/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/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 19:43:49,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 19:43:49,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 19:43:49,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 19:43:49,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 19:43:49,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 19:43:49,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 19:43:49,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 19:43:49,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 19:43:49,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 19:43:49,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 19:43:49,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 19:43:49,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 19:43:49,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 19:43:49,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 19:43:49,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 19:43:49,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 19:43:49,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 19:43:49,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 19:43:49,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 19:43:49,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 19:43:49,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 19:43:49,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 19:43:49,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 19:43:49,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 19:43:49,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 19:43:49,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 19:43:49,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 19:43:49,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 19:43:49,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 19:43:49,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 19:43:49,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 19:43:49,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 19:43:49,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 19:43:49,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 19:43:49,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 19:43:49,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 19:43:49,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 19:43:49,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 19:43:49,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 19:43:49,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 19:43:49,243 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 19:43:49,273 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 19:43:49,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 19:43:49,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 19:43:49,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 19:43:49,275 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 19:43:49,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 19:43:49,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 19:43:49,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 19:43:49,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 19:43:49,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 19:43:49,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 19:43:49,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 19:43:49,277 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 19:43:49,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 19:43:49,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 19:43:49,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 19:43:49,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 19:43:49,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:43:49,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 19:43:49,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 19:43:49,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 19:43:49,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 19:43:49,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 19:43:49,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 19:43:49,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 19:43:49,280 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 19:43:49,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 19:43:49,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 19:43:49,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 19:43:49,801 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 19:43:49,802 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 19:43:49,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c [2021-01-06 19:43:49,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ff6f86cf6/be6a77aa34594ed889913afafc43a9d3/FLAG21509fc9e [2021-01-06 19:43:50,582 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 19:43:50,583 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c [2021-01-06 19:43:50,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ff6f86cf6/be6a77aa34594ed889913afafc43a9d3/FLAG21509fc9e [2021-01-06 19:43:50,879 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ff6f86cf6/be6a77aa34594ed889913afafc43a9d3 [2021-01-06 19:43:50,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 19:43:50,886 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 19:43:50,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 19:43:50,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 19:43:50,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 19:43:50,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:43:50" (1/1) ... [2021-01-06 19:43:50,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a258e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:50, skipping insertion in model container [2021-01-06 19:43:50,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:43:50" (1/1) ... [2021-01-06 19:43:50,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 19:43:50,973 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2021-01-06 19:43:51,203 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c[9433,9446] [2021-01-06 19:43:51,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:43:51,236 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~alive4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2021-01-06 19:43:51,374 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c[9433,9446] [2021-01-06 19:43:51,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:43:51,413 INFO L208 MainTranslator]: Completed translation [2021-01-06 19:43:51,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:51 WrapperNode [2021-01-06 19:43:51,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 19:43:51,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 19:43:51,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 19:43:51,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 19:43:51,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:51" (1/1) ... [2021-01-06 19:43:51,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:51" (1/1) ... [2021-01-06 19:43:51,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 19:43:51,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 19:43:51,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 19:43:51,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 19:43:51,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:51" (1/1) ... [2021-01-06 19:43:51,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:51" (1/1) ... [2021-01-06 19:43:51,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:51" (1/1) ... [2021-01-06 19:43:51,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:51" (1/1) ... [2021-01-06 19:43:51,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:51" (1/1) ... [2021-01-06 19:43:51,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:51" (1/1) ... [2021-01-06 19:43:51,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:51" (1/1) ... [2021-01-06 19:43:51,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 19:43:51,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 19:43:51,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 19:43:51,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 19:43:51,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 19:43:51,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 