/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.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:41:37,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:41:37,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:41:37,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:41:37,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:41:37,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:41:37,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:41:37,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:41:37,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:41:37,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:41:37,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:41:37,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:41:37,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:41:37,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:41:37,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:41:37,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:41:37,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:41:37,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:41:37,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:41:37,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:41:37,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:41:37,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:41:37,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:41:37,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:41:37,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:41:37,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:41:37,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:41:37,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:41:37,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:41:37,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:41:37,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:41:37,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:41:37,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:41:37,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:41:37,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:41:37,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:41:37,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:41:37,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:41:37,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:41:37,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:41:37,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:41:37,110 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 09:41:37,158 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:41:37,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:41:37,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:41:37,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:41:37,162 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:41:37,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:41:37,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:41:37,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:41:37,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:41:37,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:41:37,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:41:37,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:41:37,167 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:41:37,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:41:37,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:41:37,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:41:37,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:41:37,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:41:37,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:41:37,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:41:37,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:41:37,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:41:37,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:41:37,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:41:37,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:41:37,171 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:41:37,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:41:37,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:41:37,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:41:37,665 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:41:37,666 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:41:37,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c [2020-12-23 09:41:37,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/702ededc3/ab33d2c51da346318d7a3f33a232fe26/FLAGba18cd47b [2020-12-23 09:41:38,389 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:41:38,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c [2020-12-23 09:41:38,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/702ededc3/ab33d2c51da346318d7a3f33a232fe26/FLAGba18cd47b [2020-12-23 09:41:38,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/702ededc3/ab33d2c51da346318d7a3f33a232fe26 [2020-12-23 09:41:38,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:41:38,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:41:38,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:41:38,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:41:38,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:41:38,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:41:38" (1/1) ... [2020-12-23 09:41:38,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db54d79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:38, skipping insertion in model container [2020-12-23 09:41:38,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:41:38" (1/1) ... [2020-12-23 09:41:38,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:41:38,808 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[~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[~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[~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 09:41:39,053 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.UNBOUNDED.pals.c[12914,12927] [2020-12-23 09:41:39,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:41:39,079 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[~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[~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[~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 09:41:39,154 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.UNBOUNDED.pals.c[12914,12927] [2020-12-23 09:41:39,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:41:39,176 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:41:39,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:39 WrapperNode [2020-12-23 09:41:39,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:41:39,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:41:39,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:41:39,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:41:39,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:39" (1/1) ... [2020-12-23 09:41:39,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:39" (1/1) ... [2020-12-23 09:41:39,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:41:39,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:41:39,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:41:39,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:41:39,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:39" (1/1) ... [2020-12-23 09:41:39,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:39" (1/1) ... [2020-12-23 09:41:39,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:39" (1/1) ... [2020-12-23 09:41:39,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:39" (1/1) ... [2020-12-23 09:41:39,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:39" (1/1) ... [2020-12-23 09:41:39,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:39" (1/1) ... [2020-12-23 09:41:39,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:39" (1/1) ... [2020-12-23 09:41:39,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:41:39,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:41:39,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:41:39,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:41:39,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:39" (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 