 17607 [2020-12-22 09:04:24,851 INFO L226 Difference]: Without dead ends: 11637 [2020-12-22 09:04:24,863 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 09:04:24,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11637 states. [2020-12-22 09:04:25,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11637 to 11577. [2020-12-22 09:04:25,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11577 states. [2020-12-22 09:04:25,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11577 states to 11577 states and 16558 transitions. [2020-12-22 09:04:25,690 INFO L78 Accepts]: Start accepts. Automaton has 11577 states and 16558 transitions. Word has length 149 [2020-12-22 09:04:25,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:25,690 INFO L481 AbstractCegarLoop]: Abstraction has 11577 states and 16558 transitions. [2020-12-22 09:04:25,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:04:25,690 INFO L276 IsEmpty]: Start isEmpty. Operand 11577 states and 16558 transitions. [2020-12-22 09:04:25,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-22 09:04:25,708 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:25,709 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] [2020-12-22 09:04:25,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:04:25,709 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 09:04:25,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:25,710 INFO L82 PathProgramCache]: Analyzing trace with hash -728227058, now seen corresponding path program 1 times [2020-12-22 09:04:25,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:25,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056747969] [2020-12-22 09:04:25,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:25,835 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 09:04:25,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056747969] [2020-12-22 09:04:25,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:25,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:25,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303637738] [2020-12-22 09:04:25,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:25,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:25,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:25,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:25,838 INFO L87 Difference]: Start difference. First operand 11577 states and 16558 transitions. Second operand 3 states. [2020-12-22 09:04:27,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:27,127 INFO L93 Difference]: Finished difference Result 34579 states and 49441 transitions. [2020-12-22 09:04:27,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:27,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2020-12-22 09:04:27,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:27,180 INFO L225 Difference]: With dead ends: 34579 [2020-12-22 09:04:27,180 INFO L226 Difference]: Without dead ends: 23093 [2020-12-22 09:04:27,202 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 09:04:27,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23093 states. [2020-12-22 09:04:28,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23093 to 11587. [2020-12-22 09:04:28,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11587 states. [2020-12-22 09:04:28,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11587 states to 11587 states and 16568 transitions. [2020-12-22 09:04:28,070 INFO L78 Accepts]: Start accepts. Automaton has 11587 states and 16568 transitions. Word has length 150 [2020-12-22 09:04:28,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:28,070 INFO L481 AbstractCegarLoop]: Abstraction has 11587 states and 16568 transitions. [2020-12-22 09:04:28,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:28,071 INFO L276 IsEmpty]: Start isEmpty. Operand 11587 states and 16568 transitions. [2020-12-22 09:04:28,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 09:04:28,087 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:28,087 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] [2020-12-22 09:04:28,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:04:28,087 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 09:04:28,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:28,088 INFO L82 PathProgramCache]: Analyzing trace with hash -478461247, now seen corresponding path program 1 times [2020-12-22 09:04:28,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:28,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297245654] [2020-12-22 09:04:28,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:28,273 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 09:04:28,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297245654] [2020-12-22 09:04:28,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:28,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:04:28,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038474336] [2020-12-22 09:04:28,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:04:28,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:28,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:04:28,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:04:28,276 INFO L87 Difference]: Start difference. First operand 11587 states and 16568 transitions. Second operand 4 states. [2020-12-22 09:04:29,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:29,609 INFO L93 Difference]: Finished difference Result 33751 states and 48099 transitions. [2020-12-22 09:04:29,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:29,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-12-22 09:04:29,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:29,661 INFO L225 Difference]: With dead ends: 33751 [2020-12-22 09:04:29,661 INFO L226 Difference]: Without dead ends: 22265 [2020-12-22 09:04:29,680 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 09:04:29,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22265 states. [2020-12-22 09:04:31,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22265 to 22205. [2020-12-22 09:04:31,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22205 states. [2020-12-22 09:04:31,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22205 states to 22205 states and 31344 transitions. [2020-12-22 09:04:31,249 INFO L78 Accepts]: Start accepts. Automaton has 22205 states and 31344 transitions. Word has length 151 [2020-12-22 09:04:31,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:31,249 INFO L481 AbstractCegarLoop]: Abstraction has 22205 states and 31344 transitions. [2020-12-22 09:04:31,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:04:31,249 INFO L276 IsEmpty]: Start isEmpty. Operand 22205 states and 31344 transitions. [2020-12-22 09:04:31,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 