/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_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:36:13,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:36:13,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:36:14,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:36:14,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:36:14,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:36:14,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:36:14,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:36:14,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:36:14,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:36:14,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:36:14,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:36:14,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:36:14,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:36:14,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:36:14,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:36:14,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:36:14,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:36:14,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:36:14,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:36:14,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:36:14,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:36:14,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:36:14,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:36:14,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 08:36:14,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 08:36:14,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 08:36:14,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 08:36:14,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 08:36:14,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 08:36:14,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:36:14,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:36:14,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:36:14,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:36:14,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:36:14,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:36:14,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:36:14,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:36:14,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:36:14,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:36:14,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:36:14,157 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:36:14,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:36:14,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:36:14,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:36:14,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:36:14,222 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:36:14,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:36:14,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:36:14,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:36:14,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:36:14,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:36:14,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:36:14,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:36:14,226 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:36:14,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:36:14,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:36:14,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:36:14,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:36:14,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:36:14,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:36:14,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:36:14,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:36:14,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:36:14,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:36:14,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:36:14,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:36:14,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:36:14,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:36:14,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:36:14,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:36:14,684 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:36:14,685 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:36:14,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:36:14,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98b052872/4f69180ecbff480cbca195ce4774b0a0/FLAG10e0f07a1 [2020-12-22 08:36:15,546 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:36:15,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:36:15,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98b052872/4f69180ecbff480cbca195ce4774b0a0/FLAG10e0f07a1 [2020-12-22 08:36:15,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98b052872/4f69180ecbff480cbca195ce4774b0a0 [2020-12-22 08:36:15,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:36:15,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:36:15,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:36:15,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:36:15,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:36:15,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:36:15" (1/1) ... [2020-12-22 08:36:15,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@338efa7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:36:15, skipping insertion in model container [2020-12-22 08:36:15,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:36:15" (1/1) ... [2020-12-22 08:36:15,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:36:15,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:36:16,153 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_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[6715,6728] [2020-12-22 08:36:16,174 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_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[9402,9415] [2020-12-22 08:36:16,182 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_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[10493,10506] [2020-12-22 08:36:16,187 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_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11099,11112] [2020-12-22 08:36:16,197 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_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12518,12531] [2020-12-22 08:36:16,202 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_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13124,13137] [2020-12-22 08:36:16,209 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_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14053,14066] [2020-12-22 08:36:16,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:36:16,305 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:36:16,365 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_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[6715,6728] [2020-12-22 08:36:16,402 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_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[9402,9415] [2020-12-22 08:36:16,421 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_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[10493,10506] [2020-12-22 08:36:16,437 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_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11099,11112] [2020-12-22 08:36:16,469 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_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12518,12531] [2020-12-22 08:36:16,485 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_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13124,13137] [2020-12-22 08:36:16,502 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_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14053,14066] [2020-12-22 08:36:16,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:36:16,661 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:36:16,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:36:16 WrapperNode [2020-12-22 08:36:16,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:36:16,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:36:16,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:36:16,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:36:16,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:36:16" (1/1) ... [2020-12-22 08:36:16,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:36:16" (1/1) ... [2020-12-22 08:36:16,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:36:16,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:36:16,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:36:16,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:36:16,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:36:16" (1/1) ... [2020-12-22 08:36:16,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:36:16" (1/1) ... [2020-12-22 08:36:16,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:36:16" (1/1) ... [2020-12-22 08:36:16,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:36:16" (1/1) ... [2020-12-22 08:36:16,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:36:16" (1/1) ... [2020-12-22 08:36:16,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:36:16" (1/1) ... [2020-12-22 08:36:16,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:36:16" (1/1) ... [2020-12-22 08:36:16,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:36:16,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:36:16,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:36:16,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:36:16,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:36:16" (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 08:36:17,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:36:17,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:36:17,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:36:17,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:36:18,326 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:36:18,327 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:36:18,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:36:18 BoogieIcfgContainer [2020-12-22 08:36:18,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:36:18,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:36:18,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:36:18,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:36:18,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:36:15" (1/3) ... [2020-12-22 08:36:18,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbed81b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:36:18, skipping insertion in model container [2020-12-22 08:36:18,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:36:16" (2/3) ... [2020-12-22 08:36:18,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fbed81b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:36:18, skipping insertion in model container [2020-12-22 08:36:18,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:36:18" (3/3) ... [2020-12-22 08:36:18,342 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:36:18,350 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:36:18,356 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 08:36:18,374 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 08:36:18,405 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:36:18,405 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:36:18,405 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:36:18,405 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:36:18,405 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:36:18,406 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:36:18,406 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:36:18,406 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:36:18,430 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-12-22 08:36:18,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 08:36:18,441 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:18,442 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] [2020-12-22 08:36:18,442 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:18,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:18,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1899747950, now seen corresponding path program 1 times [2020-12-22 08:36:18,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:18,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327336111] [2020-12-22 08:36:18,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:18,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:18,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327336111] [2020-12-22 08:36:18,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:18,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:36:18,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207292702] [2020-12-22 08:36:18,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:36:18,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:19,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:36:19,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:36:19,009 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 5 states. [2020-12-22 08:36:19,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:19,486 INFO L93 Difference]: Finished difference Result 422 states and 704 transitions. [2020-12-22 08:36:19,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:36:19,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-12-22 08:36:19,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:19,503 INFO L225 Difference]: With dead ends: 422 [2020-12-22 08:36:19,504 INFO L226 Difference]: Without dead ends: 258 [2020-12-22 08:36:19,508 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 08:36:19,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-12-22 08:36:19,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 234. [2020-12-22 08:36:19,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-12-22 08:36:19,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 307 transitions. [2020-12-22 08:36:19,608 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 307 transitions. Word has length 46 [2020-12-22 08:36:19,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:19,611 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 307 transitions. [2020-12-22 08:36:19,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:36:19,611 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 307 transitions. [2020-12-22 08:36:19,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 08:36:19,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:19,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:36:19,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:36:19,617 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:19,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:19,619 INFO L82 PathProgramCache]: Analyzing trace with hash -121525429, now seen corresponding path program 1 times [2020-12-22 08:36:19,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:19,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550737163] [2020-12-22 08:36:19,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:19,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550737163] [2020-12-22 08:36:19,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:19,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:36:19,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251697787] [2020-12-22 