09:41:39,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:41:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:41:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:41:39,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:41:40,380 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:41:40,380 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-23 09:41:40,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:41:40 BoogieIcfgContainer [2020-12-23 09:41:40,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:41:40,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:41:40,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:41:40,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:41:40,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:41:38" (1/3) ... [2020-12-23 09:41:40,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655a6d27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:41:40, skipping insertion in model container [2020-12-23 09:41:40,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:41:39" (2/3) ... [2020-12-23 09:41:40,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655a6d27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:41:40, skipping insertion in model container [2020-12-23 09:41:40,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:41:40" (3/3) ... [2020-12-23 09:41:40,403 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.UNBOUNDED.pals.c [2020-12-23 09:41:40,410 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:41:40,415 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 09:41:40,435 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 09:41:40,480 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:41:40,480 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:41:40,480 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:41:40,481 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:41:40,481 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:41:40,481 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:41:40,481 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:41:40,482 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:41:40,507 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states. [2020-12-23 09:41:40,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 09:41:40,522 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:40,523 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 09:41:40,523 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:40,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:40,531 INFO L82 PathProgramCache]: Analyzing trace with hash 298975739, now seen corresponding path program 1 times [2020-12-23 09:41:40,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:40,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641177026] [2020-12-23 09:41:40,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:40,850 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 09:41:40,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641177026] [2020-12-23 09:41:40,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:40,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:41:40,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695010936] [2020-12-23 09:41:40,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 09:41:40,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:40,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 09:41:40,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 09:41:40,876 INFO L87 Difference]: Start difference. First operand 136 states. Second operand 2 states. [2020-12-23 09:41:40,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:40,907 INFO L93 Difference]: Finished difference Result 212 states and 365 transitions. [2020-12-23 09:41:40,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 09:41:40,908 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2020-12-23 09:41:40,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:40,921 INFO L225 Difference]: With dead ends: 212 [2020-12-23 09:41:40,921 INFO L226 Difference]: Without dead ends: 132 [2020-12-23 09:41:40,925 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 09:41:40,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-23 09:41:40,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-12-23 09:41:40,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-23 09:41:40,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 228 transitions. [2020-12-23 09:41:40,975 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 228 transitions. Word has length 37 [2020-12-23 09:41:40,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:40,976 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 228 transitions. [2020-12-23 09:41:40,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 09:41:40,978 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 228 transitions. [2020-12-23 09:41:40,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 09:41:40,981 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:40,981 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 09:41:40,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:41:40,981 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:40,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:40,982 INFO L82 PathProgramCache]: Analyzing trace with hash -518672711, now seen corresponding path program 1 times [2020-12-23 09:41:40,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:40,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377270490] [2020-12-23 09:41:40,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:41,119 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 09:41:41,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377270490] [2020-12-23 09:41:41,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:41,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:41:41,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904647491] [2020-12-23 09:41:41,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:41:41,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:41,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:41:41,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:41:41,124 INFO L87 Difference]: Start difference. First operand 132 states and 228 transitions. Second operand 5 states. [2020-12-23 09:41:41,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:41,298 INFO L93 Difference]: Finished difference Result 211 states and 358 transitions. [2020-12-23 09:41:41,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:41:41,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-12-23 09:41:41,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:41,304 INFO L225 Difference]: With dead ends: 211 [2020-12-23 09:41:41,304 INFO L226 Difference]: Without dead ends: 132 [2020-12-23 09:41:41,306 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 09:41:41,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-23 09:41:41,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-12-23 09:41:41,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-23 09:41:41,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 201 transitions. [2020-12-23 09:41:41,330 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 201 transitions. Word has length 37 [2020-12-23 09:41:41,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:41,331 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 201 transitions. [2020-12-23 09:41:41,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:41:41,334 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 201 transitions. [2020-12-23 09:41:41,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 09:41:41,342 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:41,342 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 09:41:41,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:41:41,343 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:41,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:41,346 INFO L82 PathProgramCache]: Analyzing trace with hash -707453694, now seen corresponding path program 1 times [2020-12-23 09:41:41,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:41,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640746206] [2020-12-23 09:41:41,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:41,579 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 09:41:41,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640746206] [2020-12-23 09:41:41,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:41,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:41:41,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610345720] [2020-12-23 09:41:41,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:41:41,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:41,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:41:41,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:41:41,582 INFO L87 Difference]: Start difference. First operand 132 states and 201 transitions. Second operand 3 states. [2020-12-23 09:41:41,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:41,646 INFO L93 Difference]: Finished difference Result 273 states and 436 transitions. [2020-12-23 09:41:41,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:41:41,647 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-23 09:41:41,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:41,650 INFO L225 Difference]: With dead ends: 273 [2020-12-23 09:41:41,650 INFO L226 Difference]: Without dead ends: 198 [2020-12-23 09:41:41,651 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 09:41:41,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-12-23 09:41:41,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 195. [2020-12-23 09:41:41,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-12-23 09:41:41,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 302 transitions. [2020-12-23 09:41:41,672 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 302 transitions. Word has length 63 [2020-12-23 09:41:41,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:41,672 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 302 transitions. [2020-12-23 09:41:41,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:41:41,672 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 302 transitions. [2020-12-23 09:41:41,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 09:41:41,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:41,675 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 09:41:41,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:41:41,676 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:41,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:41,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1995563601, now seen corresponding path program 1 times [2020-12-23 09:41:41,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:41,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704971533] [2020-12-23 09:41:41,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:41,795 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 09:41:41,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704971533] [2020-12-23 09:41:41,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:41,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:41:41,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367367871] [2020-12-23 09:41:41,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:41:41,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:41,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:41:41,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:41:41,801 INFO L87 Difference]: Start difference. First operand 195 states and 302 transitions. Second operand 3 states. [2020-12-23 09:41:41,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:41,866 INFO L93 Difference]: Finished difference Result 457 states and 730 transitions. [2020-12-23 09:41:41,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:41:41,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-23 09:41:41,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:41,870 INFO L225 Difference]: With dead ends: 457 [2020-12-23 09:41:41,870 INFO L226 Difference]: Without dead ends: 319 [2020-12-23 09:41:41,871 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 09:41:41,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-12-23 09:41:41,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 315. [2020-12-23 09:41:41,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-12-23 09:41:41,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 496 transitions. [2020-12-23 09:41:41,898 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 496 transitions. Word has length 65 [2020-12-23 09:41:41,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:41,898 INFO L481 AbstractCegarLoop]: Abstraction has 315 states and 496 transitions. [2020-12-23 09:41:41,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:41:41,899 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 496 transitions. [2020-12-23 09:41:41,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:41:41,901 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:41,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:41:41,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:41:41,901 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:41,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:41,902 INFO L82 PathProgramCache]: Analyzing trace with hash -2137075392, now seen corresponding path program 1 times [2020-12-23 09:41:41,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:41,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155286712] [2020-12-23 09:41:41,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:42,026 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 09:41:42,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155286712] [2020-12-23 09:41:42,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:42,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:41:42,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851527927] [2020-12-23 09:41:42,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:41:42,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:42,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:41:42,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:41:42,032 INFO L87 Difference]: Start difference. First operand 315 states and 496 transitions. Second operand 3 states. [2020-12-23 09:41:42,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:42,106 INFO L93 Difference]: Finished difference Result 803 states and 1286 transitions. [2020-12-23 09:41:42,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:41:42,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-23 09:41:42,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:42,110 INFO L225 Difference]: With dead ends: 803 [2020-12-23 09:41:42,110 INFO L226 Difference]: Without dead ends: 545 [2020-12-23 09:41:42,115 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 09:41:42,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-12-23 09:41:42,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 539. [2020-12-23 09:41:42,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-12-23 09:41:42,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 852 transitions. [2020-12-23 09:41:42,163 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 852 transitions. Word has length 67 [2020-12-23 09:41:42,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:42,165 INFO L481 AbstractCegarLoop]: Abstraction has 539 states and 852 transitions. [2020-12-23 09:41:42,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:41:42,166 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 852 transitions. [2020-12-23 09:41:42,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 09:41:42,171 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:42,172 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 09:41:42,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:41:42,172 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:42,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:42,173 INFO L82 PathProgramCache]: Analyzing trace with hash -544230961, now seen corresponding path program 1 times [2020-12-23 09:41:42,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:42,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424004028] [2020-12-23 09:41:42,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:42,387 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 09:41:42,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424004028] [2020-12-23 09:41:42,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:42,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:41:42,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233979259] [2020-12-23 09:41:42,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:41:42,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:42,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:41:42,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:41:42,392 INFO L87 Difference]: Start difference. First operand 539 states and 852 transitions. Second operand 5 states. [2020-12-23 09:41:42,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:42,616 INFO L93 Difference]: Finished difference Result 2303 states and 3746 transitions. [2020-12-23 09:41:42,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:41:42,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-23 09:41:42,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:42,627 INFO L225 Difference]: With dead ends: 2303 [2020-12-23 09:41:42,627 INFO L226 Difference]: Without dead ends: 1821 [2020-12-23 09:41:42,628 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 09:41:42,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2020-12-23 09:41:42,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 960. [2020-12-23 09:41:42,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2020-12-23 09:41:42,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1532 transitions. [2020-12-23 09:41:42,679 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1532 transitions. Word has length 69 [2020-12-23 09:41:42,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:42,679 INFO L481 AbstractCegarLoop]: Abstraction has 960 states and 1532 transitions. [2020-12-23 09:41:42,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:41:42,680 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1532 transitions. [2020-12-23 09:41:42,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 09:41:42,681 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:42,681 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 09:41:42,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:41:42,682 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:42,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:42,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1614123231, now seen corresponding path program 1 times [2020-12-23 09:41:42,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:42,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128743238] [2020-12-23 09:41:42,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:42,746 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 09:41:42,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128743238] [2020-12-23 09:41:42,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:42,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:41:42,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881097021] [2020-12-23 09:41:42,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:41:42,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:42,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:41:42,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:41:42,748 INFO L87 Difference]: Start difference. First operand 960 states and 1532 transitions. Second operand 4 states. [2020-12-23 09:41:42,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:42,883 INFO L93 Difference]: Finished difference Result 2793 states and 4533 transitions. [2020-12-23 09:41:42,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:41:42,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-12-23 09:41:42,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:42,894 INFO L225 Difference]: With dead ends: 2793 [2020-12-23 09:41:42,894 INFO L226 Difference]: Without dead ends: 1890 [2020-12-23 09:41:42,896 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 09:41:42,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2020-12-23 09:41:42,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1416. [2020-12-23 09:41:42,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1416 states. [2020-12-23 09:41:42,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 2275 transitions. [2020-12-23 09:41:42,982 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 2275 transitions. Word has length 70 [2020-12-23 09:41:42,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:42,982 INFO L481 AbstractCegarLoop]: Abstraction has 1416 states and 2275 transitions. [2020-12-23 09:41:42,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:41:42,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 2275 transitions. [2020-12-23 09:41:42,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 09:41:42,985 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:42,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:41:42,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:41:42,986 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:42,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:42,986 INFO L82 PathProgramCache]: Analyzing trace with hash -252040890, now seen corresponding path program 1 times [2020-12-23 09:41:42,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:42,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256905291] [2020-12-23 09:41:42,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:43,119 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 09:41:43,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256905291] [2020-12-23 09:41:43,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:43,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:41:43,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374199686] [2020-12-23 09:41:43,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:41:43,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:43,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:41:43,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:41:43,122 INFO L87 Difference]: Start difference. First operand 1416 states and 2275 transitions. Second operand 4 states. [2020-12-23 09:41:43,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:43,290 INFO L93 Difference]: Finished difference Result 4216 states and 6836 transitions. [2020-12-23 09:41:43,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:41:43,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-23 09:41:43,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:43,307 INFO L225 Difference]: With dead ends: 4216 [2020-12-23 09:41:43,307 INFO L226 Difference]: Without dead ends: 2857 [2020-12-23 09:41:43,310 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 09:41:43,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2020-12-23 09:41:43,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2067. [2020-12-23 09:41:43,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2067 states. [2020-12-23 09:41:43,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2067 states to 2067 states and 3322 transitions. [2020-12-23 09:41:43,463 INFO L78 Accepts]: Start accepts. Automaton has 2067 states and 3322 transitions. Word has length 71 [2020-12-23 09:41:43,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:43,464 INFO L481 AbstractCegarLoop]: Abstraction has 2067 states and 3322 transitions. [2020-12-23 09:41:43,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:41:43,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2067 states and 3322 transitions. [2020-12-23 09:41:43,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 09:41:43,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:43,466 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 09:41:43,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:41:43,466 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:43,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:43,467 INFO L82 PathProgramCache]: Analyzing trace with hash -630566449, now seen corresponding path program 1 times [2020-12-23 09:41:43,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:43,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253831738] [2020-12-23 09:41:43,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:43,530 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 09:41:43,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253831738] [2020-12-23 09:41:43,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:43,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:41:43,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743600139] [2020-12-23 09:41:43,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:41:43,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:43,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:41:43,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:41:43,533 INFO L87 Difference]: Start difference. First operand 2067 states and 3322 transitions. Second operand 3 states. [2020-12-23 09:41:43,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:43,641 INFO L93 Difference]: Finished difference Result 4274 states and 6880 transitions. [2020-12-23 09:41:43,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:41:43,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-23 09:41:43,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:43,656 INFO L225 Difference]: With dead ends: 4274 [2020-12-23 09:41:43,657 INFO L226 Difference]: Without dead ends: 3076 [2020-12-23 09:41:43,659 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 09:41:43,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2020-12-23 09:41:43,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3074. [2020-12-23 09:41:43,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3074 states. [2020-12-23 09:41:43,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3074 states to 3074 states and 4900 transitions. [2020-12-23 09:41:43,793 INFO L78 Accepts]: Start accepts. Automaton has 3074 states and 4900 transitions. Word has length 72 [2020-12-23 09:41:43,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:43,794 INFO L481 AbstractCegarLoop]: Abstraction has 3074 states and 4900 transitions. [2020-12-23 09:41:43,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:41:43,794 INFO L276 IsEmpty]: Start isEmpty. Operand 3074 states and 4900 transitions. [2020-12-23 09:41:43,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 09:41:43,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:43,801 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 09:41:43,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:41:43,802 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:43,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:43,803 INFO L82 PathProgramCache]: Analyzing trace with hash -808156936, now seen corresponding path program 1 times [2020-12-23 09:41:43,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:43,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702057884] [2020-12-23 09:41:43,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:43,921 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 09:41:43,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702057884] [2020-12-23 09:41:43,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:43,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:41:43,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042416155] [2020-12-23 09:41:43,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:41:43,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:43,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:41:43,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:41:43,925 INFO L87 Difference]: Start difference. First operand 3074 states and 4900 transitions. Second operand 4 states. [2020-12-23 09:41:44,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:44,235 INFO L93 Difference]: Finished difference Result 9240 states and 14853 transitions. [2020-12-23 09:41:44,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:41:44,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-12-23 09:41:44,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:44,268 INFO L225 Difference]: With dead ends: 9240 [2020-12-23 09:41:44,269 INFO L226 Difference]: Without dead ends: 6354 [2020-12-23 09:41:44,275 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 09:41:44,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6354 states. [2020-12-23 09:41:44,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6354 to 4698. [2020-12-23 09:41:44,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4698 states. [2020-12-23 09:41:44,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4698 states to 4698 states and 7486 transitions. [2020-12-23 09:41:44,527 INFO L78 Accepts]: Start accepts. Automaton has 4698 states and 7486 transitions. Word has length 72 [2020-12-23 09:41:44,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:44,527 INFO L481 AbstractCegarLoop]: Abstraction has 4698 states and 7486 transitions. [2020-12-23 09:41:44,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:41:44,527 INFO L276 IsEmpty]: Start isEmpty. Operand 4698 states and 7486 transitions. [2020-12-23 09:41:44,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 09:41:44,529 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:44,529 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 09:41:44,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:41:44,530 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:44,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:44,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1968035874, now seen corresponding path program 1 times [2020-12-23 09:41:44,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:44,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011836701] [2020-12-23 09:41:44,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:44,576 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 09:41:44,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011836701] [2020-12-23 09:41:44,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:44,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:41:44,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309186029] [2020-12-23 09:41:44,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:41:44,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:44,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:41:44,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:41:44,579 INFO L87 Difference]: Start difference. First operand 4698 states and 7486 transitions. Second operand 3 states. [2020-12-23 09:41:44,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:44,816 INFO L93 Difference]: Finished difference Result 10286 states and 16464 transitions. [2020-12-23 09:41:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:41:44,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-23 09:41:44,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:44,873 INFO L225 Difference]: With dead ends: 10286 [2020-12-23 09:41:44,875 INFO L226 Difference]: Without dead ends: 6983 [2020-12-23 09:41:44,883 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 09:41:44,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6983 states. [2020-12-23 09:41:45,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6983 to 6981. [2020-12-23 09:41:45,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6981 states. [2020-12-23 09:41:45,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6981 states to 6981 states and 11071 transitions. [2020-12-23 09:41:45,276 INFO L78 Accepts]: Start accepts. Automaton has 6981 states and 11071 transitions. Word has length 72 [2020-12-23 09:41:45,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:45,277 INFO L481 AbstractCegarLoop]: Abstraction has 6981 states and 11071 transitions. [2020-12-23 09:41:45,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:41:45,277 INFO L276 IsEmpty]: Start isEmpty. Operand 6981 states and 11071 transitions. [2020-12-23 09:41:45,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 09:41:45,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:45,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:41:45,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:41:45,279 