09:04:31,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:31,283 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] [2020-12-22 09:04:31,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:04:31,283 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 09:04:31,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:31,284 INFO L82 PathProgramCache]: Analyzing trace with hash 2137159373, now seen corresponding path program 1 times [2020-12-22 09:04:31,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:31,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380474133] [2020-12-22 09:04:31,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:31,357 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 09:04:31,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380474133] [2020-12-22 09:04:31,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:31,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:31,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804679611] [2020-12-22 09:04:31,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:31,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:31,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:31,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:31,360 INFO L87 Difference]: Start difference. First operand 22205 states and 31344 transitions. Second operand 3 states. [2020-12-22 09:04:32,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:32,979 INFO L93 Difference]: Finished difference Result 65403 states and 92484 transitions. [2020-12-22 09:04:32,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:32,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 152 [2020-12-22 09:04:32,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:33,075 INFO L225 Difference]: With dead ends: 65403 [2020-12-22 09:04:33,076 INFO L226 Difference]: Without dead ends: 44129 [2020-12-22 09:04:33,132 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 09:04:33,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44129 states. [2020-12-22 09:04:34,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44129 to 22225. [2020-12-22 09:04:34,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22225 states. [2020-12-22 09:04:34,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22225 states to 22225 states and 31364 transitions. [2020-12-22 09:04:34,796 INFO L78 Accepts]: Start accepts. Automaton has 22225 states and 31364 transitions. Word has length 152 [2020-12-22 09:04:34,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:34,796 INFO L481 AbstractCegarLoop]: Abstraction has 22225 states and 31364 transitions. [2020-12-22 09:04:34,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:34,797 INFO L276 IsEmpty]: Start isEmpty. Operand 22225 states and 31364 transitions. [2020-12-22 09:04:34,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 09:04:34,831 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:34,831 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 09:04:34,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:04:34,832 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 09:04:34,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:34,833 INFO L82 PathProgramCache]: Analyzing trace with hash -2021361859, now seen corresponding path program 1 times [2020-12-22 09:04:34,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:34,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064417957] [2020-12-22 09:04:34,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:35,172 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 09:04:35,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064417957] [2020-12-22 09:04:35,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:35,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:04:35,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358517931] [2020-12-22 09:04:35,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:04:35,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:35,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:04:35,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:04:35,175 INFO L87 Difference]: Start difference. First operand 22225 states and 31364 transitions. Second operand 5 states. [2020-12-22 09:04:36,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:36,392 INFO L93 Difference]: Finished difference Result 45181 states and 63572 transitions. [2020-12-22 09:04:36,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:36,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-12-22 09:04:36,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:36,431 INFO L225 Difference]: With dead ends: 45181 [2020-12-22 09:04:36,432 INFO L226 Difference]: Without dead ends: 23181 [2020-12-22 09:04:36,458 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 09:04:36,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23181 states. [2020-12-22 09:04:37,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23181 to 22747. [2020-12-22 09:04:37,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22747 states. [2020-12-22 09:04:37,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22747 states to 22747 states and 31955 transitions. [2020-12-22 09:04:37,763 INFO L78 Accepts]: Start accepts. Automaton has 22747 states and 31955 transitions. Word has length 153 [2020-12-22 09:04:37,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:37,764 INFO L481 AbstractCegarLoop]: Abstraction has 22747 states and 31955 transitions. [2020-12-22 09:04:37,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:04:37,764 INFO L276 IsEmpty]: Start isEmpty. Operand 22747 states and 31955 transitions. [2020-12-22 09:04:37,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 09:04:37,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:37,792 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 09:04:37,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:04:37,792 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 09:04:37,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:37,793 INFO L82 PathProgramCache]: Analyzing trace with hash 237133152, now seen corresponding path program 1 times [2020-12-22 09:04:37,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:37,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613504760] [2020-12-22 09:04:37,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:37,938 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 09:04:37,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613504760] [2020-12-22 09:04:37,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:37,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:04:37,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950619544] [2020-12-22 