19:43:51,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 19:43:51,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 19:43:51,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 19:43:52,683 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 19:43:52,686 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-01-06 19:43:52,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:43:52 BoogieIcfgContainer [2021-01-06 19:43:52,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 19:43:52,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 19:43:52,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 19:43:52,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 19:43:52,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 07:43:50" (1/3) ... [2021-01-06 19:43:52,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b56f5dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:43:52, skipping insertion in model container [2021-01-06 19:43:52,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:43:51" (2/3) ... [2021-01-06 19:43:52,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b56f5dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:43:52, skipping insertion in model container [2021-01-06 19:43:52,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:43:52" (3/3) ... [2021-01-06 19:43:52,715 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c [2021-01-06 19:43:52,731 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 19:43:52,737 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 19:43:52,758 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 19:43:52,795 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 19:43:52,795 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 19:43:52,795 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 19:43:52,796 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 19:43:52,796 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 19:43:52,796 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 19:43:52,796 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 19:43:52,796 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 19:43:52,815 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2021-01-06 19:43:52,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 19:43:52,824 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:52,824 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] [2021-01-06 19:43:52,825 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:52,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:52,832 INFO L82 PathProgramCache]: Analyzing trace with hash -2019613380, now seen corresponding path program 1 times [2021-01-06 19:43:52,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:52,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553683890] [2021-01-06 19:43:52,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:53,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:53,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553683890] [2021-01-06 19:43:53,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:53,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 19:43:53,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588135586] [2021-01-06 19:43:53,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 19:43:53,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:53,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 19:43:53,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 19:43:53,123 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 2 states. [2021-01-06 19:43:53,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:53,155 INFO L93 Difference]: Finished difference Result 171 states and 278 transitions. [2021-01-06 19:43:53,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 19:43:53,157 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2021-01-06 19:43:53,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:53,169 INFO L225 Difference]: With dead ends: 171 [2021-01-06 19:43:53,170 INFO L226 Difference]: Without dead ends: 96 [2021-01-06 19:43:53,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 19:43:53,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-01-06 19:43:53,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-01-06 19:43:53,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-01-06 19:43:53,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 159 transitions. [2021-01-06 19:43:53,222 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 159 transitions. Word has length 29 [2021-01-06 19:43:53,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:53,222 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 159 transitions. [2021-01-06 19:43:53,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 19:43:53,223 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 159 transitions. [2021-01-06 19:43:53,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 19:43:53,225 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:53,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:43:53,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 19:43:53,226 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:53,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:53,227 INFO L82 PathProgramCache]: Analyzing trace with hash 2141340410, now seen corresponding path program 1 times [2021-01-06 19:43:53,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:53,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459039479] [2021-01-06 19:43:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:53,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:53,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459039479] [2021-01-06 19:43:53,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:53,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:43:53,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702759104] [2021-01-06 19:43:53,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 19:43:53,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:53,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 19:43:53,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 19:43:53,383 INFO L87 Difference]: Start difference. First operand 96 states and 159 transitions. Second operand 5 states. [2021-01-06 19:43:53,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:53,510 INFO L93 Difference]: Finished difference Result 232 states and 373 transitions. [2021-01-06 19:43:53,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:43:53,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2021-01-06 19:43:53,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:53,514 INFO L225 Difference]: With dead ends: 232 [2021-01-06 19:43:53,514 INFO L226 Difference]: Without dead ends: 162 [2021-01-06 19:43:53,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:43:53,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-01-06 19:43:53,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 96. [2021-01-06 19:43:53,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-01-06 19:43:53,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 135 transitions. [2021-01-06 19:43:53,531 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 135 transitions. Word has length 29 [2021-01-06 19:43:53,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:53,531 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 135 transitions. [2021-01-06 19:43:53,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 19:43:53,531 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 135 transitions. [2021-01-06 19:43:53,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 19:43:53,534 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:53,534 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] [2021-01-06 19:43:53,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 19:43:53,534 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:53,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:53,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1164590349, now seen corresponding path program 1 times [2021-01-06 19:43:53,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:53,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17906850] [2021-01-06 19:43:53,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:53,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:53,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17906850] [2021-01-06 