08:36:19,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:36:19,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:19,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:36:19,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:36:19,878 INFO L87 Difference]: Start difference. First operand 234 states and 307 transitions. Second operand 5 states. [2020-12-22 08:36:20,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:20,104 INFO L93 Difference]: Finished difference Result 417 states and 560 transitions. [2020-12-22 08:36:20,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:36:20,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-12-22 08:36:20,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:20,108 INFO L225 Difference]: With dead ends: 417 [2020-12-22 08:36:20,108 INFO L226 Difference]: Without dead ends: 224 [2020-12-22 08:36:20,111 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 08:36:20,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-12-22 08:36:20,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2020-12-22 08:36:20,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-12-22 08:36:20,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 293 transitions. [2020-12-22 08:36:20,139 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 293 transitions. Word has length 47 [2020-12-22 08:36:20,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:20,142 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 293 transitions. [2020-12-22 08:36:20,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:36:20,142 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 293 transitions. [2020-12-22 08:36:20,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 08:36:20,144 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:20,145 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] [2020-12-22 08:36:20,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:36:20,145 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:20,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:20,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1668920151, now seen corresponding path program 1 times [2020-12-22 08:36:20,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:20,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804657915] [2020-12-22 08:36:20,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:20,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804657915] [2020-12-22 08:36:20,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:20,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:36:20,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124736163] [2020-12-22 08:36:20,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:36:20,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:20,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:36:20,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:36:20,321 INFO L87 Difference]: Start difference. First operand 224 states and 293 transitions. Second operand 5 states. [2020-12-22 08:36:20,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:20,490 INFO L93 Difference]: Finished difference Result 407 states and 544 transitions. [2020-12-22 08:36:20,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:36:20,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-12-22 08:36:20,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:20,493 INFO L225 Difference]: With dead ends: 407 [2020-12-22 08:36:20,493 INFO L226 Difference]: Without dead ends: 216 [2020-12-22 08:36:20,495 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 08:36:20,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-12-22 08:36:20,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-12-22 08:36:20,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-12-22 08:36:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 282 transitions. [2020-12-22 08:36:20,516 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 282 transitions. Word has length 48 [2020-12-22 08:36:20,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:20,516 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 282 transitions. [2020-12-22 08:36:20,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:36:20,517 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 282 transitions. [2020-12-22 08:36:20,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 08:36:20,518 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:20,519 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] [2020-12-22 08:36:20,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:36:20,519 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:20,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:20,520 INFO L82 PathProgramCache]: Analyzing trace with hash -453133940, now seen corresponding path program 1 times [2020-12-22 08:36:20,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:20,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634276256] [2020-12-22 08:36:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:20,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:20,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634276256] [2020-12-22 08:36:20,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:20,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:36:20,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716365124] [2020-12-22 08:36:20,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:36:20,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:20,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:36:20,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:36:20,778 INFO L87 Difference]: Start difference. First operand 216 states and 282 transitions. Second operand 9 states. [2020-12-22 08:36:21,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:21,530 INFO L93 Difference]: Finished difference Result 531 states and 735 transitions. [2020-12-22 08:36:21,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 08:36:21,531 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-12-22 08:36:21,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:21,534 INFO L225 Difference]: With dead ends: 531 [2020-12-22 08:36:21,535 INFO L226 Difference]: Without dead ends: 526 [2020-12-22 08:36:21,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:36:21,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-12-22 08:36:21,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 216. [2020-12-22 08:36:21,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-12-22 08:36:21,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 281 transitions. [2020-12-22 08:36:21,571 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 281 transitions. Word has length 49 [2020-12-22 08:36:21,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:21,571 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 281 transitions. [2020-12-22 08:36:21,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:36:21,572 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 281 transitions. [2020-12-22 08:36:21,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 08:36:21,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:21,573 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] [2020-12-22 08:36:21,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:36:21,574 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:21,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:21,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1459063162, now seen corresponding path program 1 times [2020-12-22 08:36:21,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:21,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398485986] [2020-12-22 08:36:21,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:21,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:21,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398485986] [2020-12-22 08:36:21,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:21,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:36:21,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243621652] [2020-12-22 08:36:21,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:36:21,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:21,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:36:21,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:36:21,748 INFO L87 Difference]: Start difference. First operand 216 states and 281 transitions. Second operand 9 states. [2020-12-22 08:36:22,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:22,585 INFO L93 Difference]: Finished difference Result 623 states and 870 transitions. [2020-12-22 08:36:22,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:36:22,585 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-12-22 08:36:22,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:22,589 INFO L225 Difference]: With dead ends: 623 [2020-12-22 08:36:22,589 INFO L226 Difference]: Without dead ends: 522 [2020-12-22 08:36:22,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:36:22,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-12-22 08:36:22,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 216. [2020-12-22 08:36:22,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-12-22 08:36:22,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 280 transitions. [2020-12-22 08:36:22,616 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 280 transitions. Word has length 49 [2020-12-22 08:36:22,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:22,617 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 280 transitions. [2020-12-22 08:36:22,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:36:22,617 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 280 transitions. [2020-12-22 08:36:22,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 08:36:22,618 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:22,618 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] [2020-12-22 08:36:22,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:36:22,619 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:22,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:22,620 INFO L82 PathProgramCache]: Analyzing trace with hash 8857914, now seen corresponding path program 1 times [2020-12-22 08:36:22,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:22,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593877471] [2020-12-22 08:36:22,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:22,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593877471] [2020-12-22 08:36:22,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:22,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:36:22,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567994350] [2020-12-22 08:36:22,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:36:22,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:22,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:36:22,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:36:22,826 INFO L87 Difference]: Start difference. First operand 216 states and 280 transitions. Second operand 8 states. [2020-12-22 08:36:23,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:23,218 INFO L93 Difference]: Finished difference Result 460 states and 615 transitions. [2020-12-22 08:36:23,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:36:23,218 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-12-22 08:36:23,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:23,221 INFO L225 Difference]: With dead ends: 460 [2020-12-22 08:36:23,221 INFO L226 Difference]: Without dead ends: 336 [2020-12-22 08:36:23,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:36:23,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-12-22 08:36:23,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 216. [2020-12-22 08:36:23,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-12-22 08:36:23,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 279 transitions. [2020-12-22 08:36:23,244 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 279 transitions. Word has length 49 [2020-12-22 08:36:23,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:23,244 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 279 transitions. [2020-12-22 08:36:23,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:36:23,244 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 279 transitions. [2020-12-22 08:36:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:36:23,245 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:23,245 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] [2020-12-22 08:36:23,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:36:23,246 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:23,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:23,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1308237609, now seen corresponding path program 1 times [2020-12-22 08:36:23,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:23,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325495743] [2020-12-22 08:36:23,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:23,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325495743] [2020-12-22 08:36:23,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:23,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:36:23,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925435024] [2020-12-22 08:36:23,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:36:23,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:23,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:36:23,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:36:23,786 INFO L87 Difference]: Start difference. First operand 216 states and 279 transitions. Second operand 19 states. [2020-12-22 08:36:23,971 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-12-22 08:36:25,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:25,784 INFO L93 Difference]: Finished difference Result 404 states and 530 transitions. [2020-12-22 08:36:25,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:36:25,784 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 51 [2020-12-22 08:36:25,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:25,787 INFO L225 Difference]: With dead ends: 404 [2020-12-22 08:36:25,787 INFO L226 Difference]: Without dead ends: 400 [2020-12-22 08:36:25,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=250, Invalid=1082, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 08:36:25,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-12-22 08:36:25,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 220. [2020-12-22 08:36:25,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-12-22 08:36:25,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 285 transitions. [2020-12-22 08:36:25,812 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 285 transitions. Word has length 51 [2020-12-22 08:36:25,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:25,812 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 285 transitions. [2020-12-22 08:36:25,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:36:25,812 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 285 transitions. [2020-12-22 08:36:25,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:36:25,813 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:25,813 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] [2020-12-22 08:36:25,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:36:25,814 