09:04:37,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:04:37,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:37,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:04:37,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:04:37,940 INFO L87 Difference]: Start difference. First operand 22747 states and 31955 transitions. Second operand 4 states. [2020-12-22 09:04:38,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:38,892 INFO L93 Difference]: Finished difference Result 38991 states and 54828 transitions. [2020-12-22 09:04:38,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:38,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-12-22 09:04:38,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:38,918 INFO L225 Difference]: With dead ends: 38991 [2020-12-22 09:04:38,918 INFO L226 Difference]: Without dead ends: 16422 [2020-12-22 09:04:38,931 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 09:04:38,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16422 states. [2020-12-22 09:04:39,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16422 to 16422. [2020-12-22 09:04:39,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16422 states. [2020-12-22 09:04:39,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16422 states to 16422 states and 23076 transitions. [2020-12-22 09:04:39,953 INFO L78 Accepts]: Start accepts. Automaton has 16422 states and 23076 transitions. Word has length 153 [2020-12-22 09:04:39,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:39,953 INFO L481 AbstractCegarLoop]: Abstraction has 16422 states and 23076 transitions. [2020-12-22 09:04:39,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:04:39,953 INFO L276 IsEmpty]: Start isEmpty. Operand 16422 states and 23076 transitions. [2020-12-22 09:04:39,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-22 09:04:39,965 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:39,965 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] [2020-12-22 09:04:39,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:04:39,966 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 09:04:39,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:39,966 INFO L82 PathProgramCache]: Analyzing trace with hash 194231239, now seen corresponding path program 1 times [2020-12-22 09:04:39,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:39,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422308401] [2020-12-22 09:04:39,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:40,030 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 09:04:40,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422308401] [2020-12-22 09:04:40,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:40,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:40,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998006739] [2020-12-22 09:04:40,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:40,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:40,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:40,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:40,033 INFO L87 Difference]: Start difference. First operand 16422 states and 23076 transitions. Second operand 3 states. [2020-12-22 09:04:41,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:41,188 INFO L93 Difference]: Finished difference Result 37692 states and 54421 transitions. [2020-12-22 09:04:41,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:41,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2020-12-22 09:04:41,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:41,214 INFO L225 Difference]: With dead ends: 37692 [2020-12-22 09:04:41,214 INFO L226 Difference]: Without dead ends: 22216 [2020-12-22 09:04:41,228 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 09:04:41,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22216 states. [2020-12-22 09:04:42,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22216 to 21734. [2020-12-22 09:04:42,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21734 states. [2020-12-22 09:04:42,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21734 states to 21734 states and 31544 transitions. [2020-12-22 09:04:42,593 INFO L78 Accepts]: Start accepts. Automaton has 21734 states and 31544 transitions. Word has length 156 [2020-12-22 09:04:42,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:42,594 INFO L481 AbstractCegarLoop]: Abstraction has 21734 states and 31544 transitions. [2020-12-22 09:04:42,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:42,594 INFO L276 IsEmpty]: Start isEmpty. Operand 21734 states and 31544 transitions. [2020-12-22 09:04:42,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-22 09:04:42,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:42,603 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 09:04:42,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:04:42,604 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 09:04:42,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:42,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1124301261, now seen corresponding path program 1 times [2020-12-22 09:04:42,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:42,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110754530] [2020-12-22 09:04:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:42,696 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 09:04:42,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110754530] [2020-12-22 09:04:42,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:42,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:42,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594805809] [2020-12-22 09:04:42,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:42,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:42,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:42,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:42,699 INFO L87 Difference]: Start difference. First operand 21734 states and 31544 transitions. Second operand 3 states. [2020-12-22 09:04:44,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:44,760 INFO L93 Difference]: Finished difference Result 58050 states and 84308 transitions. [2020-12-22 09:04:44,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:04:44,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-12-22 09:04:44,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:44,806 INFO L225 Difference]: With dead ends: 58050 [2020-12-22 09:04:44,806 INFO L226 Difference]: Without dead ends: 37794 [2020-12-22 09:04:44,823 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 09:04:44,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37794 states. [2020-12-22 09:04:47,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37794 to 37764. [2020-12-22 