/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_floodmax.3.2.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:40:45,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:40:45,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:40:45,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:40:45,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:40:45,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:40:45,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:40:45,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:40:45,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:40:45,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:40:45,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:40:45,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:40:45,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:40:45,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:40:45,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:40:45,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:40:45,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:40:45,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:40:45,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:40:45,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:40:45,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:40:45,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:40:45,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:40:45,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:40:45,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:40:45,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:40:45,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:40:45,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:40:45,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:40:45,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:40:45,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:40:45,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:40:45,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:40:45,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:40:45,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:40:45,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:40:45,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:40:45,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:40:45,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:40:45,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:40:45,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:40:45,405 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 09:40:45,449 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:40:45,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:40:45,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:40:45,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:40:45,454 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:40:45,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:40:45,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:40:45,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:40:45,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:40:45,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:40:45,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:40:45,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:40:45,457 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:40:45,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:40:45,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:40:45,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:40:45,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:40:45,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:40:45,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:40:45,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:40:45,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:40:45,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:40:45,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:40:45,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:40:45,460 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:40:45,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:40:45,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:40:45,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:40:45,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:40:45,917 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:40:45,917 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:40:45,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c [2020-12-23 09:40:46,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1fd1a68b0/39eac3ebccb64f989e4d4e2acb53890e/FLAG1b3b8a917 [2020-12-23 09:40:46,760 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:40:46,760 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c [2020-12-23 09:40:46,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1fd1a68b0/39eac3ebccb64f989e4d4e2acb53890e/FLAG1b3b8a917 [2020-12-23 09:40:47,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/1fd1a68b0/39eac3ebccb64f989e4d4e2acb53890e [2020-12-23 09:40:47,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:40:47,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:40:47,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:40:47,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:40:47,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:40:47,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:40:47" (1/1) ... [2020-12-23 09:40:47,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14cbbbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:47, skipping insertion in model container [2020-12-23 09:40:47,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:40:47" (1/1) ... [2020-12-23 09:40:47,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:40:47,146 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r121~0,] left hand side expression in assignment: lhs: VariableLHS[~r131~0,] left hand side expression in assignment: lhs: VariableLHS[~r211~0,] left hand side expression in assignment: lhs: VariableLHS[~r231~0,] left hand side expression in assignment: lhs: VariableLHS[~r311~0,] left hand side expression in assignment: lhs: VariableLHS[~r321~0,] 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[~r122~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~r132~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~r212~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~r232~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~r312~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~r322~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] 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[~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[~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[~ep12~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep13~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep21~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep23~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep31~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep32~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:40:47,451 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_floodmax.3.2.ufo.BOUNDED-6.pals.c[12764,12777] [2020-12-23 09:40:47,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:40:47,470 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r121~0,] left hand side expression in assignment: lhs: VariableLHS[~r131~0,] left hand side expression in assignment: lhs: VariableLHS[~r211~0,] left hand side expression in assignment: lhs: VariableLHS[~r231~0,] left hand side expression in assignment: lhs: VariableLHS[~r311~0,] left hand side expression in assignment: lhs: VariableLHS[~r321~0,] 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[~r122~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~r132~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~r212~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~r232~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~r312~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~r322~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] 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[~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[~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[~ep12~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep13~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep21~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep23~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep31~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep32~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:40:47,547 