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:25,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:25,814 INFO L82 PathProgramCache]: Analyzing trace with hash 766441193, now seen corresponding path program 1 times [2020-12-22 08:36:25,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:25,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992818812] [2020-12-22 08:36:25,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:26,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:26,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992818812] [2020-12-22 08:36:26,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:26,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:36:26,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457136897] [2020-12-22 08:36:26,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:36:26,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:26,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:36:26,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:36:26,393 INFO L87 Difference]: Start difference. First operand 220 states and 285 transitions. Second operand 19 states. [2020-12-22 08:36:26,589 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2020-12-22 08:36:27,612 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-12-22 08:36:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:28,582 INFO L93 Difference]: Finished difference Result 473 states and 644 transitions. [2020-12-22 08:36:28,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 08:36:28,582 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 51 [2020-12-22 08:36:28,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:28,585 INFO L225 Difference]: With dead ends: 473 [2020-12-22 08:36:28,585 INFO L226 Difference]: Without dead ends: 385 [2020-12-22 08:36:28,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=239, Invalid=883, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 08:36:28,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-12-22 08:36:28,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 226. [2020-12-22 08:36:28,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-22 08:36:28,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 293 transitions. [2020-12-22 08:36:28,609 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 293 transitions. Word has length 51 [2020-12-22 08:36:28,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:28,610 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 293 transitions. [2020-12-22 08:36:28,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:36:28,610 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 293 transitions. [2020-12-22 08:36:28,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:36:28,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:28,611 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] [2020-12-22 08:36:28,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:36:28,611 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:28,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:28,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1014075955, now seen corresponding path program 1 times [2020-12-22 08:36:28,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:28,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825555729] [2020-12-22 08:36:28,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:29,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:29,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825555729] [2020-12-22 08:36:29,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:29,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:36:29,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176590807] [2020-12-22 08:36:29,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:36:29,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:29,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:36:29,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:36:29,237 INFO L87 Difference]: Start difference. First operand 226 states and 293 transitions. Second operand 19 states. [2020-12-22 08:36:29,508 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-12-22 08:36:30,073 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-12-22 08:36:30,276 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-12-22 08:36:30,438 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-12-22 08:36:30,592 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-12-22 08:36:30,939 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-12-22 08:36:31,426 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-12-22 08:36:32,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:32,361 INFO L93 Difference]: Finished difference Result 504 states and 696 transitions. [2020-12-22 08:36:32,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:36:32,362 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 51 [2020-12-22 08:36:32,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:32,366 INFO L225 Difference]: With dead ends: 504 [2020-12-22 08:36:32,367 INFO L226 Difference]: Without dead ends: 498 [2020-12-22 08:36:32,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 08:36:32,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2020-12-22 08:36:32,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 226. [2020-12-22 08:36:32,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-12-22 08:36:32,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 292 transitions. [2020-12-22 08:36:32,403 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 292 transitions. Word has length 51 [2020-12-22 08:36:32,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:32,404 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 292 transitions. [2020-12-22 08:36:32,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:36:32,404 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 292 transitions. [2020-12-22 08:36:32,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:36:32,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:32,405 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] [2020-12-22 08:36:32,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:36:32,405 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:32,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:32,406 INFO L82 PathProgramCache]: Analyzing trace with hash -480854780, now seen corresponding path program 1 times [2020-12-22 08:36:32,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:32,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807572141] [2020-12-22 08:36:32,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:32,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:32,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807572141] [2020-12-22 08:36:32,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:32,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 08:36:32,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440146757] [2020-12-22 08:36:32,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:36:32,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:32,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:36:32,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:36:32,737 INFO L87 Difference]: Start difference. First operand 226 states and 292 transitions. Second operand 11 states. [2020-12-22 08:36:33,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:33,602 INFO L93 Difference]: Finished difference Result 434 states and 592 transitions. [2020-12-22 08:36:33,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:36:33,603 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-12-22 08:36:33,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:33,605 INFO L225 Difference]: With dead ends: 434 [2020-12-22 08:36:33,605 INFO L226 Difference]: Without dead ends: 349 [2020-12-22 08:36:33,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-12-22 08:36:33,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-12-22 08:36:33,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 225. [2020-12-22 08:36:33,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-12-22 08:36:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 290 transitions. [2020-12-22 08:36:33,636 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 290 transitions. Word has length 51 [2020-12-22 08:36:33,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:33,637 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 290 transitions. [2020-12-22 08:36:33,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:36:33,637 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 290 transitions. [2020-12-22 08:36:33,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:36:33,637 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:33,638 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] [2020-12-22 08:36:33,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:36:33,638 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:33,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:33,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1185149594, now seen corresponding path program 1 times [2020-12-22 08:36:33,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:33,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857711831] [2020-12-22 08:36:33,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:33,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:33,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857711831] [2020-12-22 08:36:33,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:33,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:36:33,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114228353] [2020-12-22 08:36:33,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:36:33,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:33,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:36:33,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:36:33,757 INFO L87 Difference]: Start difference. First operand 225 states and 290 transitions. Second operand 9 states. [2020-12-22 08:36:34,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:34,279 INFO L93 Difference]: Finished difference Result 360 states and 472 transitions. [2020-12-22 08:36:34,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 08:36:34,280 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-12-22 08:36:34,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:34,281 INFO L225 Difference]: With dead ends: 360 [2020-12-22 08:36:34,282 INFO L226 Difference]: Without dead ends: 353 [2020-12-22 08:36:34,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:36:34,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-12-22 08:36:34,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 225. [2020-12-22 08:36:34,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-12-22 08:36:34,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 288 transitions. [2020-12-22 08:36:34,315 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 288 transitions. Word has length 52 [2020-12-22 08:36:34,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:34,315 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 288 transitions. [2020-12-22 08:36:34,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:36:34,315 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 288 transitions. [2020-12-22 08:36:34,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:36:34,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:34,316 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] [2020-12-22 08:36:34,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:36:34,316 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:34,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:34,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1721906586, now seen corresponding path program 1 times [2020-12-22 08:36:34,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:34,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730211464] [2020-12-22 08:36:34,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:34,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730211464] [2020-12-22 08:36:34,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:34,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:36:34,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232378874] [2020-12-22 08:36:34,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:36:34,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:34,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:36:34,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:36:34,476 INFO L87 Difference]: Start difference. First operand 225 states and 288 transitions. Second operand 10 states. [2020-12-22 08:36:35,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:35,641 INFO L93 Difference]: Finished difference Result 564 states and 775 transitions. [2020-12-22 08:36:35,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:36:35,642 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-12-22 08:36:35,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:35,645 INFO L225 Difference]: With dead ends: 564 [2020-12-22 08:36:35,645 INFO L226 Difference]: Without dead ends: 462 [2020-12-22 08:36:35,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:36:35,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2020-12-22 08:36:35,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 225. [2020-12-22 08:36:35,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-12-22 08:36:35,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 287 transitions. [2020-12-22 08:36:35,684 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 287 transitions. Word has length 52 [2020-12-22 08:36:35,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:35,684 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 287 transitions. [2020-12-22 08:36:35,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:36:35,685 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 287 transitions. [2020-12-22 08:36:35,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:36:35,685 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:35,685 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] [2020-12-22 08:36:35,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:36:35,686 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:35,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:35,686 INFO L82 PathProgramCache]: Analyzing trace with hash -314743810, now seen corresponding path program 1 times [2020-12-22 08:36:35,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:35,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138973939] [2020-12-22 08:36:35,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:36,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138973939] [2020-12-22 08:36:36,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:36,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:36:36,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926770903] [2020-12-22 08:36:36,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:36:36,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:36,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:36:36,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:36:36,386 INFO L87 Difference]: Start difference. First operand 225 states and 287 transitions. Second operand 16 states. [2020-12-22 08:36:36,976 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-12-22 08:36:37,237 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-12-22 08:36:37,541 