19:43:53,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:53,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:53,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972792142] [2021-01-06 19:43:53,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:53,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:53,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:53,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:53,704 INFO L87 Difference]: Start difference. First operand 96 states and 135 transitions. Second operand 3 states. [2021-01-06 19:43:53,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:53,758 INFO L93 Difference]: Finished difference Result 216 states and 325 transitions. [2021-01-06 19:43:53,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:53,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2021-01-06 19:43:53,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:53,765 INFO L225 Difference]: With dead ends: 216 [2021-01-06 19:43:53,765 INFO L226 Difference]: Without dead ends: 150 [2021-01-06 19:43:53,766 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 [2021-01-06 19:43:53,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-01-06 19:43:53,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2021-01-06 19:43:53,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2021-01-06 19:43:53,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 218 transitions. [2021-01-06 19:43:53,791 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 218 transitions. Word has length 52 [2021-01-06 19:43:53,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:53,792 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 218 transitions. [2021-01-06 19:43:53,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:53,792 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 218 transitions. [2021-01-06 19:43:53,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-06 19:43:53,794 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:53,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:43:53,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 19:43:53,795 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:53,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:53,796 INFO L82 PathProgramCache]: Analyzing trace with hash 502679627, now seen corresponding path program 1 times [2021-01-06 19:43:53,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:53,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354178513] [2021-01-06 19:43:53,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:53,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354178513] [2021-01-06 19:43:53,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:53,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:53,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785186892] [2021-01-06 19:43:53,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:53,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:53,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:53,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:53,896 INFO L87 Difference]: Start difference. First operand 148 states and 218 transitions. Second operand 3 states. [2021-01-06 19:43:53,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:53,951 INFO L93 Difference]: Finished difference Result 360 states and 554 transitions. [2021-01-06 19:43:53,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:53,956 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2021-01-06 19:43:53,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:53,962 INFO L225 Difference]: With dead ends: 360 [2021-01-06 19:43:53,963 INFO L226 Difference]: Without dead ends: 242 [2021-01-06 19:43:53,964 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 [2021-01-06 19:43:53,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-01-06 19:43:54,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 240. [2021-01-06 19:43:54,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2021-01-06 19:43:54,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 363 transitions. [2021-01-06 19:43:54,004 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 363 transitions. Word has length 53 [2021-01-06 19:43:54,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:54,005 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 363 transitions. [2021-01-06 19:43:54,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:54,005 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 363 transitions. [2021-01-06 19:43:54,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-06 19:43:54,007 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:54,008 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] [2021-01-06 19:43:54,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 19:43:54,008 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:54,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:54,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1405286019, now seen corresponding path program 1 times [2021-01-06 19:43:54,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:54,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366044475] [2021-01-06 19:43:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:54,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:54,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366044475] [2021-01-06 19:43:54,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:54,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:54,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201319842] [2021-01-06 19:43:54,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:54,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:54,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:54,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:54,135 INFO L87 Difference]: Start difference. First operand 240 states and 363 transitions. Second operand 3 states. [2021-01-06 19:43:54,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:54,193 INFO L93 Difference]: Finished difference Result 612 states and 949 transitions. [2021-01-06 19:43:54,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:54,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2021-01-06 19:43:54,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:54,198 INFO L225 Difference]: With dead ends: 612 [2021-01-06 19:43:54,198 INFO L226 Difference]: Without dead ends: 402 [2021-01-06 19:43:54,206 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 [2021-01-06 19:43:54,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-01-06 19:43:54,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 400. [2021-01-06 19:43:54,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2021-01-06 19:43:54,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 611 transitions. [2021-01-06 19:43:54,275 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 611 transitions. Word has length 54 [2021-01-06 19:43:54,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:54,275 INFO L481 AbstractCegarLoop]: Abstraction has 400 states and 611 transitions. [2021-01-06 19:43:54,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:54,275 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 611 transitions. [2021-01-06 19:43:54,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-01-06 19:43:54,277 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:54,278 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] [2021-01-06 19:43:54,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 19:43:54,278 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:54,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:54,279 INFO L82 PathProgramCache]: Analyzing trace with hash 417554395, now seen corresponding path program 1 times [2021-01-06 19:43:54,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:54,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125169595] [2021-01-06 19:43:54,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:54,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:54,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125169595] [2021-01-06 19:43:54,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:54,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:54,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106465924] [2021-01-06 