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_floodmax.3.2.ufo.BOUNDED-6.pals.c[12764,12777] [2020-12-23 09:40:47,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:40:47,576 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:40:47,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:47 WrapperNode [2020-12-23 09:40:47,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:40:47,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:40:47,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:40:47,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:40:47,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:47" (1/1) ... [2020-12-23 09:40:47,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:47" (1/1) ... [2020-12-23 09:40:47,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:40:47,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:40:47,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:40:47,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:40:47,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:47" (1/1) ... [2020-12-23 09:40:47,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:47" (1/1) ... [2020-12-23 09:40:47,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:47" (1/1) ... [2020-12-23 09:40:47,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:47" (1/1) ... [2020-12-23 09:40:47,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:47" (1/1) ... [2020-12-23 09:40:47,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:47" (1/1) ... [2020-12-23 09:40:47,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:47" (1/1) ... [2020-12-23 09:40:47,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:40:47,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:40:47,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:40:47,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:40:47,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:47" (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 [2020-12-23 09:40:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:40:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:40:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:40:47,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:40:48,888 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:40:48,889 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-23 09:40:48,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:40:48 BoogieIcfgContainer [2020-12-23 09:40:48,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:40:48,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:40:48,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:40:48,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:40:48,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:40:47" (1/3) ... [2020-12-23 09:40:48,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c770507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:40:48, skipping insertion in model container [2020-12-23 09:40:48,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:47" (2/3) ... [2020-12-23 09:40:48,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c770507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:40:48, skipping insertion in model container [2020-12-23 09:40:48,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:40:48" (3/3) ... [2020-12-23 09:40:48,900 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c [2020-12-23 09:40:48,907 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:40:48,912 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 09:40:48,931 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 09:40:48,959 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:40:48,960 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:40:48,960 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:40:48,960 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:40:48,960 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:40:48,960 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:40:48,960 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:40:48,961 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:40:48,980 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2020-12-23 09:40:48,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 09:40:48,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:48,991 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] [2020-12-23 09:40:48,992 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:48,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:48,999 INFO L82 PathProgramCache]: Analyzing trace with hash -306716250, now seen corresponding path program 1 times [2020-12-23 09:40:49,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:49,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704442023] [2020-12-23 09:40:49,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:49,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704442023] [2020-12-23 09:40:49,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:49,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:40:49,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917187277] [2020-12-23 09:40:49,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 09:40:49,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:49,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 09:40:49,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 09:40:49,295 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 2 states. [2020-12-23 09:40:49,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:49,332 INFO L93 Difference]: Finished difference Result 206 states and 352 transitions. [2020-12-23 09:40:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 09:40:49,334 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2020-12-23 09:40:49,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:49,350 INFO L225 Difference]: With dead ends: 206 [2020-12-23 09:40:49,350 INFO L226 Difference]: Without dead ends: 127 [2020-12-23 09:40:49,354 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 [2020-12-23 09:40:49,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-23 09:40:49,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2020-12-23 09:40:49,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-23 09:40:49,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 220 transitions. [2020-12-23 09:40:49,425 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 220 transitions. Word has length 37 [2020-12-23 09:40:49,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:49,425 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 220 transitions. [2020-12-23 09:40:49,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 09:40:49,426 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 220 transitions. [2020-12-23 09:40:49,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 09:40:49,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:49,428 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] [2020-12-23 09:40:49,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:40:49,429 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:49,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:49,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1124364700, now seen corresponding path program 1 times [2020-12-23 09:40:49,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:49,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924048121] [2020-12-23 09:40:49,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:49,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:49,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924048121] [2020-12-23 09:40:49,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:49,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:40:49,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526475833] [2020-12-23 09:40:49,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:40:49,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:49,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:40:49,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:40:49,583 INFO L87 Difference]: Start difference. First operand 127 states and 220 transitions. Second operand 5 states. [2020-12-23 09:40:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:49,747 INFO L93 Difference]: Finished difference Result 271 states and 460 transitions. [2020-12-23 09:40:49,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:40:49,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-12-23 09:40:49,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:49,750 INFO L225 Difference]: With dead ends: 271 [2020-12-23 09:40:49,750 INFO L226 Difference]: Without dead ends: 197 [2020-12-23 09:40:49,752 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 [2020-12-23 