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-12-22 08:36:37,825 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-12-22 08:36:38,259 WARN L197 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-12-22 08:36:38,552 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 08:36:39,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:39,573 INFO L93 Difference]: Finished difference Result 616 states and 848 transitions. [2020-12-22 08:36:39,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:36:39,574 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 52 [2020-12-22 08:36:39,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:39,577 INFO L225 Difference]: With dead ends: 616 [2020-12-22 08:36:39,577 INFO L226 Difference]: Without dead ends: 600 [2020-12-22 08:36:39,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2020-12-22 08:36:39,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-12-22 08:36:39,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 217. [2020-12-22 08:36:39,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-12-22 08:36:39,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 277 transitions. [2020-12-22 08:36:39,620 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 277 transitions. Word has length 52 [2020-12-22 08:36:39,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:39,620 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 277 transitions. [2020-12-22 08:36:39,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:36:39,620 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 277 transitions. [2020-12-22 08:36:39,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:36:39,621 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:39,621 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] [2020-12-22 08:36:39,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:36:39,621 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:39,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:39,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1294616090, now seen corresponding path program 1 times [2020-12-22 08:36:39,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:39,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860142653] [2020-12-22 08:36:39,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:39,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:39,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860142653] [2020-12-22 08:36:39,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:39,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 08:36:39,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258984507] [2020-12-22 08:36:39,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 08:36:39,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:39,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 08:36:39,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:36:39,823 INFO L87 Difference]: Start difference. First operand 217 states and 277 transitions. Second operand 11 states. [2020-12-22 08:36:41,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:41,831 INFO L93 Difference]: Finished difference Result 1003 states and 1421 transitions. [2020-12-22 08:36:41,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 08:36:41,832 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-12-22 08:36:41,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:41,837 INFO L225 Difference]: With dead ends: 1003 [2020-12-22 08:36:41,838 INFO L226 Difference]: Without dead ends: 996 [2020-12-22 08:36:41,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2020-12-22 08:36:41,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2020-12-22 08:36:41,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 217. [2020-12-22 08:36:41,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-12-22 08:36:41,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 276 transitions. [2020-12-22 08:36:41,889 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 276 transitions. Word has length 52 [2020-12-22 08:36:41,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:41,889 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 276 transitions. [2020-12-22 08:36:41,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 08:36:41,889 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 276 transitions. [2020-12-22 08:36:41,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:36:41,890 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:41,890 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] [2020-12-22 08:36:41,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:36:41,890 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:41,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:41,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1671010270, now seen corresponding path program 1 times [2020-12-22 08:36:41,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:41,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121088399] [2020-12-22 08:36:41,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:42,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:42,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121088399] [2020-12-22 08:36:42,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:42,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-22 08:36:42,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049368966] [2020-12-22 08:36:42,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 08:36:42,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:42,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 08:36:42,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:36:42,289 INFO L87 Difference]: Start difference. First operand 217 states and 276 transitions. Second operand 15 states. [2020-12-22 08:36:43,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:43,436 INFO L93 Difference]: Finished difference Result 441 states and 590 transitions. [2020-12-22 08:36:43,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:36:43,437 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-12-22 08:36:43,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:43,439 INFO L225 Difference]: With dead ends: 441 [2020-12-22 08:36:43,439 INFO L226 Difference]: Without dead ends: 353 [2020-12-22 08:36:43,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:36:43,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-12-22 08:36:43,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 211. [2020-12-22 08:36:43,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-12-22 08:36:43,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 268 transitions. [2020-12-22 08:36:43,484 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 268 transitions. Word has length 52 [2020-12-22 08:36:43,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:43,485 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 268 transitions. [2020-12-22 08:36:43,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 08:36:43,485 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 268 transitions. [2020-12-22 08:36:43,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:36:43,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:43,486 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] [2020-12-22 08:36:43,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:36:43,486 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:43,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:43,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1834026902, now seen corresponding path program 1 times [2020-12-22 08:36:43,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:43,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691434086] [2020-12-22 08:36:43,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:43,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:43,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691434086] [2020-12-22 08:36:43,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:43,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-22 08:36:43,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501681688] [2020-12-22 08:36:43,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 08:36:43,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:43,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 08:36:43,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:36:43,840 INFO L87 Difference]: Start difference. First operand 211 states and 268 transitions. Second operand 13 states. [2020-12-22 08:36:45,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:45,242 INFO L93 Difference]: Finished difference Result 879 states and 1246 transitions. [2020-12-22 08:36:45,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:36:45,243 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-12-22 08:36:45,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:45,248 INFO L225 Difference]: With dead ends: 879 [2020-12-22 08:36:45,248 INFO L226 Difference]: Without dead ends: 847 [2020-12-22 08:36:45,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=180, Invalid=470, Unknown=0, NotChecked=0, Total=650 [2020-12-22 08:36:45,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-12-22 08:36:45,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 179. [2020-12-22 08:36:45,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-12-22 08:36:45,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 233 transitions. [2020-12-22 08:36:45,301 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 233 transitions. Word has length 52 [2020-12-22 08:36:45,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:45,302 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 233 transitions. [2020-12-22 08:36:45,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 08:36:45,302 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 233 transitions. [2020-12-22 08:36:45,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:36:45,303 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:45,303 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] [2020-12-22 08:36:45,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:36:45,303 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:45,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:45,304 INFO L82 PathProgramCache]: Analyzing trace with hash -988369889, now seen corresponding path program 1 times [2020-12-22 08:36:45,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:45,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157406353] [2020-12-22 08:36:45,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:45,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:45,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157406353] [2020-12-22 08:36:45,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:45,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:36:45,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883669280] [2020-12-22 08:36:45,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:36:45,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:45,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:36:45,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:36:45,415 INFO L87 Difference]: Start difference. First operand 179 states and 233 transitions. Second operand 9 states. [2020-12-22 08:36:45,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:45,936 INFO L93 Difference]: Finished difference Result 328 states and 450 transitions. [2020-12-22 08:36:45,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 08:36:45,936 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-12-22 08:36:45,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:45,937 INFO L225 Difference]: With dead ends: 328 [2020-12-22 08:36:45,938 INFO L226 Difference]: Without dead ends: 226 [2020-12-22 08:36:45,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-12-22 08:36:45,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-22 08:36:45,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 179. [2020-12-22 08:36:45,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-12-22 08:36:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 232 transitions. [2020-12-22 08:36:45,984 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 232 transitions. Word has length 53 [2020-12-22 08:36:45,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:45,985 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 232 transitions. [2020-12-22 08:36:45,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:36:45,985 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 232 transitions. [2020-12-22 08:36:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:36:45,985 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:45,985 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] [2020-12-22 08:36:45,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:36:45,986 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:45,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:45,986 INFO L82 PathProgramCache]: Analyzing trace with hash 653628022, now seen corresponding path program 1 times [2020-12-22 08:36:45,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:45,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977549973] [2020-12-22 08:36:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:46,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:46,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977549973] [2020-12-22 08:36:46,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:46,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-12-22 08:36:46,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224741757] [2020-12-22 08:36:46,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 08:36:46,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:46,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 08:36:46,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:36:46,470 INFO L87 Difference]: Start difference. First operand 179 states and 232 transitions. Second operand 18 states. [2020-12-22 08:36:46,670 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-12-22 08:36:47,265 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-12-22 08:36:48,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:48,310 INFO L93 Difference]: Finished difference Result 303 states and 404 transitions. [2020-12-22 08:36:48,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:36:48,312 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 54 [2020-12-22 08:36:48,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:48,314 INFO L225 Difference]: With dead ends: 303 [2020-12-22 08:36:48,314 INFO L226 Difference]: Without dead ends: 295 [2020-12-22 08:36:48,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=239, Invalid=951, Unknown=0, NotChecked=0, Total=1190 [2020-12-22 08:36:48,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-12-22 08:36:48,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 179. [2020-12-22 08:36:48,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-12-22 08:36:48,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 231 transitions. [2020-12-22 08:36:48,362 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 231 transitions. Word has length 54 [2020-12-22 08:36:48,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:48,362 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 231 transitions. [2020-12-22 08:36:48,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 08:36:48,363 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 231 transitions. [2020-12-22 