09:04:47,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37764 states. [2020-12-22 09:04:47,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37764 states to 37764 states and 53928 transitions. [2020-12-22 09:04:47,139 INFO L78 Accepts]: Start accepts. Automaton has 37764 states and 53928 transitions. Word has length 159 [2020-12-22 09:04:47,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:47,139 INFO L481 AbstractCegarLoop]: Abstraction has 37764 states and 53928 transitions. [2020-12-22 09:04:47,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:04:47,139 INFO L276 IsEmpty]: Start isEmpty. Operand 37764 states and 53928 transitions. [2020-12-22 09:04:47,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-22 09:04:47,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:47,154 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 09:04:47,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:04:47,154 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 09:04:47,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:47,155 INFO L82 PathProgramCache]: Analyzing trace with hash -983486256, now seen corresponding path program 1 times [2020-12-22 09:04:47,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:47,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488354801] [2020-12-22 09:04:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:47,268 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 09:04:47,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488354801] [2020-12-22 09:04:47,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:47,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:04:47,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366103587] [2020-12-22 09:04:47,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:04:47,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:47,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:04:47,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:04:47,271 INFO L87 Difference]: Start difference. First operand 37764 states and 53928 transitions. Second operand 5 states. [2020-12-22 09:04:50,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:50,216 INFO L93 Difference]: Finished difference Result 74104 states and 106291 transitions. [2020-12-22 09:04:50,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:04:50,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-12-22 09:04:50,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:50,260 INFO L225 Difference]: With dead ends: 74104 [2020-12-22 09:04:50,260 INFO L226 Difference]: Without dead ends: 37764 [2020-12-22 09:04:50,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:04:50,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37764 states. [2020-12-22 09:04:52,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37764 to 37764. [2020-12-22 09:04:52,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37764 states. [2020-12-22 09:04:52,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37764 states to 37764 states and 53672 transitions. [2020-12-22 09:04:52,732 INFO L78 Accepts]: Start accepts. Automaton has 37764 states and 53672 transitions. Word has length 159 [2020-12-22 09:04:52,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:52,732 INFO L481 AbstractCegarLoop]: Abstraction has 37764 states and 53672 transitions. [2020-12-22 09:04:52,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:04:52,732 INFO L276 IsEmpty]: Start isEmpty. Operand 37764 states and 53672 transitions. [2020-12-22 09:04:52,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-22 09:04:52,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:52,753 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 09:04:52,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:04:52,754 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 09:04:52,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:52,754 INFO L82 PathProgramCache]: Analyzing trace with hash -378867883, now seen corresponding path program 1 times [2020-12-22 09:04:52,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:52,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105496291] [2020-12-22 09:04:52,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:52,986 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 09:04:52,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105496291] [2020-12-22 09:04:52,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:52,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:04:52,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946332245] [2020-12-22 09:04:52,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:04:52,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:52,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:04:52,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:04:52,992 INFO L87 Difference]: Start difference. First operand 37764 states and 53672 transitions. Second operand 4 states. [2020-12-22 09:04:55,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:04:55,142 INFO L93 Difference]: Finished difference Result 62159 states and 88561 transitions. [2020-12-22 09:04:55,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:04:55,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-12-22 09:04:55,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:04:55,176 INFO L225 Difference]: With dead ends: 62159 [2020-12-22 09:04:55,176 INFO L226 Difference]: Without dead ends: 33555 [2020-12-22 09:04:55,189 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 09:04:55,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33555 states. [2020-12-22 09:04:57,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33555 to 33555. [2020-12-22 09:04:57,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33555 states. [2020-12-22 09:04:57,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33555 states to 33555 states and 47730 transitions. [2020-12-22 09:04:57,328 INFO L78 Accepts]: Start accepts. Automaton has 33555 states and 47730 transitions. Word has length 159 [2020-12-22 09:04:57,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:04:57,332 INFO L481 AbstractCegarLoop]: Abstraction has 33555 states and 47730 transitions. [2020-12-22 09:04:57,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:04:57,332 INFO L276 IsEmpty]: Start isEmpty. Operand 33555 states and 47730 transitions. [2020-12-22 09:04:57,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-22 09:04:57,353 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:04:57,353 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] [2020-12-22 09:04:57,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 09:04:57,353 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 09:04:57,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:04:57,354 