09:40:49,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-23 09:40:49,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 127. [2020-12-23 09:40:49,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-23 09:40:49,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 193 transitions. [2020-12-23 09:40:49,767 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 193 transitions. Word has length 37 [2020-12-23 09:40:49,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:49,767 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 193 transitions. [2020-12-23 09:40:49,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:40:49,767 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 193 transitions. [2020-12-23 09:40:49,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 09:40:49,770 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:49,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:49,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:40:49,771 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:49,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:49,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1313145683, now seen corresponding path program 1 times [2020-12-23 09:40:49,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:49,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915949744] [2020-12-23 09:40:49,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:49,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:49,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915949744] [2020-12-23 09:40:49,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:49,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:40:49,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645075341] [2020-12-23 09:40:49,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:40:49,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:49,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:40:49,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:49,991 INFO L87 Difference]: Start difference. First operand 127 states and 193 transitions. Second operand 3 states. [2020-12-23 09:40:50,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:50,070 INFO L93 Difference]: Finished difference Result 258 states and 412 transitions. [2020-12-23 09:40:50,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:40:50,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-23 09:40:50,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:50,073 INFO L225 Difference]: With dead ends: 258 [2020-12-23 09:40:50,073 INFO L226 Difference]: Without dead ends: 188 [2020-12-23 09:40:50,074 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 [2020-12-23 09:40:50,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-12-23 09:40:50,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2020-12-23 09:40:50,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-12-23 09:40:50,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 288 transitions. [2020-12-23 09:40:50,091 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 288 transitions. Word has length 63 [2020-12-23 09:40:50,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:50,092 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 288 transitions. [2020-12-23 09:40:50,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:40:50,092 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 288 transitions. [2020-12-23 09:40:50,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 09:40:50,095 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:50,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:50,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:40:50,096 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:50,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:50,097 INFO L82 PathProgramCache]: Analyzing trace with hash -255493166, now seen corresponding path program 1 times [2020-12-23 09:40:50,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:50,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277950701] [2020-12-23 09:40:50,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:50,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:50,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277950701] [2020-12-23 09:40:50,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:50,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:40:50,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061502641] [2020-12-23 09:40:50,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:40:50,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:50,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:40:50,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:50,220 INFO L87 Difference]: Start difference. First operand 186 states and 288 transitions. Second operand 3 states. [2020-12-23 09:40:50,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:50,258 INFO L93 Difference]: Finished difference Result 313 states and 501 transitions. [2020-12-23 09:40:50,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:40:50,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-23 09:40:50,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:50,262 INFO L225 Difference]: With dead ends: 313 [2020-12-23 09:40:50,262 INFO L226 Difference]: Without dead ends: 243 [2020-12-23 09:40:50,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:50,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-12-23 09:40:50,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2020-12-23 09:40:50,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-12-23 09:40:50,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 380 transitions. [2020-12-23 09:40:50,288 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 380 transitions. Word has length 65 [2020-12-23 09:40:50,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:50,288 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 380 transitions. [2020-12-23 09:40:50,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:40:50,288 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 380 transitions. [2020-12-23 09:40:50,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 09:40:50,291 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:50,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:50,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:40:50,292 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:50,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:50,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1395779292, now seen corresponding path program 1 times [2020-12-23 09:40:50,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:50,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199043376] [2020-12-23 09:40:50,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:50,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:50,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199043376] [2020-12-23 09:40:50,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:50,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:40:50,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068407008] [2020-12-23 09:40:50,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:40:50,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:50,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:40:50,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:50,378 INFO L87 Difference]: Start difference. First operand 241 states and 380 transitions. Second operand 3 states. [2020-12-23 09:40:50,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:50,411 INFO L93 Difference]: Finished difference Result 584 states and 947 transitions. [2020-12-23 09:40:50,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:40:50,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-23 09:40:50,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:50,415 INFO L225 Difference]: With dead ends: 584 [2020-12-23 09:40:50,416 INFO L226 Difference]: Without dead ends: 402 [2020-12-23 09:40:50,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:50,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-12-23 09:40:50,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 400. [2020-12-23 09:40:50,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-12-23 09:40:50,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 640 transitions. [2020-12-23 09:40:50,447 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 640 transitions. Word has length 65 [2020-12-23 09:40:50,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:50,447 INFO L481 AbstractCegarLoop]: Abstraction has 400 states and 640 transitions. [2020-12-23 09:40:50,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:40:50,447 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 