08:36:48,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:36:48,363 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:48,363 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] [2020-12-22 08:36:48,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:36:48,364 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:48,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:48,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1899159370, now seen corresponding path program 1 times [2020-12-22 08:36:48,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:48,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784515561] [2020-12-22 08:36:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:48,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:48,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784515561] [2020-12-22 08:36:48,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:48,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-12-22 08:36:48,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638227220] [2020-12-22 08:36:48,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 08:36:48,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:48,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 08:36:48,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:36:48,850 INFO L87 Difference]: Start difference. First operand 179 states and 231 transitions. Second operand 18 states. [2020-12-22 08:36:49,008 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-12-22 08:36:49,532 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-12-22 08:36:50,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:50,663 INFO L93 Difference]: Finished difference Result 373 states and 515 transitions. [2020-12-22 08:36:50,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 08:36:50,664 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 54 [2020-12-22 08:36:50,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:50,666 INFO L225 Difference]: With dead ends: 373 [2020-12-22 08:36:50,666 INFO L226 Difference]: Without dead ends: 367 [2020-12-22 08:36:50,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=200, Invalid=856, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 08:36:50,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-12-22 08:36:50,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 185. [2020-12-22 08:36:50,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-12-22 08:36:50,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 239 transitions. [2020-12-22 08:36:50,716 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 239 transitions. Word has length 54 [2020-12-22 08:36:50,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:50,717 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 239 transitions. [2020-12-22 08:36:50,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 08:36:50,717 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 239 transitions. [2020-12-22 08:36:50,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:36:50,717 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:50,718 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] [2020-12-22 08:36:50,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:36:50,718 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:50,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:50,719 INFO L82 PathProgramCache]: Analyzing trace with hash 2098262835, now seen corresponding path program 1 times [2020-12-22 08:36:50,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:50,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646862715] [2020-12-22 08:36:50,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:51,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:51,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646862715] [2020-12-22 08:36:51,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:51,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 08:36:51,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492717803] [2020-12-22 08:36:51,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:36:51,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:51,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:36:51,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:36:51,050 INFO L87 Difference]: Start difference. First operand 185 states and 239 transitions. Second operand 12 states. [2020-12-22 08:36:52,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:52,042 INFO L93 Difference]: Finished difference Result 485 states and 674 transitions. [2020-12-22 08:36:52,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:36:52,043 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-12-22 08:36:52,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:52,045 INFO L225 Difference]: With dead ends: 485 [2020-12-22 08:36:52,045 INFO L226 Difference]: Without dead ends: 479 [2020-12-22 08:36:52,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:36:52,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-12-22 08:36:52,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 173. [2020-12-22 08:36:52,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-12-22 08:36:52,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 224 transitions. [2020-12-22 08:36:52,102 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 224 transitions. Word has length 55 [2020-12-22 08:36:52,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:52,102 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 224 transitions. [2020-12-22 08:36:52,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 08:36:52,102 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 224 transitions. [2020-12-22 08:36:52,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:36:52,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:52,103 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] [2020-12-22 08:36:52,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:36:52,103 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:52,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:52,104 INFO L82 PathProgramCache]: Analyzing trace with hash -220748721, now seen corresponding path program 1 times [2020-12-22 08:36:52,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:52,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717637292] [2020-12-22 08:36:52,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:52,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:52,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717637292] [2020-12-22 08:36:52,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:52,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-22 08:36:52,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855023968] [2020-12-22 08:36:52,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 08:36:52,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:52,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 08:36:52,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:36:52,613 INFO L87 Difference]: Start difference. First operand 173 states and 224 transitions. Second operand 14 states. [2020-12-22 08:36:53,201 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-12-22 08:36:53,353 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-12-22 08:36:53,501 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-12-22 08:36:53,640 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 08:36:54,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:54,225 INFO L93 Difference]: Finished difference Result 451 states and 638 transitions. [2020-12-22 08:36:54,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 08:36:54,226 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-12-22 08:36:54,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:54,227 INFO L225 Difference]: With dead ends: 451 [2020-12-22 08:36:54,227 INFO L226 Difference]: Without dead ends: 439 [2020-12-22 08:36:54,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2020-12-22 08:36:54,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-12-22 08:36:54,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 161. [2020-12-22 08:36:54,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-12-22 08:36:54,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 212 transitions. [2020-12-22 08:36:54,268 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 212 transitions. Word has length 55 [2020-12-22 08:36:54,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:54,268 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 212 transitions. [2020-12-22 08:36:54,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 08:36:54,268 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 212 transitions. [2020-12-22 08:36:54,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 08:36:54,269 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:54,269 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] [2020-12-22 08:36:54,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:36:54,269 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:54,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:54,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1406506919, now seen corresponding path program 1 times [2020-12-22 08:36:54,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:54,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352672409] [2020-12-22 08:36:54,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:54,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352672409] [2020-12-22 08:36:54,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:54,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:36:54,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313507651] [2020-12-22 08:36:54,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:36:54,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:54,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:36:54,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:36:54,320 INFO L87 Difference]: Start difference. First operand 161 states and 212 transitions. Second operand 3 states. [2020-12-22 08:36:54,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:54,442 INFO L93 Difference]: Finished difference Result 321 states and 452 transitions. [2020-12-22 08:36:54,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:36:54,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 08:36:54,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:54,445 INFO L225 Difference]: With dead ends: 321 [2020-12-22 08:36:54,445 INFO L226 Difference]: Without dead ends: 237 [2020-12-22 08:36:54,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:36:54,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-12-22 08:36:54,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 235. [2020-12-22 08:36:54,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-12-22 08:36:54,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 321 transitions. [2020-12-22 08:36:54,535 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 321 transitions. Word has length 72 [2020-12-22 08:36:54,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:54,535 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 321 transitions. [2020-12-22 08:36:54,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:36:54,536 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 321 transitions. [2020-12-22 08:36:54,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 08:36:54,537 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:54,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:36:54,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:36:54,537 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:54,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:54,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1673936966, now seen corresponding path program 1 times [2020-12-22 08:36:54,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:54,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412434583] [2020-12-22 08:36:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:54,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:54,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412434583] [2020-12-22 08:36:54,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:54,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:36:54,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510788204] [2020-12-22 08:36:54,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:36:54,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:54,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:36:54,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:36:54,620 INFO L87 Difference]: Start difference. First operand 235 states and 321 transitions. Second operand 5 states. [2020-12-22 08:36:54,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:54,973 INFO L93 Difference]: Finished difference Result 725 states and 1055 transitions. [2020-12-22 08:36:54,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:36:54,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-12-22 08:36:54,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:54,977 INFO L225 Difference]: With dead ends: 725 [2020-12-22 08:36:54,977 INFO L226 Difference]: Without dead ends: 567 [2020-12-22 08:36:54,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:36:54,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-12-22 08:36:55,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 317. [2020-12-22 08:36:55,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-12-22 08:36:55,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 446 transitions. [2020-12-22 08:36:55,112 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 446 transitions. Word has length 74 [2020-12-22 08:36:55,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:55,113 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 446 transitions. [2020-12-22 08:36:55,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:36:55,113 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 446 transitions. [2020-12-22 08:36:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 08:36:55,114 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:55,114 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] [2020-12-22 08:36:55,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 08:36:55,115 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:55,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:55,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1695280855, now seen corresponding path program 1 times [2020-12-22 08:36:55,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:55,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541134576] [2020-12-22 08:36:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:55,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:55,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541134576] [2020-12-22 08:36:55,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:55,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:36:55,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908167104] [2020-12-22 08:36:55,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:36:55,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:55,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:36:55,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:36:55,193 INFO L87 Difference]: Start difference. First operand 317 states and 446 transitions. Second operand 3 states. [2020-12-22 08:36:55,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:55,438 INFO L93 Difference]: Finished