19:43:54,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:54,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:54,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:54,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:54,376 INFO L87 Difference]: Start difference. First operand 400 states and 611 transitions. Second operand 3 states. [2021-01-06 19:43:54,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:54,443 INFO L93 Difference]: Finished difference Result 1044 states and 1613 transitions. [2021-01-06 19:43:54,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:54,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2021-01-06 19:43:54,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:54,449 INFO L225 Difference]: With dead ends: 1044 [2021-01-06 19:43:54,449 INFO L226 Difference]: Without dead ends: 674 [2021-01-06 19:43:54,450 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 [2021-01-06 19:43:54,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2021-01-06 19:43:54,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 672. [2021-01-06 19:43:54,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 672 states. [2021-01-06 19:43:54,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1023 transitions. [2021-01-06 19:43:54,513 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1023 transitions. Word has length 55 [2021-01-06 19:43:54,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:54,513 INFO L481 AbstractCegarLoop]: Abstraction has 672 states and 1023 transitions. [2021-01-06 19:43:54,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:54,514 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1023 transitions. [2021-01-06 19:43:54,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-06 19:43:54,516 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:54,516 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] [2021-01-06 19:43:54,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 19:43:54,516 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:54,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:54,522 INFO L82 PathProgramCache]: Analyzing trace with hash -368690669, now seen corresponding path program 1 times [2021-01-06 19:43:54,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:54,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9620926] [2021-01-06 19:43:54,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:54,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:54,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9620926] [2021-01-06 19:43:54,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:54,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 19:43:54,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625215420] [2021-01-06 19:43:54,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:43:54,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:54,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:43:54,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:43:54,737 INFO L87 Difference]: Start difference. First operand 672 states and 1023 transitions. Second operand 6 states. [2021-01-06 19:43:54,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:54,952 INFO L93 Difference]: Finished difference Result 2952 states and 4499 transitions. [2021-01-06 19:43:54,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:43:54,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2021-01-06 19:43:54,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:54,966 INFO L225 Difference]: With dead ends: 2952 [2021-01-06 19:43:54,967 INFO L226 Difference]: Without dead ends: 2310 [2021-01-06 19:43:54,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:43:54,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2021-01-06 19:43:55,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2304. [2021-01-06 19:43:55,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2304 states. [2021-01-06 19:43:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 3487 transitions. [2021-01-06 19:43:55,096 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 3487 transitions. Word has length 56 [2021-01-06 19:43:55,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:55,099 INFO L481 AbstractCegarLoop]: Abstraction has 2304 states and 3487 transitions. [2021-01-06 19:43:55,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:43:55,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 3487 transitions. [2021-01-06 19:43:55,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-06 19:43:55,105 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:55,105 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] [2021-01-06 19:43:55,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 19:43:55,106 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:55,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:55,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1031908864, now seen corresponding path program 1 times [2021-01-06 19:43:55,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:55,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130918592] [2021-01-06 19:43:55,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:55,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:55,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130918592] [2021-01-06 19:43:55,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:55,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 19:43:55,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541200805] [2021-01-06 19:43:55,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:43:55,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:55,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:43:55,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:43:55,269 INFO L87 Difference]: Start difference. First operand 2304 states and 3487 transitions. Second operand 6 states. [2021-01-06 19:43:55,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:55,722 INFO L93 Difference]: Finished difference Result 10426 states and 15844 transitions. [2021-01-06 19:43:55,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:43:55,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2021-01-06 19:43:55,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:55,772 INFO L225 Difference]: With dead ends: 10426 [2021-01-06 19:43:55,772 INFO L226 Difference]: Without dead ends: 8152 [2021-01-06 19:43:55,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:43:55,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8152 states. [2021-01-06 19:43:56,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8152 to 4576. [2021-01-06 19:43:56,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4576 states. [2021-01-06 19:43:56,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 6815 transitions. [2021-01-06 19:43:56,121 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 6815 transitions. Word has length 57 [2021-01-06 19:43:56,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:56,123 INFO L481 AbstractCegarLoop]: Abstraction has 4576 states and 6815 transitions. [2021-01-06 19:43:56,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:43:56,124 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 6815 transitions. [2021-01-06 19:43:56,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-01-06 19:43:56,125 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:56,125 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] [2021-01-06 19:43:56,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 19:43:56,127 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:56,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:56,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1541080392, now seen corresponding path program 1 times [2021-01-06 19:43:56,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:56,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234428851] [2021-01-06 19:43:56,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:56,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:56,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234428851] [2021-01-06 19:43:56,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:56,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 19:43:56,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659413411] [2021-01-06 19:43:56,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 