640 transitions. [2020-12-23 09:40:50,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:40:50,450 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:50,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:50,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:40:50,451 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:50,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:50,456 INFO L82 PathProgramCache]: Analyzing trace with hash -812427391, now seen corresponding path program 1 times [2020-12-23 09:40:50,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:50,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813081458] [2020-12-23 09:40:50,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:50,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813081458] [2020-12-23 09:40:50,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:50,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:40:50,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831066418] [2020-12-23 09:40:50,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:40:50,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:50,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:40:50,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:50,562 INFO L87 Difference]: Start difference. First operand 400 states and 640 transitions. Second operand 3 states. [2020-12-23 09:40:50,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:50,599 INFO L93 Difference]: Finished difference Result 729 states and 1183 transitions. [2020-12-23 09:40:50,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:40:50,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-23 09:40:50,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:50,605 INFO L225 Difference]: With dead ends: 729 [2020-12-23 09:40:50,606 INFO L226 Difference]: Without dead ends: 547 [2020-12-23 09:40:50,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:50,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2020-12-23 09:40:50,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 545. [2020-12-23 09:40:50,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-12-23 09:40:50,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 875 transitions. [2020-12-23 09:40:50,639 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 875 transitions. Word has length 67 [2020-12-23 09:40:50,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:50,640 INFO L481 AbstractCegarLoop]: Abstraction has 545 states and 875 transitions. [2020-12-23 09:40:50,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:40:50,640 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 875 transitions. [2020-12-23 09:40:50,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:40:50,643 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:50,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:50,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:40:50,643 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:50,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:50,644 INFO L82 PathProgramCache]: Analyzing trace with hash 221435787, now seen corresponding path program 1 times [2020-12-23 09:40:50,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:50,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228230286] [2020-12-23 09:40:50,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:50,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:50,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228230286] [2020-12-23 09:40:50,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:50,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:40:50,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426903395] [2020-12-23 09:40:50,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:40:50,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:50,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:40:50,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:50,794 INFO L87 Difference]: Start difference. First operand 545 states and 875 transitions. Second operand 3 states. [2020-12-23 09:40:50,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:50,854 INFO L93 Difference]: Finished difference Result 1434 states and 2326 transitions. [2020-12-23 09:40:50,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:40:50,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-23 09:40:50,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:50,862 INFO L225 Difference]: With dead ends: 1434 [2020-12-23 09:40:50,862 INFO L226 Difference]: Without dead ends: 958 [2020-12-23 09:40:50,864 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 [2020-12-23 09:40:50,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2020-12-23 09:40:50,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 956. [2020-12-23 09:40:50,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 956 states. [2020-12-23 09:40:50,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1532 transitions. [2020-12-23 09:40:50,909 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1532 transitions. Word has length 67 [2020-12-23 09:40:50,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:50,911 INFO L481 AbstractCegarLoop]: Abstraction has 956 states and 1532 transitions. [2020-12-23 09:40:50,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:40:50,911 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1532 transitions. [2020-12-23 09:40:50,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 09:40:50,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:50,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:50,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:40:50,918 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:50,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:50,918 INFO L82 PathProgramCache]: Analyzing trace with hash 664156592, now seen corresponding path program 1 times [2020-12-23 09:40:50,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:50,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227997676] [2020-12-23 09:40:50,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:51,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:51,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227997676] [2020-12-23 09:40:51,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:51,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:40:51,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213604109] [2020-12-23 09:40:51,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:40:51,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:51,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:40:51,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:51,017 INFO L87 Difference]: Start difference. First operand 956 states and 1532 transitions. Second operand 3 states. [2020-12-23 09:40:51,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:51,070 INFO L93 Difference]: Finished difference Result 1783 states and 2881 transitions. [2020-12-23 09:40:51,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:40:51,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-23 09:40:51,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:51,078 INFO L225 Difference]: With dead ends: 1783 [2020-12-23 09:40:51,078 INFO L226 Difference]: Without dead ends: 1307 [2020-12-23 09:40:51,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:51,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2020-12-23 09:40:51,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1305. [2020-12-23 09:40:51,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-12-23 09:40:51,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 2086 transitions. [2020-12-23 09:40:51,130 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 2086 transitions. Word has length 69 [2020-12-23 09:40:51,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:51,130 INFO L481 AbstractCegarLoop]: Abstraction has 1305 states and 2086 transitions. [2020-12-23 09:40:51,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:40:51,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 2086 transitions. [2020-12-23 09:40:51,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 09:40:51,134 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:51,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:51,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:40:51,135 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:51,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:51,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1757720902, now seen corresponding path program 1 times [2020-12-23 09:40:51,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:51,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063265206] [2020-12-23 