difference Result 723 states and 1059 transitions. [2020-12-22 08:36:55,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:36:55,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-22 08:36:55,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:55,441 INFO L225 Difference]: With dead ends: 723 [2020-12-22 08:36:55,442 INFO L226 Difference]: Without dead ends: 483 [2020-12-22 08:36:55,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:36:55,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-12-22 08:36:55,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 481. [2020-12-22 08:36:55,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2020-12-22 08:36:55,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 688 transitions. [2020-12-22 08:36:55,652 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 688 transitions. Word has length 74 [2020-12-22 08:36:55,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:55,653 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 688 transitions. [2020-12-22 08:36:55,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:36:55,653 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 688 transitions. [2020-12-22 08:36:55,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 08:36:55,654 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:55,654 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] [2020-12-22 08:36:55,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 08:36:55,654 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:55,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:55,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1859946120, now seen corresponding path program 1 times [2020-12-22 08:36:55,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:55,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60567037] [2020-12-22 08:36:55,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:55,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60567037] [2020-12-22 08:36:55,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:55,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:36:55,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397503716] [2020-12-22 08:36:55,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:36:55,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:55,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:36:55,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:36:55,719 INFO L87 Difference]: Start difference. First operand 481 states and 688 transitions. Second operand 3 states. [2020-12-22 08:36:56,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:56,091 INFO L93 Difference]: Finished difference Result 1229 states and 1794 transitions. [2020-12-22 08:36:56,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:36:56,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-22 08:36:56,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:56,096 INFO L225 Difference]: With dead ends: 1229 [2020-12-22 08:36:56,096 INFO L226 Difference]: Without dead ends: 825 [2020-12-22 08:36:56,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:36:56,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-12-22 08:36:56,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 813. [2020-12-22 08:36:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 813 states. [2020-12-22 08:36:56,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1157 transitions. [2020-12-22 08:36:56,436 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1157 transitions. Word has length 74 [2020-12-22 08:36:56,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:56,436 INFO L481 AbstractCegarLoop]: Abstraction has 813 states and 1157 transitions. [2020-12-22 08:36:56,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:36:56,436 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1157 transitions. [2020-12-22 08:36:56,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 08:36:56,438 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:56,438 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] [2020-12-22 08:36:56,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 08:36:56,438 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:56,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:56,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1889765056, now seen corresponding path program 1 times [2020-12-22 08:36:56,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:56,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968212826] [2020-12-22 08:36:56,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:56,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968212826] [2020-12-22 08:36:56,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:56,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:36:56,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123552699] [2020-12-22 08:36:56,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:36:56,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:56,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:36:56,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:36:56,515 INFO L87 Difference]: Start difference. First operand 813 states and 1157 transitions. Second operand 5 states. [2020-12-22 08:36:57,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:57,190 INFO L93 Difference]: Finished difference Result 2193 states and 3163 transitions. [2020-12-22 08:36:57,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:36:57,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-12-22 08:36:57,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:57,197 INFO L225 Difference]: With dead ends: 2193 [2020-12-22 08:36:57,197 INFO L226 Difference]: Without dead ends: 1755 [2020-12-22 08:36:57,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:36:57,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2020-12-22 08:36:57,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1261. [2020-12-22 08:36:57,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1261 states. [2020-12-22 08:36:57,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1807 transitions. [2020-12-22 08:36:57,745 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1807 transitions. Word has length 74 [2020-12-22 08:36:57,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:57,745 INFO L481 AbstractCegarLoop]: Abstraction has 1261 states and 1807 transitions. [2020-12-22 08:36:57,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:36:57,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1807 transitions. [2020-12-22 08:36:57,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 08:36:57,747 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:57,748 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] [2020-12-22 08:36:57,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 08:36:57,748 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:57,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:57,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1073266559, now seen corresponding path program 1 times [2020-12-22 08:36:57,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:57,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486687316] [2020-12-22 08:36:57,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:57,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:57,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486687316] [2020-12-22 08:36:57,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:57,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:36:57,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414274964] [2020-12-22 08:36:57,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:36:57,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:57,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:36:57,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:36:57,800 INFO L87 Difference]: Start difference. First operand 1261 states and 1807 transitions. Second operand 3 states. [2020-12-22 08:36:58,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:58,786 INFO L93 Difference]: Finished difference Result 3501 states and 5029 transitions. [2020-12-22 08:36:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:36:58,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 08:36:58,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:58,793 INFO L225 Difference]: With dead ends: 3501 [2020-12-22 08:36:58,794 INFO L226 Difference]: Without dead ends: 2317 [2020-12-22 08:36:58,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:36:58,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2020-12-22 08:36:59,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 2187. [2020-12-22 08:36:59,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2187 states. [2020-12-22 08:36:59,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3113 transitions. [2020-12-22 08:36:59,621 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3113 transitions. Word has length 75 [2020-12-22 08:36:59,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:59,621 INFO L481 AbstractCegarLoop]: Abstraction has 2187 states and 3113 transitions. [2020-12-22 08:36:59,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:36:59,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3113 transitions. [2020-12-22 08:36:59,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 08:36:59,622 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:59,623 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] [2020-12-22 08:36:59,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 08:36:59,623 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:59,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:59,624 INFO L82 PathProgramCache]: Analyzing trace with hash -391890934, now seen corresponding path program 1 times [2020-12-22 08:36:59,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:59,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766402786] [2020-12-22 08:36:59,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:59,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766402786] [2020-12-22 08:36:59,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:59,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:36:59,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882383955] [2020-12-22 08:36:59,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:36:59,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:59,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:36:59,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:36:59,673 INFO L87 Difference]: Start difference. First operand 2187 states and 3113 transitions. Second operand 3 states. [2020-12-22 08:37:01,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:01,258 INFO L93 Difference]: Finished difference Result 6151 states and 8723 transitions. [2020-12-22 08:37:01,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:37:01,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 08:37:01,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:01,272 INFO L225 Difference]: With dead ends: 6151 [2020-12-22 08:37:01,272 INFO L226 Difference]: Without dead ends: 4041 [2020-12-22 08:37:01,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:37:01,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4041 states. [2020-12-22 08:37:02,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4041 to 3783. [2020-12-22 08:37:02,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3783 states. [2020-12-22 08:37:02,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3783 states to 3783 states and 5309 transitions. [2020-12-22 08:37:02,628 INFO L78 Accepts]: Start accepts. Automaton has 3783 states and 5309 transitions. Word has length 76 [2020-12-22 08:37:02,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:02,629 INFO L481 AbstractCegarLoop]: Abstraction has 3783 states and 5309 transitions. [2020-12-22 08:37:02,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:37:02,629 INFO L276 IsEmpty]: Start isEmpty. Operand 3783 states and 5309 transitions. [2020-12-22 08:37:02,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:37:02,630 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:02,630 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] [2020-12-22 08:37:02,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 08:37:02,631 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:02,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:02,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1183434290, now seen corresponding path program 1 times [2020-12-22 08:37:02,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:02,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201368560] [2020-12-22 08:37:02,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:02,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201368560] [2020-12-22 08:37:02,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:02,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:37:02,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948763648] [2020-12-22 08:37:02,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:37:02,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:02,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:37:02,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:37:02,723 INFO L87 Difference]: Start difference. First operand 3783 states and 5309 transitions. Second operand 6 states. [2020-12-22 08:37:05,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:05,494 INFO L93 Difference]: Finished difference Result 6603 states and 9149 transitions. [2020-12-22 08:37:05,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:37:05,501 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-22 08:37:05,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:05,529 INFO L225 Difference]: With dead ends: 6603 [2020-12-22 08:37:05,529 INFO L226 Difference]: Without dead ends: 6601 [2020-12-22 08:37:05,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:37:05,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6601 states. [2020-12-22 08:37:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6601 to 3927. [2020-12-22 08:37:07,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3927 states. [2020-12-22 08:37:07,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 5421 transitions. [2020-12-22 08:37:07,034 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 5421 transitions. Word has length 77 [2020-12-22 08:37:07,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:07,034 INFO L481 AbstractCegarLoop]: Abstraction has 3927 states and 5421 transitions. [2020-12-22 08:37:07,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:37:07,034 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 5421 transitions. [2020-12-22 08:37:07,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:37:07,035 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:07,035 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] [2020-12-22 08:37:07,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 08:37:07,035 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:07,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:07,036 INFO L82 PathProgramCache]: Analyzing trace with hash -696816699, now seen corresponding path program 1 times [2020-12-22 08:37:07,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:07,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718567580] [2020-12-22 08:37:07,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:07,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:07,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718567580] [2020-12-22 