/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.3.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:42:26,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:42:26,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:42:26,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:42:26,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:42:26,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:42:26,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:42:26,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:42:26,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:42:26,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:42:26,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:42:26,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:42:26,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:42:26,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:42:26,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:42:26,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:42:26,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:42:26,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:42:26,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:42:26,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:42:26,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:42:26,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:42:26,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:42:26,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:42:26,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:42:26,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:42:26,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:42:26,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:42:26,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:42:26,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:42:26,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:42:26,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:42:26,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:42:26,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:42:26,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:42:26,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:42:26,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:42:26,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:42:26,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:42:26,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:42:26,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:42:26,208 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 09:42:26,282 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:42:26,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:42:26,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:42:26,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:42:26,286 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:42:26,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:42:26,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:42:26,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:42:26,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:42:26,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:42:26,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:42:26,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:42:26,288 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:42:26,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:42:26,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:42:26,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:42:26,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:42:26,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:42:26,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:42:26,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:42:26,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:42:26,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:42:26,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:42:26,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:42:26,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:42:26,291 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:42:26,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:42:26,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:42:26,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:42:26,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:42:26,757 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:42:26,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c [2020-12-23 09:42:26,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e8e93c1bc/babfbf9a5cf246e8b6a6f1e5cdfb65e7/FLAG2fd0d101d [2020-12-23 09:42:27,715 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:42:27,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c [2020-12-23 09:42:27,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e8e93c1bc/babfbf9a5cf246e8b6a6f1e5cdfb65e7/FLAG2fd0d101d [2020-12-23 09:42:27,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e8e93c1bc/babfbf9a5cf246e8b6a6f1e5cdfb65e7 [2020-12-23 09:42:27,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:42:27,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:42:27,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:42:27,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:42:28,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:42:28,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:42:27" (1/1) ... [2020-12-23 09:42:28,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fdf948c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:42:28, skipping insertion in model container [2020-12-23 09:42:28,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:42:27" (1/1) ... [2020-12-23 09:42:28,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:42:28,058 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r121~0,] left hand side expression in assignment: lhs: VariableLHS[~r131~0,] left hand side expression in assignment: lhs: VariableLHS[~r211~0,] left hand side expression in assignment: lhs: VariableLHS[~r231~0,] left hand side expression in assignment: lhs: VariableLHS[~r311~0,] left hand side expression in assignment: lhs: VariableLHS[~r321~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~r122~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~r132~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~r212~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~r232~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~r312~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~r322~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~ep12~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep13~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep21~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep23~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep31~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep32~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:42:28,375 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.3.3.ufo.BOUNDED-6.pals.c[12764,12777] [2020-12-23 09:42:28,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:42:28,407 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r121~0,] left hand side expression in assignment: lhs: VariableLHS[~r131~0,] left hand side expression in assignment: lhs: VariableLHS[~r211~0,] left hand side expression in assignment: lhs: VariableLHS[~r231~0,] left hand side expression in assignment: lhs: VariableLHS[~r311~0,] left hand side expression in assignment: lhs: VariableLHS[~r321~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~r122~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~r132~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~r212~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~r232~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~r312~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~r322~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~ep12~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep13~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep21~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep23~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep31~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep32~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:42:28,497 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.3.3.ufo.BOUNDED-6.pals.c[12764,12777] [2020-12-23 09:42:28,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:42:28,533 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:42:28,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:42:28 