09:40:51,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:51,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063265206] [2020-12-23 09:40:51,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:51,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:40:51,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884840371] [2020-12-23 09:40:51,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:40:51,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:51,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:40:51,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:40:51,337 INFO L87 Difference]: Start difference. First operand 1305 states and 2086 transitions. Second operand 5 states. [2020-12-23 09:40:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:51,641 INFO L93 Difference]: Finished difference Result 6582 states and 10723 transitions. [2020-12-23 09:40:51,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:40:51,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-23 09:40:51,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:51,673 INFO L225 Difference]: With dead ends: 6582 [2020-12-23 09:40:51,674 INFO L226 Difference]: Without dead ends: 5356 [2020-12-23 09:40:51,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:40:51,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5356 states. [2020-12-23 09:40:51,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5356 to 2452. [2020-12-23 09:40:51,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2452 states. [2020-12-23 09:40:51,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3914 transitions. [2020-12-23 09:40:51,851 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3914 transitions. Word has length 69 [2020-12-23 09:40:51,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:51,851 INFO L481 AbstractCegarLoop]: Abstraction has 2452 states and 3914 transitions. [2020-12-23 09:40:51,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:40:51,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3914 transitions. [2020-12-23 09:40:51,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 09:40:51,852 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:51,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:51,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:40:51,853 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:51,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:51,854 INFO L82 PathProgramCache]: Analyzing trace with hash -577605759, now seen corresponding path program 1 times [2020-12-23 09:40:51,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:51,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941107085] [2020-12-23 09:40:51,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:51,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:51,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941107085] [2020-12-23 09:40:51,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:51,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:40:51,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550513575] [2020-12-23 09:40:51,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:40:51,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:51,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:40:51,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:40:51,931 INFO L87 Difference]: Start difference. First operand 2452 states and 3914 transitions. Second operand 4 states. [2020-12-23 09:40:52,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:52,196 INFO L93 Difference]: Finished difference Result 7943 states and 12835 transitions. [2020-12-23 09:40:52,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:40:52,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-12-23 09:40:52,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:52,230 INFO L225 Difference]: With dead ends: 7943 [2020-12-23 09:40:52,230 INFO L226 Difference]: Without dead ends: 5570 [2020-12-23 09:40:52,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:40:52,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states. [2020-12-23 09:40:52,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 3992. [2020-12-23 09:40:52,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3992 states. [2020-12-23 09:40:52,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 6384 transitions. [2020-12-23 09:40:52,481 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 6384 transitions. Word has length 70 [2020-12-23 09:40:52,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:52,481 INFO L481 AbstractCegarLoop]: Abstraction has 3992 states and 6384 transitions. [2020-12-23 09:40:52,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:40:52,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 6384 transitions. [2020-12-23 09:40:52,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 09:40:52,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:52,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:52,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:40:52,483 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:52,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:52,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1815229649, now seen corresponding path program 1 times [2020-12-23 09:40:52,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:52,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56727656] [2020-12-23 09:40:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:52,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:52,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56727656] [2020-12-23 09:40:52,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:52,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:40:52,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847739268] [2020-12-23 09:40:52,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:40:52,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:52,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:40:52,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:40:52,618 INFO L87 Difference]: Start difference. First operand 3992 states and 6384 transitions. Second operand 4 states. [2020-12-23 09:40:53,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:53,031 INFO L93 Difference]: Finished difference Result 13018 states and 20914 transitions. [2020-12-23 09:40:53,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:40:53,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-23 09:40:53,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:53,124 INFO L225 Difference]: With dead ends: 13018 [2020-12-23 09:40:53,124 INFO L226 Difference]: Without dead ends: 9105 [2020-12-23 09:40:53,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:40:53,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9105 states. [2020-12-23 09:40:53,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9105 to 6388. [2020-12-23 09:40:53,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6388 states. [2020-12-23 09:40:53,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6388 states to 6388 states and 10164 transitions. [2020-12-23 09:40:53,581 INFO L78 Accepts]: Start accepts. Automaton has 6388 states and 10164 transitions. Word has length 71 [2020-12-23 09:40:53,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:53,582 INFO L481 AbstractCegarLoop]: Abstraction has 6388 states and 10164 transitions. [2020-12-23 09:40:53,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:40:53,582 INFO L276 IsEmpty]: Start isEmpty. Operand 6388 states and 10164 transitions. [2020-12-23 09:40:53,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 09:40:53,589 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:53,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:53,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:40:53,590 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:53,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:53,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1147279688, now seen corresponding path program 1 times [2020-12-23 09:40:53,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:53,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683303072] [2020-12-23 09:40:53,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:53,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:53,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683303072] [2020-12-23 09:40:53,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:53,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:40:53,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633599402] [2020-12-23 