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:45,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:45,279 INFO L82 PathProgramCache]: Analyzing trace with hash 952039085, now seen corresponding path program 1 times [2020-12-23 09:41:45,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:45,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171306193] [2020-12-23 09:41:45,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:45,323 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 09:41:45,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171306193] [2020-12-23 09:41:45,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:45,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:41:45,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652904685] [2020-12-23 09:41:45,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:41:45,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:45,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:41:45,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:41:45,326 INFO L87 Difference]: Start difference. First operand 6981 states and 11071 transitions. Second operand 3 states. [2020-12-23 09:41:45,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:45,736 INFO L93 Difference]: Finished difference Result 15555 states and 24952 transitions. [2020-12-23 09:41:45,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:41:45,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-23 09:41:45,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:45,760 INFO L225 Difference]: With dead ends: 15555 [2020-12-23 09:41:45,760 INFO L226 Difference]: Without dead ends: 10468 [2020-12-23 09:41:45,769 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 09:41:45,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10468 states. [2020-12-23 09:41:46,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10468 to 10466. [2020-12-23 09:41:46,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10466 states. [2020-12-23 09:41:46,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10466 states to 10466 states and 16575 transitions. [2020-12-23 09:41:46,342 INFO L78 Accepts]: Start accepts. Automaton has 10466 states and 16575 transitions. Word has length 72 [2020-12-23 09:41:46,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:46,343 INFO L481 AbstractCegarLoop]: Abstraction has 10466 states and 16575 transitions. [2020-12-23 09:41:46,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:41:46,343 INFO L276 IsEmpty]: Start isEmpty. Operand 10466 states and 16575 transitions. [2020-12-23 09:41:46,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 09:41:46,344 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:46,344 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 09:41:46,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:41:46,344 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:46,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:46,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1377255792, now seen corresponding path program 1 times [2020-12-23 09:41:46,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:46,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123747560] [2020-12-23 09:41:46,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:41:46,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123747560] [2020-12-23 09:41:46,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:46,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:41:46,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437285960] [2020-12-23 09:41:46,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:41:46,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:46,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:41:46,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:41:46,515 INFO L87 Difference]: Start difference. First operand 10466 states and 16575 transitions. Second operand 4 states. [2020-12-23 09:41:47,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:47,339 INFO L93 Difference]: Finished difference Result 31026 states and 49119 transitions. [2020-12-23 09:41:47,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:41:47,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-12-23 09:41:47,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:47,393 INFO L225 Difference]: With dead ends: 31026 [2020-12-23 09:41:47,393 INFO L226 Difference]: Without dead ends: 20569 [2020-12-23 09:41:47,484 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 09:41:47,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20569 states. [2020-12-23 09:41:48,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20569 to 20567. [2020-12-23 09:41:48,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20567 states. [2020-12-23 09:41:48,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20567 states to 20567 states and 32332 transitions. [2020-12-23 09:41:48,460 INFO L78 Accepts]: Start accepts. Automaton has 20567 states and 32332 transitions. Word has length 74 [2020-12-23 09:41:48,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:48,463 INFO L481 AbstractCegarLoop]: Abstraction has 20567 states and 32332 transitions. [2020-12-23 09:41:48,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:41:48,463 INFO L276 IsEmpty]: Start isEmpty. Operand 20567 states and 32332 transitions. [2020-12-23 09:41:48,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 09:41:48,465 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:48,466 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 09:41:48,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:41:48,466 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:48,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:48,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1916429764, now seen corresponding path program 1 times [2020-12-23 09:41:48,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:48,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280732560] [2020-12-23 09:41:48,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:48,502 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 09:41:48,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280732560] [2020-12-23 09:41:48,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:48,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:41:48,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748262534] [2020-12-23 09:41:48,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:41:48,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:48,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:41:48,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:41:48,505 INFO L87 Difference]: Start difference. First operand 20567 states and 32332 transitions. Second operand 3 states. [2020-12-23 09:41:49,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:49,857 INFO L93 Difference]: Finished difference Result 61663 states and 96934 transitions. [2020-12-23 09:41:49,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:41:49,857 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-23 09:41:49,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:49,963 INFO L225 Difference]: With dead ends: 61663 [2020-12-23 09:41:49,963 INFO L226 Difference]: Without dead ends: 41124 [2020-12-23 09:41:49,990 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 09:41:50,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41124 states. [2020-12-23 09:41:51,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41124 to 20569. [2020-12-23 09:41:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20569 states. [2020-12-23 09:41:51,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20569 states to 20569 states and 32334 transitions. [2020-12-23 09:41:51,079 INFO L78 Accepts]: Start accepts. Automaton has 20569 states and 32334 transitions. Word has length 75 [2020-12-23 09:41:51,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:51,079 INFO L481 AbstractCegarLoop]: Abstraction has 20569 states and 32334 transitions. [2020-12-23 09:41:51,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:41:51,079 INFO L276 IsEmpty]: Start isEmpty. Operand 20569 states and 32334 transitions. [2020-12-23 09:41:51,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 09:41:51,080 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:51,080 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 09:41:51,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:41:51,081 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:51,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:51,081 INFO L82 PathProgramCache]: Analyzing trace with hash 539922453, now seen corresponding path program 1 times [2020-12-23 09:41:51,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:51,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947481297] [2020-12-23 09:41:51,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:51,177 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 09:41:51,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947481297] [2020-12-23 09:41:51,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:51,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:41:51,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631777056] [2020-12-23 09:41:51,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:41:51,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:51,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:41:51,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:41:51,179 INFO L87 Difference]: Start difference. First operand 20569 states and 32334 transitions. Second operand 4 states. [2020-12-23 09:41:52,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:52,649 INFO L93 Difference]: Finished difference Result 60967 states and 95802 transitions. [2020-12-23 09:41:52,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:41:52,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-12-23 09:41:52,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:52,723 INFO L225 Difference]: With dead ends: 60967 [2020-12-23 09:41:52,724 INFO L226 Difference]: Without dead ends: 40410 [2020-12-23 09:41:52,763 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 09:41:52,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40410 states. [2020-12-23 09:41:54,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40410 to 40408. [2020-12-23 09:41:54,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40408 states. [2020-12-23 09:41:54,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40408 states to 40408 states and 63033 transitions. [2020-12-23 09:41:54,433 INFO L78 Accepts]: Start accepts. Automaton has 40408 states and 63033 transitions. Word has length 76 [2020-12-23 09:41:54,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:54,434 INFO L481 AbstractCegarLoop]: Abstraction has 40408 states and 63033 transitions. [2020-12-23 09:41:54,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:41:54,434 INFO L276 IsEmpty]: Start isEmpty. Operand 40408 states and 63033 transitions. [2020-12-23 09:41:54,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 09:41:54,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:54,439 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 09:41:54,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:41:54,440 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:54,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:54,441 INFO L82 PathProgramCache]: Analyzing trace with hash 31107364, now seen corresponding path program 1 times [2020-12-23 09:41:54,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:54,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218301472] [2020-12-23 09:41:54,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:54,529 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 09:41:54,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218301472] [2020-12-23 09:41:54,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:54,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:41:54,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825275390] [2020-12-23 09:41:54,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:41:54,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:54,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:41:54,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:41:54,532 INFO L87 Difference]: Start difference. First operand 40408 states and 63033 transitions. Second operand 4 states. [2020-12-23 09:41:57,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:57,137 INFO L93 Difference]: Finished difference Result 119716 states and 186647 transitions. [2020-12-23 09:41:57,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:41:57,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-12-23 09:41:57,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:57,273 INFO L225 Difference]: With dead ends: 119716 [2020-12-23 09:41:57,273 INFO L226 Difference]: Without dead ends: 79354 [2020-12-23 09:41:57,311 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 09:41:57,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79354 states. [2020-12-23 09:42:00,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79354 to 79352. [2020-12-23 09:42:00,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79352 states. [2020-12-23 09:42:00,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79352 states to 79352 states and 122783 transitions. [2020-12-23 09:42:00,624 INFO L78 Accepts]: Start accepts. Automaton has 79352 states and 122783 transitions. Word has length 76 [2020-12-23 09:42:00,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:00,625 INFO L481 AbstractCegarLoop]: Abstraction has 79352 states and 122783 transitions. [2020-12-23 09:42:00,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:42:00,625 INFO L276 IsEmpty]: Start isEmpty. Operand 79352 states and 122783 transitions. [2020-12-23 09:42:00,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 09:42:00,627 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:00,627 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 09:42:00,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:42:00,628 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:00,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:00,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1176909096, now seen corresponding path program 1 times [2020-12-23 09:42:00,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:00,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112608258] [2020-12-23 09:42:00,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:00,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:42:00,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112608258] [2020-12-23 09:42:00,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:00,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:42:00,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321496331] [2020-12-23 09:42:00,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:42:00,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:00,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:42:00,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:42:00,663 INFO L87 Difference]: Start difference. First operand 79352 states and 122783 transitions. Second operand 3 states. [2020-12-23 09:42:05,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:05,974 INFO L93 Difference]: Finished difference Result 237932 states and 368157 transitions. [2020-12-23 09:42:05,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:42:05,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-23 09:42:05,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:06,257 INFO L225 Difference]: With dead ends: 237932 [2020-12-23 09:42:06,257 INFO L226 Difference]: Without dead ends: 158654 [2020-12-23 09:42:06,335 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 09:42:06,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158654 states. [2020-12-23 09:42:10,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158654 to 79360. [2020-12-23 09:42:10,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79360 states. [2020-12-23 09:42:10,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79360 states to 79360 states and 122791 transitions. [2020-12-23 09:42:10,390 INFO L78 Accepts]: Start accepts. Automaton