WrapperNode [2020-12-23 09:42:28,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:42:28,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:42:28,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:42:28,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:42:28,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:42:28" (1/1) ... [2020-12-23 09:42:28,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:42:28" (1/1) ... [2020-12-23 09:42:28,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:42:28,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:42:28,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:42:28,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:42:28,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:42:28" (1/1) ... [2020-12-23 09:42:28,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:42:28" (1/1) ... [2020-12-23 09:42:28,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:42:28" (1/1) ... [2020-12-23 09:42:28,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:42:28" (1/1) ... [2020-12-23 09:42:28,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:42:28" (1/1) ... [2020-12-23 09:42:28,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:42:28" (1/1) ... [2020-12-23 09:42:28,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:42:28" (1/1) ... [2020-12-23 09:42:28,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:42:28,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:42:28,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:42:28,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:42:28,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:42:28" (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 09:42:28,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:42:28,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:42:28,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:42:28,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:42:30,098 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:42:30,099 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-23 09:42:30,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:42:30 BoogieIcfgContainer [2020-12-23 09:42:30,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:42:30,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:42:30,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:42:30,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:42:30,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:42:27" (1/3) ... [2020-12-23 09:42:30,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c05592f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:42:30, skipping insertion in model container [2020-12-23 09:42:30,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:42:28" (2/3) ... [2020-12-23 09:42:30,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c05592f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:42:30, skipping insertion in model container [2020-12-23 09:42:30,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:42:30" (3/3) ... [2020-12-23 09:42:30,114 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c [2020-12-23 09:42:30,122 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:42:30,129 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 09:42:30,158 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 09:42:30,216 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:42:30,216 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:42:30,216 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:42:30,216 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:42:30,217 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:42:30,217 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:42:30,217 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:42:30,217 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:42:30,243 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2020-12-23 09:42:30,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 09:42:30,254 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:30,256 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 09:42:30,256 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:30,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:30,264 INFO L82 PathProgramCache]: Analyzing trace with hash -306716250, now seen corresponding path program 1 times [2020-12-23 09:42:30,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:30,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664284305] [2020-12-23 09:42:30,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:30,565 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 09:42:30,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664284305] [2020-12-23 09:42:30,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:30,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:42:30,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376686738] [2020-12-23 09:42:30,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 09:42:30,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:30,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 09:42:30,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 09:42:30,602 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 2 states. [2020-12-23 09:42:30,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:30,644 INFO L93 Difference]: Finished difference Result 206 states and 352 transitions. [2020-12-23 09:42:30,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 09:42:30,646 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2020-12-23 09:42:30,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:30,664 INFO L225 Difference]: With dead ends: 206 [2020-12-23 09:42:30,664 INFO L226 Difference]: Without dead ends: 127 [2020-12-23 09:42:30,669 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 09:42:30,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-23 09:42:30,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2020-12-23 09:42:30,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-23 09:42:30,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 220 transitions. [2020-12-23 09:42:30,733 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 220 transitions. Word has length 37 [2020-12-23 09:42:30,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:30,734 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 220 transitions. [2020-12-23 09:42:30,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 09:42:30,734 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 220 transitions. [2020-12-23 09:42:30,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 09:42:30,737 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:30,737 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 09:42:30,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:42:30,738 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:30,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:30,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1124364700, now seen corresponding path program 1 times [2020-12-23 09:42:30,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:30,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207427824] [2020-12-23 09:42:30,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:30,952 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 09:42:30,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207427824] [2020-12-23 09:42:30,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:30,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:42:30,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093591870] [2020-12-23 09:42:30,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:42:30,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:30,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:42:30,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:42:30,958 INFO L87 Difference]: Start difference. First operand 127 states and 220 transitions. Second operand 5 states. [2020-12-23 09:42:31,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:31,121 INFO L93 Difference]: Finished difference Result 271 states and 460 transitions. [2020-12-23 09:42:31,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:42:31,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-12-23 09:42:31,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:31,126 INFO L225 Difference]: With dead ends: 271 [2020-12-23 09:42:31,126 INFO L226 Difference]: Without dead ends: 197 [2020-12-23 09:42:31,128 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 