09:40:53,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:40:53,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:53,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:40:53,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:40:53,656 INFO L87 Difference]: Start difference. First operand 6388 states and 10164 transitions. Second operand 4 states. [2020-12-23 09:40:54,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:54,267 INFO L93 Difference]: Finished difference Result 20047 states and 32019 transitions. [2020-12-23 09:40:54,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:40:54,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-12-23 09:40:54,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:54,306 INFO L225 Difference]: With dead ends: 20047 [2020-12-23 09:40:54,306 INFO L226 Difference]: Without dead ends: 13738 [2020-12-23 09:40:54,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:40:54,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13738 states. [2020-12-23 09:40:54,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13738 to 10020. [2020-12-23 09:40:54,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10020 states. [2020-12-23 09:40:55,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10020 states to 10020 states and 15856 transitions. [2020-12-23 09:40:55,022 INFO L78 Accepts]: Start accepts. Automaton has 10020 states and 15856 transitions. Word has length 72 [2020-12-23 09:40:55,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:55,023 INFO L481 AbstractCegarLoop]: Abstraction has 10020 states and 15856 transitions. [2020-12-23 09:40:55,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:40:55,023 INFO L276 IsEmpty]: Start isEmpty. Operand 10020 states and 15856 transitions. [2020-12-23 09:40:55,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 09:40:55,024 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:55,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:55,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:40:55,025 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:55,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:55,025 INFO L82 PathProgramCache]: Analyzing trace with hash -856706640, now seen corresponding path program 1 times [2020-12-23 09:40:55,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:55,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225638919] [2020-12-23 09:40:55,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:55,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:55,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225638919] [2020-12-23 09:40:55,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:55,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:40:55,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246191862] [2020-12-23 09:40:55,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:40:55,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:55,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:40:55,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:40:55,182 INFO L87 Difference]: Start difference. First operand 10020 states and 15856 transitions. Second operand 4 states. [2020-12-23 09:40:56,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:56,269 INFO L93 Difference]: Finished difference Result 29688 states and 46962 transitions. [2020-12-23 09:40:56,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:40:56,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-12-23 09:40:56,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:56,321 INFO L225 Difference]: With dead ends: 29688 [2020-12-23 09:40:56,321 INFO L226 Difference]: Without dead ends: 19677 [2020-12-23 09:40:56,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:40:56,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19677 states. [2020-12-23 09:40:57,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19677 to 19675. [2020-12-23 09:40:57,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19675 states. [2020-12-23 09:40:57,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19675 states to 19675 states and 30894 transitions. [2020-12-23 09:40:57,470 INFO L78 Accepts]: Start accepts. Automaton has 19675 states and 30894 transitions. Word has length 74 [2020-12-23 09:40:57,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:57,470 INFO L481 AbstractCegarLoop]: Abstraction has 19675 states and 30894 transitions. [2020-12-23 09:40:57,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:40:57,471 INFO L276 IsEmpty]: Start isEmpty. Operand 19675 states and 30894 transitions. [2020-12-23 09:40:57,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 09:40:57,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:57,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:57,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:40:57,473 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:57,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:57,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1857988380, now seen corresponding path program 1 times [2020-12-23 09:40:57,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:57,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933978342] [2020-12-23 09:40:57,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:57,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:57,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933978342] [2020-12-23 09:40:57,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:57,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:40:57,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249021589] [2020-12-23 09:40:57,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:40:57,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:57,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:40:57,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:57,517 INFO L87 Difference]: Start difference. First operand 19675 states and 30894 transitions. Second operand 3 states. [2020-12-23 09:40:59,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:59,229 INFO L93 Difference]: Finished difference Result 58987 states and 92620 transitions. [2020-12-23 09:40:59,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:40:59,230 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-23 09:40:59,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:59,341 INFO L225 Difference]: With dead ends: 58987 [2020-12-23 09:40:59,341 INFO L226 Difference]: Without dead ends: 39340 [2020-12-23 09:40:59,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:59,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39340 states. [2020-12-23 09:41:00,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39340 to 19677. [2020-12-23 09:41:00,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19677 states. [2020-12-23 09:41:00,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19677 states to 19677 states and 30896 transitions. [2020-12-23 09:41:00,700 INFO L78 Accepts]: Start accepts. Automaton has 19677 states and 30896 transitions. Word has length 75 [2020-12-23 09:41:00,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:00,700 INFO L481 AbstractCegarLoop]: Abstraction has 19677 states and 30896 transitions. [2020-12-23 09:41:00,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:41:00,701 INFO L276 IsEmpty]: Start isEmpty. Operand 19677 states and 30896 transitions. [2020-12-23 09:41:00,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 09:41:00,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:00,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:41:00,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:41:00,703 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:00,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:00,704 INFO L82 PathProgramCache]: Analyzing trace with hash 424514133, now seen corresponding path program 1 times [2020-12-23 09:41:00,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:00,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635525107] [2020-12-23 09:41:00,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:41:00,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635525107] [2020-12-23 09:41:00,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:00,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:41:00,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362474091] [2020-12-23 09:41:00,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:41:00,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:00,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:41:00,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:41:00,877 INFO L87 Difference]: Start difference. First operand 19677 states and 30896 transitions. Second operand 4 states. [2020-12-23 09:41:02,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:02,539 