08:37:07,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:07,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:37:07,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083858458] [2020-12-22 08:37:07,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:37:07,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:07,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:37:07,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:37:07,153 INFO L87 Difference]: Start difference. First operand 3927 states and 5421 transitions. Second operand 5 states. [2020-12-22 08:37:09,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:09,549 INFO L93 Difference]: Finished difference Result 7855 states and 10889 transitions. [2020-12-22 08:37:09,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:37:09,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-12-22 08:37:09,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:09,578 INFO L225 Difference]: With dead ends: 7855 [2020-12-22 08:37:09,579 INFO L226 Difference]: Without dead ends: 6445 [2020-12-22 08:37:09,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:37:09,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6445 states. [2020-12-22 08:37:11,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6445 to 4911. [2020-12-22 08:37:11,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4911 states. [2020-12-22 08:37:11,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4911 states to 4911 states and 6781 transitions. [2020-12-22 08:37:11,515 INFO L78 Accepts]: Start accepts. Automaton has 4911 states and 6781 transitions. Word has length 77 [2020-12-22 08:37:11,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:11,516 INFO L481 AbstractCegarLoop]: Abstraction has 4911 states and 6781 transitions. [2020-12-22 08:37:11,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:37:11,516 INFO L276 IsEmpty]: Start isEmpty. Operand 4911 states and 6781 transitions. [2020-12-22 08:37:11,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:37:11,517 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:11,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:37:11,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 08:37:11,518 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:11,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:11,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1657778714, now seen corresponding path program 1 times [2020-12-22 08:37:11,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:11,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113822778] [2020-12-22 08:37:11,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:11,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:11,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113822778] [2020-12-22 08:37:11,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:11,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:37:11,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302590810] [2020-12-22 08:37:11,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:37:11,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:11,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:37:11,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:37:11,576 INFO L87 Difference]: Start difference. First operand 4911 states and 6781 transitions. Second operand 3 states. [2020-12-22 08:37:14,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:14,700 INFO L93 Difference]: Finished difference Result 12755 states and 17595 transitions. [2020-12-22 08:37:14,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:37:14,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 08:37:14,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:14,716 INFO L225 Difference]: With dead ends: 12755 [2020-12-22 08:37:14,716 INFO L226 Difference]: Without dead ends: 7921 [2020-12-22 08:37:14,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:37:14,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7921 states. [2020-12-22 08:37:17,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7921 to 7311. [2020-12-22 08:37:17,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7311 states. [2020-12-22 08:37:17,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7311 states to 7311 states and 9909 transitions. [2020-12-22 08:37:17,613 INFO L78 Accepts]: Start accepts. Automaton has 7311 states and 9909 transitions. Word has length 78 [2020-12-22 08:37:17,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:17,614 INFO L481 AbstractCegarLoop]: Abstraction has 7311 states and 9909 transitions. [2020-12-22 08:37:17,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:37:17,614 INFO L276 IsEmpty]: Start isEmpty. Operand 7311 states and 9909 transitions. [2020-12-22 08:37:17,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:37:17,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:17,617 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:37:17,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 08:37:17,617 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:17,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:17,618 INFO L82 PathProgramCache]: Analyzing trace with hash 910821393, now seen corresponding path program 1 times [2020-12-22 08:37:17,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:17,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47934535] [2020-12-22 08:37:17,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:17,670 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:17,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47934535] [2020-12-22 08:37:17,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:17,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:37:17,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118232836] [2020-12-22 08:37:17,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:37:17,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:17,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:37:17,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:37:17,672 INFO L87 Difference]: Start difference. First operand 7311 states and 9909 transitions. Second operand 3 states. [2020-12-22 08:37:20,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:20,378 INFO L93 Difference]: Finished difference Result 14433 states and 19573 transitions. [2020-12-22 08:37:20,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:37:20,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-22 08:37:20,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:20,398 INFO L225 Difference]: With dead ends: 14433 [2020-12-22 08:37:20,399 INFO L226 Difference]: Without dead ends: 7199 [2020-12-22 08:37:20,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:37:20,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7199 states. [2020-12-22 08:37:23,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7199 to 7197. [2020-12-22 08:37:23,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7197 states. [2020-12-22 08:37:23,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7197 states to 7197 states and 9589 transitions. [2020-12-22 08:37:23,238 INFO L78 Accepts]: Start accepts. Automaton has 7197 states and 9589 transitions. Word has length 99 [2020-12-22 08:37:23,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:23,238 INFO L481 AbstractCegarLoop]: Abstraction has 7197 states and 9589 transitions. [2020-12-22 08:37:23,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:37:23,238 INFO L276 IsEmpty]: Start isEmpty. Operand 7197 states and 9589 transitions. [2020-12-22 08:37:23,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:37:23,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:23,241 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:37:23,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 08:37:23,241 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:23,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:23,242 INFO L82 PathProgramCache]: Analyzing trace with hash 412335050, now seen corresponding path program 1 times [2020-12-22 08:37:23,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:23,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151645017] [2020-12-22 08:37:23,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:23,474 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:23,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151645017] [2020-12-22 08:37:23,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651560998] [2020-12-22 08:37:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:37:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:23,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 08:37:23,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:37:23,950 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 08:37:24,025 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 08:37:24,152 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 08:37:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:37:24,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:37:24,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2020-12-22 08:37:24,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446467264] [2020-12-22 08:37:24,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 08:37:24,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:24,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 08:37:24,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-12-22 08:37:24,431 INFO L87 Difference]: Start difference. First operand 7197 states and 9589 transitions. Second operand 18 states. [2020-12-22 08:37:26,806 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2020-12-22 08:37:27,362 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 35 [2020-12-22 08:37:28,760 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-12-22 08:37:28,954 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-12-22 08:37:30,577 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2020-12-22 08:37:30,933 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-12-22 08:37:37,466 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-12-22 08:37:56,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:56,575 INFO L93 Difference]: Finished difference Result 61925 states and 81496 transitions. [2020-12-22 08:37:56,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-12-22 08:37:56,576 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 99 [2020-12-22 08:37:56,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:56,701 INFO L225 Difference]: With dead ends: 61925 [2020-12-22 08:37:56,702 INFO L226 Difference]: Without dead ends: 54805 [2020-12-22 08:37:56,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2660 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1537, Invalid=6653, Unknown=0, NotChecked=0, Total=8190 [2020-12-22 08:37:56,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54805 states. [2020-12-22 08:38:03,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54805 to 15407. [2020-12-22 08:38:03,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15407 states. [2020-12-22 08:38:03,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15407 states to 15407 states and 20393 transitions. [2020-12-22 08:38:03,971 INFO L78 Accepts]: Start accepts. Automaton has 15407 states and 20393 transitions. Word has length 99 [2020-12-22 08:38:03,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:38:03,972 INFO L481 AbstractCegarLoop]: Abstraction has 15407 states and 20393 transitions. [2020-12-22 08:38:03,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 08:38:03,972 INFO L276 IsEmpty]: Start isEmpty. Operand 15407 states and 20393 transitions. [2020-12-22 08:38:03,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 08:38:03,977 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:38:03,978 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:38:04,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-22 08:38:04,193 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:38:04,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:38:04,194 INFO L82 PathProgramCache]: Analyzing trace with hash 667868883, now seen corresponding path program 1 times [2020-12-22 08:38:04,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:38:04,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704379993] [2020-12-22 08:38:04,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:38:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:38:04,267 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 08:38:04,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704379993] [2020-12-22 08:38:04,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:38:04,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:38:04,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597573856] [2020-12-22 08:38:04,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:38:04,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:38:04,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:38:04,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:38:04,269 INFO L87 Difference]: Start difference. First operand 15407 states and 20393 transitions. Second operand 3 states. [2020-12-22 08:38:10,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:38:10,154 INFO L93 Difference]: Finished difference Result 29409 states and 39126 transitions. [2020-12-22 08:38:10,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:38:10,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-12-22 08:38:10,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:38:10,181 INFO L225 Difference]: With dead ends: 29409 [2020-12-22 08:38:10,181 INFO L226 Difference]: Without dead ends: 14093 [2020-12-22 08:38:10,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:38:10,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14093 states. [2020-12-22 08:38:16,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14093 to 14093. [2020-12-22 08:38:16,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14093 states. [2020-12-22 08:38:16,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14093 states to 14093 states and 18595 transitions. [2020-12-22 08:38:16,248 INFO L78 Accepts]: Start accepts. Automaton has 14093 states and 18595 transitions. Word has length 100 [2020-12-22 08:38:16,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:38:16,249 INFO L481 AbstractCegarLoop]: Abstraction has 14093 states and 18595 transitions. [2020-12-22 08:38:16,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:38:16,249 INFO L276 IsEmpty]: Start isEmpty. Operand 14093 states and 18595 transitions. [2020-12-22 08:38:16,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 08:38:16,253 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:38:16,253 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:38:16,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 08:38:16,253 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:38:16,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:38:16,254 INFO L82 PathProgramCache]: Analyzing trace with hash -548192524, now seen corresponding path program 1 times [2020-12-22 08:38:16,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:38:16,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683875552] [2020-12-22 08:38:16,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:38:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:38:16,575 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:38:16,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683875552] [2020-12-22 