09:42:31,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-23 09:42:31,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 127. [2020-12-23 09:42:31,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-23 09:42:31,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 193 transitions. [2020-12-23 09:42:31,150 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 193 transitions. Word has length 37 [2020-12-23 09:42:31,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:31,151 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 193 transitions. [2020-12-23 09:42:31,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:42:31,151 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 193 transitions. [2020-12-23 09:42:31,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 09:42:31,155 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:31,156 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 09:42:31,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:42:31,156 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:31,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:31,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1313145683, now seen corresponding path program 1 times [2020-12-23 09:42:31,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:31,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125849448] [2020-12-23 09:42:31,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:31,335 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 09:42:31,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125849448] [2020-12-23 09:42:31,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:31,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:42:31,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264127765] [2020-12-23 09:42:31,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:42:31,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:31,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:42:31,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:42:31,347 INFO L87 Difference]: Start difference. First operand 127 states and 193 transitions. Second operand 3 states. [2020-12-23 09:42:31,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:31,453 INFO L93 Difference]: Finished difference Result 258 states and 412 transitions. [2020-12-23 09:42:31,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:42:31,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-23 09:42:31,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:31,462 INFO L225 Difference]: With dead ends: 258 [2020-12-23 09:42:31,462 INFO L226 Difference]: Without dead ends: 188 [2020-12-23 09:42:31,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:42:31,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-12-23 09:42:31,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2020-12-23 09:42:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-12-23 09:42:31,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 288 transitions. [2020-12-23 09:42:31,508 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 288 transitions. Word has length 63 [2020-12-23 09:42:31,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:31,509 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 288 transitions. [2020-12-23 09:42:31,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:42:31,511 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 288 transitions. [2020-12-23 09:42:31,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 09:42:31,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:31,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:42:31,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:42:31,520 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:31,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:31,523 INFO L82 PathProgramCache]: Analyzing trace with hash -255493166, now seen corresponding path program 1 times [2020-12-23 09:42:31,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:31,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5741780] [2020-12-23 09:42:31,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:31,624 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 09:42:31,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5741780] [2020-12-23 09:42:31,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:31,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:42:31,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788319434] [2020-12-23 09:42:31,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:42:31,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:31,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:42:31,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:42:31,632 INFO L87 Difference]: Start difference. First operand 186 states and 288 transitions. Second operand 3 states. [2020-12-23 09:42:31,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:31,678 INFO L93 Difference]: Finished difference Result 313 states and 501 transitions. [2020-12-23 09:42:31,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:42:31,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-23 09:42:31,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:31,684 INFO L225 Difference]: With dead ends: 313 [2020-12-23 09:42:31,685 INFO L226 Difference]: Without dead ends: 243 [2020-12-23 09:42:31,689 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 09:42:31,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-12-23 09:42:31,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2020-12-23 09:42:31,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-12-23 09:42:31,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 380 transitions. [2020-12-23 09:42:31,722 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 380 transitions. Word has length 65 [2020-12-23 09:42:31,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:31,722 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 380 transitions. [2020-12-23 09:42:31,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:42:31,723 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 380 transitions. [2020-12-23 09:42:31,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 09:42:31,728 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:31,728 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 09:42:31,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:42:31,730 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:31,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:31,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1395779292, now seen corresponding path program 1 times [2020-12-23 09:42:31,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:31,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604953387] [2020-12-23 09:42:31,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:31,911 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 09:42:31,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604953387] [2020-12-23 09:42:31,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:31,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:42:31,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849118974] [2020-12-23 09:42:31,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:42:31,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:31,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:42:31,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:42:31,916 INFO L87 Difference]: Start difference. First operand 241 states and 380 transitions. Second operand 3 states. [2020-12-23 09:42:31,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:31,989 INFO L93 Difference]: Finished difference Result 584 states and 947 transitions. [2020-12-23 09:42:31,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:42:31,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-23 09:42:31,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:31,996 INFO L225 Difference]: With dead ends: 584 [2020-12-23 09:42:31,997 INFO L226 Difference]: Without dead ends: 402 [2020-12-23 09:42:31,999 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 09:42:32,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2020-12-23 09:42:32,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 400. [2020-12-23 09:42:32,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-12-23 09:42:32,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 640 transitions. [2020-12-23 09:42:32,032 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 640 transitions. Word has length 65 [2020-12-23 09:42:32,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:32,035 INFO