19:43:56,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:56,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 19:43:56,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:43:56,316 INFO L87 Difference]: Start difference. First operand 4576 states and 6815 transitions. Second operand 8 states. [2021-01-06 19:43:57,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:57,002 INFO L93 Difference]: Finished difference Result 9634 states and 14112 transitions. [2021-01-06 19:43:57,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 19:43:57,002 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2021-01-06 19:43:57,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:57,051 INFO L225 Difference]: With dead ends: 9634 [2021-01-06 19:43:57,051 INFO L226 Difference]: Without dead ends: 9632 [2021-01-06 19:43:57,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-01-06 19:43:57,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9632 states. [2021-01-06 19:43:57,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9632 to 4960. [2021-01-06 19:43:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4960 states. [2021-01-06 19:43:57,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4960 states to 4960 states and 7199 transitions. [2021-01-06 19:43:57,453 INFO L78 Accepts]: Start accepts. Automaton has 4960 states and 7199 transitions. Word has length 58 [2021-01-06 19:43:57,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:57,453 INFO L481 AbstractCegarLoop]: Abstraction has 4960 states and 7199 transitions. [2021-01-06 19:43:57,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 19:43:57,454 INFO L276 IsEmpty]: Start isEmpty. Operand 4960 states and 7199 transitions. [2021-01-06 19:43:57,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-06 19:43:57,454 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:57,455 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] [2021-01-06 19:43:57,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 19:43:57,456 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:57,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:57,456 INFO L82 PathProgramCache]: Analyzing trace with hash 581430488, now seen corresponding path program 1 times [2021-01-06 19:43:57,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:57,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946444659] [2021-01-06 19:43:57,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:57,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:57,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946444659] [2021-01-06 19:43:57,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:43:57,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:43:57,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343999368] [2021-01-06 19:43:57,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:43:57,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:57,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:43:57,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:57,589 INFO L87 Difference]: Start difference. First operand 4960 states and 7199 transitions. Second operand 3 states. [2021-01-06 19:43:58,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:43:58,004 INFO L93 Difference]: Finished difference Result 11966 states and 17395 transitions. [2021-01-06 19:43:58,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:43:58,005 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2021-01-06 19:43:58,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:43:58,057 INFO L225 Difference]: With dead ends: 11966 [2021-01-06 19:43:58,058 INFO L226 Difference]: Without dead ends: 7036 [2021-01-06 19:43:58,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:43:58,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7036 states. [2021-01-06 19:43:58,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7036 to 7034. [2021-01-06 19:43:58,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7034 states. [2021-01-06 19:43:58,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7034 states to 7034 states and 10169 transitions. [2021-01-06 19:43:58,566 INFO L78 Accepts]: Start accepts. Automaton has 7034 states and 10169 transitions. Word has length 59 [2021-01-06 19:43:58,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:43:58,566 INFO L481 AbstractCegarLoop]: Abstraction has 7034 states and 10169 transitions. [2021-01-06 19:43:58,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:43:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 7034 states and 10169 transitions. [2021-01-06 19:43:58,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-01-06 19:43:58,572 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:43:58,573 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-06 19:43:58,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 19:43:58,573 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:43:58,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:43:58,574 INFO L82 PathProgramCache]: Analyzing trace with hash 418253800, now seen corresponding path program 1 times [2021-01-06 19:43:58,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:43:58,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304931846] [2021-01-06 19:43:58,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:43:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:58,851 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:43:58,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304931846] [2021-01-06 19:43:58,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425480607] [2021-01-06 19:43:58,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 19:43:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:43:59,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 12 conjunts are in the unsatisfiable core [2021-01-06 19:43:59,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:43:59,262 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:43:59,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:43:59,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 14 [2021-01-06 19:43:59,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765214174] [2021-01-06 19:43:59,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 19:43:59,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:43:59,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 19:43:59,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-01-06 19:43:59,265 INFO L87 Difference]: Start difference. First operand 7034 states and 10169 transitions. Second operand 14 states. [2021-01-06 19:44:07,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:07,601 INFO L93 Difference]: Finished difference Result 59660 states and 85311 transitions. [2021-01-06 19:44:07,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-01-06 19:44:07,602 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 82 [2021-01-06 19:44:07,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:07,813 INFO L225 Difference]: With dead ends: 59660 [2021-01-06 19:44:07,813 INFO L226 Difference]: Without dead ends: 52658 [2021-01-06 19:44:07,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2034 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1111, Invalid=4741, Unknown=0, NotChecked=0, Total=5852 [2021-01-06 19:44:07,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52658 states. [2021-01-06 19:44:09,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52658 to 25818. [2021-01-06 19:44:09,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25818 states. [2021-01-06 19:44:09,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25818 states to 25818 states and 36773 transitions. [2021-01-06 19:44:09,786 INFO L78 Accepts]: Start accepts. Automaton has 25818 states and 36773 transitions. Word has length 82 [2021-01-06 19:44:09,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:09,787 INFO L481 AbstractCegarLoop]: Abstraction has 25818 states and 36773 transitions. [2021-01-06 19:44:09,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 19:44:09,787 INFO L276 IsEmpty]: Start isEmpty. Operand 25818 states and 36773 transitions. [2021-01-06 19:44:09,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-01-06 19:44:09,796 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:09,797 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] [2021-01-06 19:44:10,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-06 19:44:10,005 