INFO L82 PathProgramCache]: Analyzing trace with hash 2137792983, now seen corresponding path program 1 times [2020-12-22 09:04:57,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:04:57,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115476083] [2020-12-22 09:04:57,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:04:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:04:57,455 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 09:04:57,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115476083] [2020-12-22 09:04:57,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:04:57,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:04:57,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654985] [2020-12-22 09:04:57,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:04:57,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:04:57,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:04:57,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:04:57,458 INFO L87 Difference]: Start difference. First operand 33555 states and 47730 transitions. Second operand 3 states. [2020-12-22 09:05:00,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:00,518 INFO L93 Difference]: Finished difference Result 78080 states and 112626 transitions. [2020-12-22 09:05:00,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:00,519 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2020-12-22 09:05:00,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:00,716 INFO L225 Difference]: With dead ends: 78080 [2020-12-22 09:05:00,717 INFO L226 Difference]: Without dead ends: 51819 [2020-12-22 09:05:00,749 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 09:05:00,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51819 states. [2020-12-22 09:05:04,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51819 to 45799. [2020-12-22 09:05:04,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45799 states. [2020-12-22 09:05:04,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45799 states to 45799 states and 66794 transitions. [2020-12-22 09:05:04,085 INFO L78 Accepts]: Start accepts. Automaton has 45799 states and 66794 transitions. Word has length 163 [2020-12-22 09:05:04,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:04,086 INFO L481 AbstractCegarLoop]: Abstraction has 45799 states and 66794 transitions. [2020-12-22 09:05:04,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:04,086 INFO L276 IsEmpty]: Start isEmpty. Operand 45799 states and 66794 transitions. [2020-12-22 09:05:04,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-22 09:05:04,099 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:04,099 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] [2020-12-22 09:05:04,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 09:05:04,099 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 09:05:04,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:04,100 INFO L82 PathProgramCache]: Analyzing trace with hash -480202970, now seen corresponding path program 1 times [2020-12-22 09:05:04,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:04,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127147878] [2020-12-22 09:05:04,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:04,173 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 09:05:04,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127147878] [2020-12-22 09:05:04,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:04,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:05:04,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563399088] [2020-12-22 09:05:04,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:05:04,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:04,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:05:04,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:05:04,175 INFO L87 Difference]: Start difference. First operand 45799 states and 66794 transitions. Second operand 3 states. [2020-12-22 09:05:09,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:09,037 INFO L93 Difference]: Finished difference Result 109163 states and 161162 transitions. [2020-12-22 09:05:09,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:05:09,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2020-12-22 09:05:09,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:09,140 INFO L225 Difference]: With dead ends: 109163 [2020-12-22 09:05:09,140 INFO L226 Difference]: Without dead ends: 72523 [2020-12-22 09:05:09,310 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 09:05:09,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72523 states. [2020-12-22 09:05:14,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72523 to 65547. [2020-12-22 09:05:14,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65547 states. [2020-12-22 09:05:14,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65547 states to 65547 states and 97520 transitions. [2020-12-22 09:05:14,290 INFO L78 Accepts]: Start accepts. Automaton has 65547 states and 97520 transitions. Word has length 163 [2020-12-22 09:05:14,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:14,291 INFO L481 AbstractCegarLoop]: Abstraction has 65547 states and 97520 transitions. [2020-12-22 09:05:14,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:05:14,291 INFO L276 IsEmpty]: Start isEmpty. Operand 65547 states and 97520 transitions. [2020-12-22 09:05:14,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-22 09:05:14,306 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:14,306 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] [2020-12-22 09:05:14,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 09:05:14,307 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 09:05:14,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:14,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1640447980, now seen corresponding path program 1 times [2020-12-22 09:05:14,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:14,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351450976] [2020-12-22 09:05:14,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:14,564 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 09:05:14,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351450976] [2020-12-22 09:05:14,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:14,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 09:05:14,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021536440] [2020-12-22 09:05:14,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 09:05:14,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:14,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 09:05:14,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:05:14,567 INFO L87 