has 79360 states and 122791 transitions. Word has length 77 [2020-12-23 09:42:10,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:10,390 INFO L481 AbstractCegarLoop]: Abstraction has 79360 states and 122791 transitions. [2020-12-23 09:42:10,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:42:10,390 INFO L276 IsEmpty]: Start isEmpty. Operand 79360 states and 122791 transitions. [2020-12-23 09:42:10,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 09:42:10,392 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:10,393 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 09:42:10,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 09:42:10,393 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:10,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:10,393 INFO L82 PathProgramCache]: Analyzing trace with hash 604186441, now seen corresponding path program 1 times [2020-12-23 09:42:10,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:10,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742638180] [2020-12-23 09:42:10,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:10,485 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 09:42:10,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742638180] [2020-12-23 09:42:10,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:10,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:42:10,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784728880] [2020-12-23 09:42:10,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:42:10,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:10,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:42:10,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:42:10,487 INFO L87 Difference]: Start difference. First operand 79360 states and 122791 transitions. Second operand 4 states. [2020-12-23 09:42:16,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:16,912 INFO L93 Difference]: Finished difference Result 235108 states and 363554 transitions. [2020-12-23 09:42:16,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:42:16,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-23 09:42:16,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:17,156 INFO L225 Difference]: With dead ends: 235108 [2020-12-23 09:42:17,156 INFO L226 Difference]: Without dead ends: 155803 [2020-12-23 09:42:17,222 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 09:42:17,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155803 states. [2020-12-23 09:42:23,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155803 to 155801. [2020-12-23 09:42:23,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155801 states. [2020-12-23 09:42:24,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155801 states to 155801 states and 239045 transitions. [2020-12-23 09:42:24,068 INFO L78 Accepts]: Start accepts. Automaton has 155801 states and 239045 transitions. Word has length 78 [2020-12-23 09:42:24,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:24,068 INFO L481 AbstractCegarLoop]: Abstraction has 155801 states and 239045 transitions. [2020-12-23 09:42:24,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:42:24,068 INFO L276 IsEmpty]: Start isEmpty. Operand 155801 states and 239045 transitions. [2020-12-23 09:42:24,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 09:42:24,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:24,071 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 09:42:24,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 09:42:24,072 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:24,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:24,072 INFO L82 PathProgramCache]: Analyzing trace with hash 120131000, now seen corresponding path program 1 times [2020-12-23 09:42:24,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:24,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322516294] [2020-12-23 09:42:24,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:24,158 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 09:42:24,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322516294] [2020-12-23 09:42:24,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:24,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:42:24,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867804234] [2020-12-23 09:42:24,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:42:24,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:24,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:42:24,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:42:24,160 INFO L87 Difference]: Start difference. First operand 155801 states and 239045 transitions. Second operand 4 states. [2020-12-23 09:42:36,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:36,036 INFO L93 Difference]: Finished difference Result 461429 states and 707439 transitions. [2020-12-23 09:42:36,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:42:36,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-23 09:42:36,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:36,752 INFO L225 Difference]: With dead ends: 461429 [2020-12-23 09:42:36,752 INFO L226 Difference]: Without dead ends: 305787 [2020-12-23 09:42:36,883 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 09:42:37,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305787 states. [2020-12-23 09:42:50,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305787 to 305785. [2020-12-23 09:42:50,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305785 states. [2020-12-23 09:42:51,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305785 states to 305785 states and 465045 transitions. [2020-12-23 09:42:51,076 INFO L78 Accepts]: Start accepts. Automaton has 305785 states and 465045 transitions. Word has length 78 [2020-12-23 09:42:51,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:51,078 INFO L481 AbstractCegarLoop]: Abstraction has 305785 states and 465045 transitions. [2020-12-23 09:42:51,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:42:51,078 INFO L276 IsEmpty]: Start isEmpty. Operand 305785 states and 465045 transitions. [2020-12-23 09:42:51,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 09:42:51,111 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:51,111 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 09:42:51,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 09:42:51,112 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:51,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:51,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1883818476, now seen corresponding path program 1 times [2020-12-23 09:42:51,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:51,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868827204] [2020-12-23 09:42:51,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:51,168 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 09:42:51,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868827204] [2020-12-23 09:42:51,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:51,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:42:51,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351095361] [2020-12-23 09:42:51,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:42:51,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:51,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:42:51,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:42:51,170 INFO L87 Difference]: Start difference. First operand 305785 states and 465045 transitions. Second operand 3 states. [2020-12-23 09:43:15,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:15,670 INFO L93 Difference]: Finished difference Result 916061 states and 1393543 transitions. [2020-12-23 09:43:15,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:43:15,670 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-23 09:43:15,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:17,134 INFO L225 Difference]: With dead ends: 916061 [2020-12-23 09:43:17,134 INFO L226 Difference]: Without dead ends: 611339 [2020-12-23 09:43:17,456 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 09:43:17,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611339 states.