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:10,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:10,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1918927774, now seen corresponding path program 1 times [2021-01-06 19:44:10,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:10,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56842573] [2021-01-06 19:44:10,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:10,072 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:10,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56842573] [2021-01-06 19:44:10,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:10,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:44:10,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026101523] [2021-01-06 19:44:10,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:44:10,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:10,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:44:10,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:10,075 INFO L87 Difference]: Start difference. First operand 25818 states and 36773 transitions. Second operand 3 states. [2021-01-06 19:44:11,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:11,947 INFO L93 Difference]: Finished difference Result 61578 states and 87635 transitions. [2021-01-06 19:44:11,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:44:11,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2021-01-06 19:44:11,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:12,016 INFO L225 Difference]: With dead ends: 61578 [2021-01-06 19:44:12,017 INFO L226 Difference]: Without dead ends: 40912 [2021-01-06 19:44:12,052 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 [2021-01-06 19:44:12,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40912 states. [2021-01-06 19:44:13,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40912 to 39254. [2021-01-06 19:44:13,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39254 states. [2021-01-06 19:44:14,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39254 states to 39254 states and 55297 transitions. [2021-01-06 19:44:14,044 INFO L78 Accepts]: Start accepts. Automaton has 39254 states and 55297 transitions. Word has length 83 [2021-01-06 19:44:14,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:14,044 INFO L481 AbstractCegarLoop]: Abstraction has 39254 states and 55297 transitions. [2021-01-06 19:44:14,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:44:14,044 INFO L276 IsEmpty]: Start isEmpty. Operand 39254 states and 55297 transitions. [2021-01-06 19:44:14,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-01-06 19:44:14,057 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:14,057 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] [2021-01-06 19:44:14,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 19:44:14,058 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:14,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:14,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1917030416, now seen corresponding path program 1 times [2021-01-06 19:44:14,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:14,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587599854] [2021-01-06 19:44:14,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-01-06 19:44:14,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587599854] [2021-01-06 19:44:14,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:14,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 19:44:14,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005124718] [2021-01-06 19:44:14,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:44:14,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:14,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:44:14,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:44:14,138 INFO L87 Difference]: Start difference. First operand 39254 states and 55297 transitions. Second operand 6 states. [2021-01-06 19:44:17,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:17,152 INFO L93 Difference]: Finished difference Result 98610 states and 139239 transitions. [2021-01-06 19:44:17,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:44:17,152 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2021-01-06 19:44:17,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:17,241 INFO L225 Difference]: With dead ends: 98610 [2021-01-06 19:44:17,242 INFO L226 Difference]: Without dead ends: 59395 [2021-01-06 19:44:17,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 19:44:17,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59395 states. [2021-01-06 19:44:20,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59395 to 51553. [2021-01-06 19:44:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51553 states. [2021-01-06 19:44:20,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51553 states to 51553 states and 71626 transitions. [2021-01-06 19:44:20,382 INFO L78 Accepts]: Start accepts. Automaton has 51553 states and 71626 transitions. Word has length 83 [2021-01-06 19:44:20,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:20,382 INFO L481 AbstractCegarLoop]: Abstraction has 51553 states and 71626 transitions. [2021-01-06 19:44:20,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:44:20,383 INFO L276 IsEmpty]: Start isEmpty. Operand 51553 states and 71626 transitions. [2021-01-06 19:44:20,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-01-06 19:44:20,396 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:20,396 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] [2021-01-06 19:44:20,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 19:44:20,397 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:20,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:20,397 INFO L82 PathProgramCache]: Analyzing trace with hash 396113720, now seen corresponding path program 1 times [2021-01-06 19:44:20,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:20,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845509308] [2021-01-06 19:44:20,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:20,448 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:20,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845509308] [2021-01-06 19:44:20,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:20,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:44:20,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901098947] [2021-01-06 19:44:20,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:44:20,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:20,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:44:20,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:20,451 INFO L87 Difference]: Start difference. First operand 51553 states and 71626 transitions. Second operand 3 states. [2021-01-06 19:44:24,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:24,230 INFO L93 Difference]: Finished difference Result 123837 states and 172228 transitions. [2021-01-06 19:44:24,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:44:24,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2021-01-06 19:44:24,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:24,353 INFO L225 Difference]: With dead ends: 123837 [2021-01-06 19:44:24,354 INFO L226 Difference]: Without dead ends: 78723 [2021-01-06 19:44:24,398 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 [2021-01-06 19:44:24,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78723 states. [2021-01-06 19:44:28,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78723 to 69845. [2021-01-06 19:44:28,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69845 states. [2021-01-06 19:44:28,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69845 states to 69845 states and 96374 transitions. [2021-01-06 19:44:28,241 INFO L78 Accepts]: Start accepts. Automaton has 69845 states and 96374 transitions. Word has length 83 [2021-01-06 19:44:28,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:28,241 INFO L481 AbstractCegarLoop]: Abstraction has 69845 states and 96374 transitions. [2021-01-06 19:44:28,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:44:28,241 INFO L276 IsEmpty]: Start isEmpty. Operand 69845 states and 96374 transitions. [2021-01-06 19:44:28,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-01-06 19:44:28,261 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:28,261 