INFO L93 Difference]: Finished difference Result 58291 states and 91488 transitions. [2020-12-23 09:41:02,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:41:02,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-12-23 09:41:02,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:02,628 INFO L225 Difference]: With dead ends: 58291 [2020-12-23 09:41:02,629 INFO L226 Difference]: Without dead ends: 38626 [2020-12-23 09:41:02,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:41:02,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38626 states. [2020-12-23 09:41:04,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38626 to 38624. [2020-12-23 09:41:04,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38624 states. [2020-12-23 09:41:04,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38624 states to 38624 states and 60157 transitions. [2020-12-23 09:41:04,206 INFO L78 Accepts]: Start accepts. Automaton has 38624 states and 60157 transitions. Word has length 76 [2020-12-23 09:41:04,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:04,207 INFO L481 AbstractCegarLoop]: Abstraction has 38624 states and 60157 transitions. [2020-12-23 09:41:04,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:41:04,207 INFO L276 IsEmpty]: Start isEmpty. Operand 38624 states and 60157 transitions. [2020-12-23 09:41:04,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 09:41:04,208 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:04,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:41:04,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:41:04,208 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:04,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:04,209 INFO L82 PathProgramCache]: Analyzing trace with hash 551656516, now seen corresponding path program 1 times [2020-12-23 09:41:04,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:04,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094157290] [2020-12-23 09:41:04,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:04,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:41:04,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094157290] [2020-12-23 09:41:04,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:04,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:41:04,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629205761] [2020-12-23 09:41:04,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:41:04,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:04,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:41:04,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:41:04,303 INFO L87 Difference]: Start difference. First operand 38624 states and 60157 transitions. Second operand 4 states. [2020-12-23 09:41:07,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:07,027 INFO L93 Difference]: Finished difference Result 114364 states and 178019 transitions. [2020-12-23 09:41:07,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:41:07,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-12-23 09:41:07,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:07,193 INFO L225 Difference]: With dead ends: 114364 [2020-12-23 09:41:07,193 INFO L226 Difference]: Without dead ends: 75786 [2020-12-23 09:41:07,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:41:07,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75786 states. [2020-12-23 09:41:10,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75786 to 75784. [2020-12-23 09:41:10,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75784 states. [2020-12-23 09:41:10,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75784 states to 75784 states and 117031 transitions. [2020-12-23 09:41:10,589 INFO L78 Accepts]: Start accepts. Automaton has 75784 states and 117031 transitions. Word has length 76 [2020-12-23 09:41:10,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:10,589 INFO L481 AbstractCegarLoop]: Abstraction has 75784 states and 117031 transitions. [2020-12-23 09:41:10,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:41:10,589 INFO L276 IsEmpty]: Start isEmpty. Operand 75784 states and 117031 transitions. [2020-12-23 09:41:10,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 09:41:10,591 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:10,591 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:41:10,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:41:10,592 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:10,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:10,592 INFO L82 PathProgramCache]: Analyzing trace with hash -656359944, now seen corresponding path program 1 times [2020-12-23 09:41:10,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:10,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913964692] [2020-12-23 09:41:10,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:10,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:41:10,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913964692] [2020-12-23 09:41:10,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:10,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:41:10,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022989360] [2020-12-23 09:41:10,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:41:10,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:10,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:41:10,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:41:10,636 INFO L87 Difference]: Start difference. First operand 75784 states and 117031 transitions. Second operand 3 states. [2020-12-23 09:41:16,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:16,439 INFO L93 Difference]: Finished difference Result 227228 states and 350901 transitions. [2020-12-23 09:41:16,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:41:16,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-23 09:41:16,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:16,738 INFO L225 Difference]: With dead ends: 227228 [2020-12-23 09:41:16,738 INFO L226 Difference]: Without dead ends: 151518 [2020-12-23 09:41:16,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:41:16,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151518 states. [2020-12-23 09:41:21,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151518 to 75792. [2020-12-23 09:41:21,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75792 states. [2020-12-23 09:41:21,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75792 states to 75792 states and 117039 transitions. [2020-12-23 09:41:21,211 INFO L78 Accepts]: Start accepts. Automaton has 75792 states and 117039 transitions. Word has length 77 [2020-12-23 09:41:21,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:21,212 INFO L481 AbstractCegarLoop]: Abstraction has 75792 states and 117039 transitions. [2020-12-23 09:41:21,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:41:21,212 INFO L276 IsEmpty]: Start isEmpty. Operand 75792 states and 117039 transitions. [2020-12-23 09:41:21,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 09:41:21,220 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:21,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:41:21,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 09:41:21,221 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:21,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:21,221 INFO L82 PathProgramCache]: Analyzing trace with hash 834408617, now seen corresponding path program 1 times [2020-12-23 09:41:21,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:21,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425232487] [2020-12-23 09:41:21,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:41:21,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425232487] [2020-12-23 09:41:21,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:21,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:41:21,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288612503] [2020-12-23 09:41:21,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:41:21,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:21,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:41:21,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:41:21,339 INFO L87 Difference]: Start difference. First operand 75792 states and 117039 transitions. Second operand 4 states. [2020-12-23 09:41:27,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:27,519 INFO L93 Difference]: Finished difference Result 224404 states and 346298 transitions. [2020-12-23 09:41:27,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:41:27,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-23 