L481 AbstractCegarLoop]: Abstraction has 400 states and 640 transitions. [2020-12-23 09:42:32,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:42:32,036 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 640 transitions. [2020-12-23 09:42:32,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:42:32,042 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:32,042 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 09:42:32,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:42:32,043 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:32,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:32,043 INFO L82 PathProgramCache]: Analyzing trace with hash -812427391, now seen corresponding path program 1 times [2020-12-23 09:42:32,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:32,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926856497] [2020-12-23 09:42:32,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:32,177 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 09:42:32,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926856497] [2020-12-23 09:42:32,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:32,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:42:32,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998234568] [2020-12-23 09:42:32,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:42:32,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:32,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:42:32,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:42:32,183 INFO L87 Difference]: Start difference. First operand 400 states and 640 transitions. Second operand 3 states. [2020-12-23 09:42:32,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:32,236 INFO L93 Difference]: Finished difference Result 729 states and 1183 transitions. [2020-12-23 09:42:32,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:42:32,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-23 09:42:32,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:32,245 INFO L225 Difference]: With dead ends: 729 [2020-12-23 09:42:32,246 INFO L226 Difference]: Without dead ends: 547 [2020-12-23 09:42:32,247 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 09:42:32,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2020-12-23 09:42:32,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 545. [2020-12-23 09:42:32,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-12-23 09:42:32,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 875 transitions. [2020-12-23 09:42:32,277 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 875 transitions. Word has length 67 [2020-12-23 09:42:32,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:32,277 INFO L481 AbstractCegarLoop]: Abstraction has 545 states and 875 transitions. [2020-12-23 09:42:32,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:42:32,278 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 875 transitions. [2020-12-23 09:42:32,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:42:32,278 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:32,279 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 09:42:32,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:42:32,279 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:32,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:32,281 INFO L82 PathProgramCache]: Analyzing trace with hash 221435787, now seen corresponding path program 1 times [2020-12-23 09:42:32,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:32,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570924875] [2020-12-23 09:42:32,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:32,473 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 09:42:32,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570924875] [2020-12-23 09:42:32,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:32,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:42:32,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995171987] [2020-12-23 09:42:32,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:42:32,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:32,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:42:32,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:42:32,476 INFO L87 Difference]: Start difference. First operand 545 states and 875 transitions. Second operand 3 states. [2020-12-23 09:42:32,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:32,516 INFO L93 Difference]: Finished difference Result 1434 states and 2326 transitions. [2020-12-23 09:42:32,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:42:32,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-23 09:42:32,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:32,532 INFO L225 Difference]: With dead ends: 1434 [2020-12-23 09:42:32,532 INFO L226 Difference]: Without dead ends: 958 [2020-12-23 09:42:32,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:42:32,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2020-12-23 09:42:32,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 956. [2020-12-23 09:42:32,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 956 states. [2020-12-23 09:42:32,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1532 transitions. [2020-12-23 09:42:32,569 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1532 transitions. Word has length 67 [2020-12-23 09:42:32,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:32,570 INFO L481 AbstractCegarLoop]: Abstraction has 956 states and 1532 transitions. [2020-12-23 09:42:32,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:42:32,570 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1532 transitions. [2020-12-23 09:42:32,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 09:42:32,571 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:32,571 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 09:42:32,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:42:32,572 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:32,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:32,572 INFO L82 PathProgramCache]: Analyzing trace with hash 664156592, now seen corresponding path program 1 times [2020-12-23 09:42:32,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:32,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183518883] [2020-12-23 09:42:32,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:32,632 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 09:42:32,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183518883] [2020-12-23 09:42:32,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:32,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:42:32,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079655787] [2020-12-23 09:42:32,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:42:32,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:32,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:42:32,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:42:32,635 INFO L87 Difference]: Start difference. First operand 956 states and 1532 transitions. Second operand 3 states. [2020-12-23 09:42:32,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:32,680 INFO L93 Difference]: Finished difference Result 1783 states and 2881 transitions. [2020-12-23 09:42:32,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:42:32,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-23 09:42:32,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:32,689 INFO L225 Difference]: With dead ends: 1783 [2020-12-23 09:42:32,689 INFO L226 Difference]: Without dead ends: 1307 [2020-12-23 09:42:32,691 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 09:42:32,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2020-12-23 09:42:32,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1305. [2020-12-23 09:42:32,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-12-23 09:42:32,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 2086 transitions. [2020-12-23 09:42:32,742 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 2086 transitions. Word has length 69 [2020-12-23 09:42:32,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:32,742 INFO L481 AbstractCegarLoop]: Abstraction has 1305 states and 2086 transitions. [2020-12-23 09:42:32,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:42:32,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 2086 transitions. [2020-12-23 09:42:32,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 09:42:32,743 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:32,743 