08:38:16,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77501503] [2020-12-22 08:38:16,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:38:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:38:16,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 08:38:16,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:38:16,893 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 08:38:16,938 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 08:38:17,111 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 08:38:17,477 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 29 [2020-12-22 08:38:17,748 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:38:17,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:38:17,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2020-12-22 08:38:17,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580313714] [2020-12-22 08:38:17,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:38:17,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:38:17,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:38:17,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:38:17,750 INFO L87 Difference]: Start difference. First operand 14093 states and 18595 transitions. Second operand 19 states. [2020-12-22 08:38:20,134 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-12-22 08:38:20,343 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2020-12-22 08:38:20,674 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-12-22 08:38:20,827 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-12-22 08:38:21,027 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-12-22 08:38:21,440 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2020-12-22 08:38:21,641 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-12-22 08:38:22,338 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2020-12-22 08:38:22,900 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2020-12-22 08:38:23,626 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2020-12-22 08:38:23,849 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2020-12-22 08:38:24,029 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2020-12-22 08:38:24,360 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2020-12-22 08:38:24,665 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2020-12-22 08:38:24,862 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2020-12-22 08:38:25,021 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-12-22 08:38:25,581 WARN L197 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 74 [2020-12-22 08:38:25,808 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2020-12-22 08:38:26,211 WARN L197 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 74 [2020-12-22 08:38:26,437 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-12-22 08:38:26,816 WARN L197 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2020-12-22 08:38:27,013 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-12-22 08:38:27,195 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-12-22 08:38:27,994 WARN L197 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-12-22 08:38:28,188 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-12-22 08:38:28,594 WARN L197 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2020-12-22 08:38:28,779 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-12-22 08:38:29,142 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-12-22 08:38:29,311 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-22 08:38:29,709 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2020-12-22 08:38:29,920 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-12-22 08:38:30,739 WARN L197 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-12-22 08:38:30,906 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-22 08:38:31,930 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-12-22 08:38:32,102 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32 [2020-12-22 08:38:32,697 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-12-22 08:38:33,221 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2020-12-22 08:38:34,080 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-12-22 08:38:35,160 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-12-22 08:38:35,439 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-12-22 08:38:35,683 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-12-22 08:38:36,464 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2020-12-22 08:38:36,924 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-12-22 08:38:39,294 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2020-12-22 08:38:39,509 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-12-22 08:38:40,048 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-12-22 08:38:40,237 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-12-22 08:38:40,881 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2020-12-22 08:38:41,121 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-12-22 08:38:41,945 WARN L197 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-12-22 08:38:42,116 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-12-22 08:38:42,365 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2020-12-22 08:38:42,554 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-12-22 08:38:42,848 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2020-12-22 08:38:43,662 WARN L197 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 75 [2020-12-22 08:38:43,851 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-12-22 08:38:44,266 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-12-22 08:38:44,499 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-12-22 08:38:44,800 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2020-12-22 08:38:45,011 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-12-22 08:38:46,079 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-12-22 08:38:49,581 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2020-12-22 08:38:49,911 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-12-22 08:38:50,144 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2020-12-22 08:38:50,377 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-12-22 08:38:50,530 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 28 [2020-12-22 08:38:50,837 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2020-12-22 08:38:51,251 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-12-22 08:38:51,422 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2020-12-22 08:38:51,742 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2020-12-22 08:38:52,571 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35 [2020-12-22 08:38:54,264 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2020-12-22 08:38:55,134 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2020-12-22 08:38:55,317 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2020-12-22 08:38:56,647 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-12-22 08:38:57,155 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-12-22 08:38:57,588 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 28 [2020-12-22 08:38:57,996 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 28 [2020-12-22 08:38:58,311 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2020-12-22 08:38:59,052 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2020-12-22 08:38:59,531 WARN L197 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2020-12-22 08:38:59,778 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-12-22 08:39:00,132 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2020-12-22 08:39:00,758 WARN L197 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2020-12-22 08:39:01,010 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-12-22 08:39:01,287 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2020-12-22 08:39:01,682 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2020-12-22 08:39:02,227 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2020-12-22 08:39:02,476 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-12-22 08:39:02,716 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-12-22 08:39:03,320 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-12-22 08:39:07,496 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-12-22 08:39:07,765 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-12-22 08:39:11,040 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-12-22 08:39:11,771 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-12-22 08:39:12,408 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2020-12-22 08:39:13,349 WARN L197 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-12-22 08:39:13,692 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-12-22 08:39:14,532 WARN L197 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-12-22 08:39:18,499 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 44 [2020-12-22 08:39:19,389 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-12-22 08:39:23,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:39:23,241 INFO L93 Difference]: Finished difference Result 72283 states and 93214 transitions. [2020-12-22 08:39:23,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2020-12-22 08:39:23,248 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 100 [2020-12-22 08:39:23,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:39:23,328 INFO L225 Difference]: With dead ends: 72283 [2020-12-22 08:39:23,329 INFO L226 Difference]: Without dead ends: 58281 [2020-12-22 08:39:23,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14869 ImplicationChecksByTransitivity, 32.4s TimeCoverageRelationStatistics Valid=5556, Invalid=31500, Unknown=0, NotChecked=0, Total=37056 [2020-12-22 08:39:23,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58281 states. [2020-12-22 08:39:36,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58281 to 27251. [2020-12-22 08:39:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27251 states. [2020-12-22 08:39:36,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27251 states to 27251 states and 35799 transitions. [2020-12-22 08:39:36,993 INFO L78 Accepts]: Start accepts. Automaton has 27251 states and 35799 transitions. Word has length 100 [2020-12-22 08:39:36,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:39:36,993 INFO L481 AbstractCegarLoop]: Abstraction has 27251 states and 35799 transitions. [2020-12-22 08:39:36,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:39:36,994 INFO L276 IsEmpty]: Start isEmpty. Operand 27251 states and 35799 transitions. [2020-12-22 08:39:36,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 08:39:36,998 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:39:36,998 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:39:37,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-22 08:39:37,211 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:39:37,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:39:37,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1094222321, now seen corresponding path program 1 times [2020-12-22 08:39:37,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:39:37,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533241289] [2020-12-22 08:39:37,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:39:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:37,971 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:39:37,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533241289] [2020-12-22 08:39:37,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104183586] [2020-12-22 08:39:37,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:39:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:39:38,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 08:39:38,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:39:38,633 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 08:39:38,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:39:38,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5] total 19 [2020-12-22 08:39:38,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50268500] [2020-12-22 08:39:38,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:39:38,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:39:38,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:39:38,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:39:38,635 INFO L87 Difference]: Start difference. First operand 27251 states and 35799 transitions. Second operand 19 states. [2020-12-22 08:39:38,868 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-12-22 08:39:39,574 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-12-22 08:39:39,852 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-12-22 08:39:40,119 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-22 08:39:40,357 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-12-22 08:39:40,615 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-12-22 08:39:42,104 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-22 08:39:42,492 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-12-22 08:39:42,967 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-12-22 08:39:43,615 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2020-12-22 08:39:44,502 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-12-22 08:39:45,231 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-12-22 08:39:45,929 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-12-22 08:39:46,189 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2020-12-22 08:39:46,834 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2020-12-22 08:39:47,130 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2020-12-22 08:39:47,391 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-12-22 08:39:47,591 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-12-22 08:39:49,542 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-12-22 08:39:49,821 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-12-22 08:39:50,055 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-12-22 08:39:56,984 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-12-22 08:39:57,398 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-12-22 08:39:58,180 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-12-22 08:39:58,462 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-12-22 08:39:58,823 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-12-22 08:40:05,868 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-22 08:40:06,723 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-12-22 08:40:07,633 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-22 08:40:07,947 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-22 08:40:08,891 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-22 08:40:09,726 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-12-22 08:40:10,541 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-12-22 08:40:11,786 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-12-22 08:40:13,422 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-12-22 08:40:15,187 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-12-22 08:40:15,674 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-22 08:40:16,056 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-12-22 08:40:17,312 WARN L197 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-12-22 08:40:18,618 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-12-22 08:40:18,970 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39