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] [2021-01-06 19:44:28,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 19:44:28,261 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:28,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:28,262 INFO L82 PathProgramCache]: Analyzing trace with hash -679069464, now seen corresponding path program 1 times [2021-01-06 19:44:28,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:28,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093814344] [2021-01-06 19:44:28,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:28,515 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-01-06 19:44:28,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093814344] [2021-01-06 19:44:28,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:28,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 19:44:28,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22180376] [2021-01-06 19:44:28,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:44:28,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:28,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:44:28,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:44:28,517 INFO L87 Difference]: Start difference. First operand 69845 states and 96374 transitions. Second operand 6 states. [2021-01-06 19:44:34,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:34,279 INFO L93 Difference]: Finished difference Result 141995 states and 197431 transitions. [2021-01-06 19:44:34,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:44:34,280 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2021-01-06 19:44:34,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:34,637 INFO L225 Difference]: With dead ends: 141995 [2021-01-06 19:44:34,637 INFO L226 Difference]: Without dead ends: 128553 [2021-01-06 19:44:34,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:44:34,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128553 states. [2021-01-06 19:44:39,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128553 to 82709. [2021-01-06 19:44:39,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82709 states. [2021-01-06 19:44:39,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82709 states to 82709 states and 113974 transitions. [2021-01-06 19:44:39,354 INFO L78 Accepts]: Start accepts. Automaton has 82709 states and 113974 transitions. Word has length 83 [2021-01-06 19:44:39,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:39,354 INFO L481 AbstractCegarLoop]: Abstraction has 82709 states and 113974 transitions. [2021-01-06 19:44:39,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:44:39,354 INFO L276 IsEmpty]: Start isEmpty. Operand 82709 states and 113974 transitions. [2021-01-06 19:44:39,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-01-06 19:44:39,374 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:39,374 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] [2021-01-06 19:44:39,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 19:44:39,375 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:39,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:39,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1106415528, now seen corresponding path program 1 times [2021-01-06 19:44:39,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:39,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630113210] [2021-01-06 19:44:39,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:44:39,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630113210] [2021-01-06 19:44:39,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:39,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:44:39,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693964742] [2021-01-06 19:44:39,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:44:39,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:39,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:44:39,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:44:39,430 INFO L87 Difference]: Start difference. First operand 82709 states and 113974 transitions. Second operand 3 states. [2021-01-06 19:44:45,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:44:45,400 INFO L93 Difference]: Finished difference Result 189795 states and 259787 transitions. [2021-01-06 19:44:45,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:44:45,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2021-01-06 19:44:45,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:44:45,581 INFO L225 Difference]: With dead ends: 189795 [2021-01-06 19:44:45,582 INFO L226 Difference]: Without dead ends: 125729 [2021-01-06 19:44:45,633 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 [2021-01-06 19:44:45,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125729 states. [2021-01-06 19:44:51,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125729 to 120867. [2021-01-06 19:44:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120867 states. [2021-01-06 19:44:52,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120867 states to 120867 states and 163701 transitions. [2021-01-06 19:44:52,397 INFO L78 Accepts]: Start accepts. Automaton has 120867 states and 163701 transitions. Word has length 83 [2021-01-06 19:44:52,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:44:52,398 INFO L481 AbstractCegarLoop]: Abstraction has 120867 states and 163701 transitions. [2021-01-06 19:44:52,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 19:44:52,398 INFO L276 IsEmpty]: Start isEmpty. Operand 120867 states and 163701 transitions. [2021-01-06 19:44:52,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-01-06 19:44:52,411 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:44:52,412 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] [2021-01-06 19:44:52,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 19:44:52,412 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:44:52,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:44:52,413 INFO L82 PathProgramCache]: Analyzing trace with hash 576343346, now seen corresponding path program 1 times [2021-01-06 19:44:52,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:44:52,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552988057] [2021-01-06 19:44:52,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:44:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:44:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-06 19:44:52,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552988057] [2021-01-06 19:44:52,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:44:52,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 19:44:52,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818786192] [2021-01-06 19:44:52,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:44:52,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:44:52,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:44:52,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:44:52,509 INFO L87 Difference]: Start difference. First operand 120867 states and 163701 transitions. Second operand 6 states. [2021-01-06 19:45:03,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:45:03,062 INFO L93 Difference]: Finished difference Result 249219 states and 340620 transitions. [2021-01-06 19:45:03,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:45:03,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2021-01-06 19:45:03,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:45:03,443 INFO L225 Difference]: With dead ends: 249219 [2021-01-06 19:45:03,444 INFO L226 Difference]: Without dead ends: 210833 [2021-01-06 19:45:03,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 19:45:03,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210833 states. [2021-01-06 19:45:12,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210833 to 157523. [2021-01-06 19:45:12,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157523 states. [2021-01-06 19:45:12,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157523 states to 157523 states and 213157 transitions. [2021-01-06 19:45:12,704 INFO L78 Accepts]: Start accepts. Automaton has 157523 states and 213157 transitions. Word has length 83 [2021-01-06 19:45:12,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:45:12,705 INFO L481 AbstractCegarLoop]: Abstraction has 157523 