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 09:42:32,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:42:32,744 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:32,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:32,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1757720902, now seen corresponding path program 1 times [2020-12-23 09:42:32,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:32,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034685287] [2020-12-23 09:42:32,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:32,851 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 09:42:32,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034685287] [2020-12-23 09:42:32,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:32,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:42:32,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084817594] [2020-12-23 09:42:32,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:42:32,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:32,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:42:32,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:42:32,854 INFO L87 Difference]: Start difference. First operand 1305 states and 2086 transitions. Second operand 5 states. [2020-12-23 09:42:33,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:33,219 INFO L93 Difference]: Finished difference Result 6582 states and 10723 transitions. [2020-12-23 09:42:33,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:42:33,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-23 09:42:33,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:33,252 INFO L225 Difference]: With dead ends: 6582 [2020-12-23 09:42:33,252 INFO L226 Difference]: Without dead ends: 5356 [2020-12-23 09:42:33,255 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 09:42:33,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5356 states. [2020-12-23 09:42:33,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5356 to 2452. [2020-12-23 09:42:33,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2452 states. [2020-12-23 09:42:33,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3914 transitions. [2020-12-23 09:42:33,407 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3914 transitions. Word has length 69 [2020-12-23 09:42:33,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:33,407 INFO L481 AbstractCegarLoop]: Abstraction has 2452 states and 3914 transitions. [2020-12-23 09:42:33,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:42:33,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3914 transitions. [2020-12-23 09:42:33,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 09:42:33,411 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:33,411 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 09:42:33,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:42:33,411 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:33,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:33,412 INFO L82 PathProgramCache]: Analyzing trace with hash -577605759, now seen corresponding path program 1 times [2020-12-23 09:42:33,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:33,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514623656] [2020-12-23 09:42:33,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:33,505 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 09:42:33,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514623656] [2020-12-23 09:42:33,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:33,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:42:33,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092722044] [2020-12-23 09:42:33,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:42:33,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:33,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:42:33,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:42:33,511 INFO L87 Difference]: Start difference. First operand 2452 states and 3914 transitions. Second operand 4 states. [2020-12-23 09:42:33,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:33,780 INFO L93 Difference]: Finished difference Result 7943 states and 12835 transitions. [2020-12-23 09:42:33,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:42:33,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-12-23 09:42:33,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:33,813 INFO L225 Difference]: With dead ends: 7943 [2020-12-23 09:42:33,813 INFO L226 Difference]: Without dead ends: 5570 [2020-12-23 09:42:33,822 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 09:42:33,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states. [2020-12-23 09:42:34,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 3992. [2020-12-23 09:42:34,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3992 states. [2020-12-23 09:42:34,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 6384 transitions. [2020-12-23 09:42:34,106 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 6384 transitions. Word has length 70 [2020-12-23 09:42:34,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:34,107 INFO L481 AbstractCegarLoop]: Abstraction has 3992 states and 6384 transitions. [2020-12-23 09:42:34,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:42:34,107 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 6384 transitions. [2020-12-23 09:42:34,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 09:42:34,108 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:34,108 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 09:42:34,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:42:34,109 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:34,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:34,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1815229649, now seen corresponding path program 1 times [2020-12-23 09:42:34,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:34,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745198010] [2020-12-23 09:42:34,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:34,236 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 09:42:34,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745198010] [2020-12-23 09:42:34,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:34,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:42:34,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423848294] [2020-12-23 09:42:34,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:42:34,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:34,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:42:34,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:42:34,241 INFO L87 Difference]: Start difference. First operand 3992 states and 6384 transitions. Second operand 4 states. [2020-12-23 09:42:34,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:34,706 INFO L93 Difference]: Finished difference Result 13018 states and 20914 transitions. [2020-12-23 09:42:34,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:42:34,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-23 09:42:34,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:34,778 INFO L225 Difference]: With dead ends: 13018 [2020-12-23 09:42:34,779 INFO L226 Difference]: Without dead ends: 9105 [2020-12-23 09:42:34,787 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 09:42:34,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9105 states. [2020-12-23 09:42:35,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9105 to 6388. [2020-12-23 09:42:35,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6388 states. [2020-12-23 09:42:35,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6388 states to 6388 states and 10164 transitions. [2020-12-23 09:42:35,145 INFO L78 Accepts]: Start accepts. Automaton has 6388 states and 10164 transitions. Word has length 71 [2020-12-23 09:42:35,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:35,145 INFO L481 AbstractCegarLoop]: Abstraction has 6388 states and 10164 transitions. [2020-12-23 09:42:35,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:42:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 6388 states and 10164 transitions. [2020-12-23 09:42:35,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 09:42:35,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:35,147 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 09:42:35,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:42:35,147 