09:41:27,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:27,954 INFO L225 Difference]: With dead ends: 224404 [2020-12-23 09:41:27,954 INFO L226 Difference]: Without dead ends: 148667 [2020-12-23 09:41:28,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:41:28,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148667 states. [2020-12-23 09:41:34,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148667 to 148665. [2020-12-23 09:41:34,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148665 states. [2020-12-23 09:41:35,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148665 states to 148665 states and 227541 transitions. [2020-12-23 09:41:35,043 INFO L78 Accepts]: Start accepts. Automaton has 148665 states and 227541 transitions. Word has length 78 [2020-12-23 09:41:35,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:35,044 INFO L481 AbstractCegarLoop]: Abstraction has 148665 states and 227541 transitions. [2020-12-23 09:41:35,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:41:35,044 INFO L276 IsEmpty]: Start isEmpty. Operand 148665 states and 227541 transitions. [2020-12-23 09:41:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 09:41:35,047 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:35,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:41:35,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 09:41:35,047 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:35,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:35,048 INFO L82 PathProgramCache]: Analyzing trace with hash 640680152, now seen corresponding path program 1 times [2020-12-23 09:41:35,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:35,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102327917] [2020-12-23 09:41:35,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:35,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:41:35,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102327917] [2020-12-23 09:41:35,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:35,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:41:35,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687623079] [2020-12-23 09:41:35,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:41:35,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:35,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:41:35,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:41:35,181 INFO L87 Difference]: Start difference. First operand 148665 states and 227541 transitions. Second operand 4 states. [2020-12-23 09:41:47,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:47,520 INFO L93 Difference]: Finished difference Result 440021 states and 672927 transitions. [2020-12-23 09:41:47,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:41:47,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-23 09:41:47,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:48,261 INFO L225 Difference]: With dead ends: 440021 [2020-12-23 09:41:48,261 INFO L226 Difference]: Without dead ends: 291515 [2020-12-23 09:41:48,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:41:48,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291515 states. [2020-12-23 09:42:01,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291515 to 291513. [2020-12-23 09:42:01,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291513 states. [2020-12-23 09:42:02,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291513 states to 291513 states and 442037 transitions. [2020-12-23 09:42:02,679 INFO L78 Accepts]: Start accepts. Automaton has 291513 states and 442037 transitions. Word has length 78 [2020-12-23 09:42:02,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:02,679 INFO L481 AbstractCegarLoop]: Abstraction has 291513 states and 442037 transitions. [2020-12-23 09:42:02,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:42:02,679 INFO L276 IsEmpty]: Start isEmpty. Operand 291513 states and 442037 transitions. [2020-12-23 09:42:02,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 09:42:02,684 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:02,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:42:02,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 09:42:02,684 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:02,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:02,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1890599668, now seen corresponding path program 1 times [2020-12-23 09:42:02,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:02,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122578636] [2020-12-23 09:42:02,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:42:02,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122578636] [2020-12-23 09:42:02,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:02,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:42:02,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595009566] [2020-12-23 09:42:02,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:42:02,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:02,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:42:02,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:42:02,725 INFO L87 Difference]: Start difference. First operand 291513 states and 442037 transitions. Second operand 3 states. [2020-12-23 09:42:27,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:27,612 INFO L93 Difference]: Finished difference Result 873245 states and 1324519 transitions. [2020-12-23 09:42:27,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:42:27,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-23 09:42:27,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:28,888 INFO L225 Difference]: With dead ends: 873245 [2020-12-23 09:42:28,888 INFO L226 Difference]: Without dead ends: 582795 [2020-12-23 09:42:29,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:42:30,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582795 states. [2020-12-23 09:42:47,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582795 to 291545. [2020-12-23 09:42:47,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291545 states. [2020-12-23 09:42:49,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291545 states to 291545 states and 442069 transitions. [2020-12-23 09:42:49,169 INFO L78 Accepts]: Start accepts. Automaton has 291545 states and 442069 transitions. Word has length 79 [2020-12-23 09:42:49,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:49,169 INFO L481 AbstractCegarLoop]: Abstraction has 291545 states and 442069 transitions. [2020-12-23 09:42:49,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:42:49,169 INFO L276 IsEmpty]: Start isEmpty. Operand 291545 states and 442069 transitions. [2020-12-23 09:42:49,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 09:42:49,176 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:49,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:42:49,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 09:42:49,176 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:49,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:49,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1453451011, now seen corresponding path program 1 times [2020-12-23 09:42:49,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:49,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103068572] [2020-12-23 09:42:49,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:42:49,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103068572] [2020-12-23 09:42:49,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:49,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:42:49,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133954998] [2020-12-23 09:42:49,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:42:49,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:49,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:42:49,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:42:49,321 INFO L87 Difference]: Start difference. First operand 291545 states and 442069 transitions. Second operand 4 states. [2020-12-23 09:43:19,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:19,698 INFO L93 Difference]: Finished difference Result 862768 states and 1306995 transitions. [2020-12-23 09:43:19,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:43:19,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-12-23 09:43:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:21,341 INFO L225 Difference]: With dead ends: 862768 [2020-12-23 09:43:21,341 INFO L226 Difference]: Without dead ends: 571474 [2020-12-23 09:43:21,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:43:22,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571474 states.