states and 213157 transitions. [2021-01-06 19:45:12,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:45:12,705 INFO L276 IsEmpty]: Start isEmpty. Operand 157523 states and 213157 transitions. [2021-01-06 19:45:12,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-01-06 19:45:12,723 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:45:12,723 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] [2021-01-06 19:45:12,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 19:45:12,723 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:45:12,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:45:12,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1007327224, now seen corresponding path program 1 times [2021-01-06 19:45:12,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:45:12,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808939016] [2021-01-06 19:45:12,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:45:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:45:13,072 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 19:45:13,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808939016] [2021-01-06 19:45:13,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:45:13,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 19:45:13,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122988066] [2021-01-06 19:45:13,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:45:13,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:45:13,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:45:13,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:45:13,077 INFO L87 Difference]: Start difference. First operand 157523 states and 213157 transitions. Second operand 6 states. [2021-01-06 19:45:26,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:45:26,039 INFO L93 Difference]: Finished difference Result 292923 states and 399976 transitions. [2021-01-06 19:45:26,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:45:26,040 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2021-01-06 19:45:26,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:45:26,463 INFO L225 Difference]: With dead ends: 292923 [2021-01-06 19:45:26,463 INFO L226 Difference]: Without dead ends: 247201 [2021-01-06 19:45:26,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 19:45:26,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247201 states. [2021-01-06 19:45:37,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247201 to 192281. [2021-01-06 19:45:37,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192281 states. [2021-01-06 19:45:38,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192281 states to 192281 states and 260487 transitions. [2021-01-06 19:45:38,271 INFO L78 Accepts]: Start accepts. Automaton has 192281 states and 260487 transitions. Word has length 83 [2021-01-06 19:45:38,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:45:38,272 INFO L481 AbstractCegarLoop]: Abstraction has 192281 states and 260487 transitions. [2021-01-06 19:45:38,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:45:38,272 INFO L276 IsEmpty]: Start isEmpty. Operand 192281 states and 260487 transitions. [2021-01-06 19:45:38,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-01-06 19:45:38,289 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:45:38,289 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] [2021-01-06 19:45:38,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-06 19:45:38,289 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:45:38,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:45:38,290 INFO L82 PathProgramCache]: Analyzing trace with hash -548102794, now seen corresponding path program 1 times [2021-01-06 19:45:38,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:45:38,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326239291] [2021-01-06 19:45:38,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:45:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:45:38,402 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:45:38,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326239291] [2021-01-06 19:45:38,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:45:38,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 19:45:38,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241195241] [2021-01-06 19:45:38,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:45:38,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:45:38,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:45:38,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:45:38,405 INFO L87 Difference]: Start difference. First operand 192281 states and 260487 transitions. Second operand 6 states. [2021-01-06 19:45:53,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:45:53,622 INFO L93 Difference]: Finished difference Result 303039 states and 413638 transitions. [2021-01-06 19:45:53,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:45:53,623 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2021-01-06 19:45:53,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:45:54,104 INFO L225 Difference]: With dead ends: 303039 [2021-01-06 19:45:54,104 INFO L226 Difference]: Without dead ends: 274297 [2021-01-06 19:45:54,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 19:45:54,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274297 states. [2021-01-06 19:46:07,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274297 to 213267. [2021-01-06 19:46:07,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213267 states. [2021-01-06 19:46:08,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213267 states to 213267 states and 289331 transitions. [2021-01-06 19:46:08,143 INFO L78 Accepts]: Start accepts. Automaton has 213267 states and 289331 transitions. Word has length 84 [2021-01-06 19:46:08,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:46:08,143 INFO L481 AbstractCegarLoop]: Abstraction has 213267 states and 289331 transitions. [2021-01-06 19:46:08,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:46:08,144 INFO L276 IsEmpty]: Start isEmpty. Operand 213267 states and 289331 transitions. [2021-01-06 19:46:08,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-01-06 19:46:08,165 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:46:08,165 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] [2021-01-06 19:46:08,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-06 19:46:08,166 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:46:08,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:46:08,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1864221152, now seen corresponding path program 1 times [2021-01-06 19:46:08,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:46:08,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288247748] [2021-01-06 19:46:08,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:46:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:46:08,217 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:46:08,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288247748] [2021-01-06 19:46:08,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:46:08,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 19:46:08,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261865301] [2021-01-06 19:46:08,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 19:46:08,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:46:08,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 19:46:08,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 19:46:08,219 INFO L87 Difference]: Start difference. First operand 213267 states and 289331 transitions. Second operand 3 states. [2021-01-06 19:46:22,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:46:22,460 INFO L93 Difference]: Finished difference Result 371927 states and 501056 transitions. [2021-01-06 19:46:22,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 19:46:22,461 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2021-01-06 19:46:22,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:46:23,329 INFO L225 Difference]: With dead ends: 371927 [2021-01-06 19:46:23,330 INFO L226 Difference]: Without dead ends: 220660 [2021-01-06 19:46:23,572 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 [2021-01-06 19:46:23,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220660 states.