Difference]: Start difference. First operand 65547 states and 97520 transitions. Second operand 9 states. [2020-12-22 09:05:31,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:31,523 INFO L93 Difference]: Finished difference Result 254964 states and 382253 transitions. [2020-12-22 09:05:31,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 09:05:31,523 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-12-22 09:05:31,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:32,064 INFO L225 Difference]: With dead ends: 254964 [2020-12-22 09:05:32,064 INFO L226 Difference]: Without dead ends: 194831 [2020-12-22 09:05:32,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=197, Unknown=0, NotChecked=0, Total=306 [2020-12-22 09:05:32,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194831 states. [2020-12-22 09:05:41,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194831 to 104679. [2020-12-22 09:05:41,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104679 states. [2020-12-22 09:05:42,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104679 states to 104679 states and 154796 transitions. [2020-12-22 09:05:42,113 INFO L78 Accepts]: Start accepts. Automaton has 104679 states and 154796 transitions. Word has length 163 [2020-12-22 09:05:42,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:42,114 INFO L481 AbstractCegarLoop]: Abstraction has 104679 states and 154796 transitions. [2020-12-22 09:05:42,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 09:05:42,114 INFO L276 IsEmpty]: Start isEmpty. Operand 104679 states and 154796 transitions. [2020-12-22 09:05:42,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-22 09:05:42,127 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:42,127 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] [2020-12-22 09:05:42,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 09:05:42,128 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 09:05:42,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:42,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1138377499, now seen corresponding path program 1 times [2020-12-22 09:05:42,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:42,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328415051] [2020-12-22 09:05:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:42,283 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 09:05:42,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328415051] [2020-12-22 09:05:42,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:42,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:05:42,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662891976] [2020-12-22 09:05:42,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:05:42,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:42,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:05:42,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:05:42,286 INFO L87 Difference]: Start difference. First operand 104679 states and 154796 transitions. Second operand 4 states. [2020-12-22 09:05:49,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:05:49,867 INFO L93 Difference]: Finished difference Result 188733 states and 278786 transitions. [2020-12-22 09:05:49,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:05:49,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-12-22 09:05:49,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:05:49,994 INFO L225 Difference]: With dead ends: 188733 [2020-12-22 09:05:49,994 INFO L226 Difference]: Without dead ends: 84112 [2020-12-22 09:05:50,228 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 09:05:50,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84112 states. [2020-12-22 09:05:57,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84112 to 84112. [2020-12-22 09:05:57,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84112 states. [2020-12-22 09:05:57,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84112 states to 84112 states and 124063 transitions. [2020-12-22 09:05:57,708 INFO L78 Accepts]: Start accepts. Automaton has 84112 states and 124063 transitions. Word has length 163 [2020-12-22 09:05:57,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:05:57,709 INFO L481 AbstractCegarLoop]: Abstraction has 84112 states and 124063 transitions. [2020-12-22 09:05:57,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:05:57,709 INFO L276 IsEmpty]: Start isEmpty. Operand 84112 states and 124063 transitions. [2020-12-22 09:05:57,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-12-22 09:05:57,718 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:05:57,718 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] [2020-12-22 09:05:57,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 09:05:57,718 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 09:05:57,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:05:57,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1815398331, now seen corresponding path program 1 times [2020-12-22 09:05:57,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:05:57,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68959493] [2020-12-22 09:05:57,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:05:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:05:57,934 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 09:05:57,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68959493] [2020-12-22 09:05:57,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:05:57,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 09:05:57,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843075105] [2020-12-22 09:05:57,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 09:05:57,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:05:57,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 09:05:57,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:05:57,937 INFO L87 Difference]: Start difference. First operand 84112 states and 124063 transitions. Second operand 9 states. [2020-12-22 09:05:58,853 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-12-22 09:06:31,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:06:31,561 INFO L93 Difference]: Finished difference Result 399604 states and 589486 transitions. [2020-12-22 09:06:31,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 09:06:31,561 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2020-12-22 09:06:31,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:06:32,277 INFO L225 Difference]: With dead ends: 399604 [2020-12-22 09:06:32,277 INFO L226 Difference]: Without dead ends: 346004 [2020-12-22 09:06:32,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2020-12-22 09:06:32,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346004 states.