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:35,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:35,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1147279688, now seen corresponding path program 1 times [2020-12-23 09:42:35,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:35,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381769849] [2020-12-23 09:42:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:35,271 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 09:42:35,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381769849] [2020-12-23 09:42:35,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:35,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:42:35,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287009253] [2020-12-23 09:42:35,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:42:35,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:35,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:42:35,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:42:35,273 INFO L87 Difference]: Start difference. First operand 6388 states and 10164 transitions. Second operand 4 states. [2020-12-23 09:42:35,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:35,854 INFO L93 Difference]: Finished difference Result 20047 states and 32019 transitions. [2020-12-23 09:42:35,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:42:35,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-12-23 09:42:35,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:35,891 INFO L225 Difference]: With dead ends: 20047 [2020-12-23 09:42:35,891 INFO L226 Difference]: Without dead ends: 13738 [2020-12-23 09:42:35,901 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 09:42:35,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13738 states. [2020-12-23 09:42:36,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13738 to 10020. [2020-12-23 09:42:36,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10020 states. [2020-12-23 09:42:36,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10020 states to 10020 states and 15856 transitions. [2020-12-23 09:42:36,508 INFO L78 Accepts]: Start accepts. Automaton has 10020 states and 15856 transitions. Word has length 72 [2020-12-23 09:42:36,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:36,509 INFO L481 AbstractCegarLoop]: Abstraction has 10020 states and 15856 transitions. [2020-12-23 09:42:36,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:42:36,509 INFO L276 IsEmpty]: Start isEmpty. Operand 10020 states and 15856 transitions. [2020-12-23 09:42:36,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 09:42:36,510 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:36,510 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 09:42:36,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:42:36,510 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:36,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:36,511 INFO L82 PathProgramCache]: Analyzing trace with hash -856706640, now seen corresponding path program 1 times [2020-12-23 09:42:36,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:36,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110493433] [2020-12-23 09:42:36,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:36,713 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 09:42:36,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110493433] [2020-12-23 09:42:36,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:36,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:42:36,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922272110] [2020-12-23 09:42:36,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:42:36,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:36,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:42:36,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:42:36,718 INFO L87 Difference]: Start difference. First operand 10020 states and 15856 transitions. Second operand 4 states. [2020-12-23 09:42:37,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:37,543 INFO L93 Difference]: Finished difference Result 29688 states and 46962 transitions. [2020-12-23 09:42:37,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:42:37,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-12-23 09:42:37,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:37,593 INFO L225 Difference]: With dead ends: 29688 [2020-12-23 09:42:37,593 INFO L226 Difference]: Without dead ends: 19677 [2020-12-23 09:42:37,609 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 09:42:37,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19677 states. [2020-12-23 09:42:38,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19677 to 19675. [2020-12-23 09:42:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19675 states. [2020-12-23 09:42:38,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19675 states to 19675 states and 30894 transitions. [2020-12-23 09:42:38,698 INFO L78 Accepts]: Start accepts. Automaton has 19675 states and 30894 transitions. Word has length 74 [2020-12-23 09:42:38,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:38,698 INFO L481 AbstractCegarLoop]: Abstraction has 19675 states and 30894 transitions. [2020-12-23 09:42:38,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:42:38,698 INFO L276 IsEmpty]: Start isEmpty. Operand 19675 states and 30894 transitions. [2020-12-23 09:42:38,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 09:42:38,700 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:38,700 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 09:42:38,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:42:38,701 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:38,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:38,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1857988380, now seen corresponding path program 1 times [2020-12-23 09:42:38,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:38,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452062713] [2020-12-23 09:42:38,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:38,749 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 09:42:38,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452062713] [2020-12-23 09:42:38,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:38,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:42:38,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928717604] [2020-12-23 09:42:38,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:42:38,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:38,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:42:38,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:42:38,752 INFO L87 Difference]: Start difference. First operand 19675 states and 30894 transitions. Second operand 3 states. [2020-12-23 09:42:40,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:40,492 INFO L93 Difference]: Finished difference Result 58987 states and 92620 transitions. [2020-12-23 09:42:40,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:42:40,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-23 09:42:40,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:40,643 INFO L225 Difference]: With dead ends: 58987 [2020-12-23 09:42:40,644 INFO L226 Difference]: Without dead ends: 39340 [2020-12-23 09:42:40,680 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 09:42:40,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39340 states. [2020-12-23 09:42:42,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39340 to 19677. [2020-12-23 09:42:42,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19677 states. [2020-12-23 09:42:42,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19677 states to 19677 states and 30896 transitions. [2020-12-23 09:42:42,197 INFO L78 Accepts]: Start accepts. Automaton has 19677 states and 30896 transitions. Word has length 75 [2020-12-23 09:42:42,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:42,197 INFO L481 AbstractCegarLoop]: Abstraction has 19677 states and 30896 transitions. [2020-12-23 09:42:42,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:42:42,197 INFO L276 IsEmpty]: Start isEmpty. Operand 19677 states and 30896 transitions. [2020-12-23 09:42:42,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 09:42:42,199 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:42,199 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 09:42:42,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:42:42,200 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:42,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:42,201 INFO L82 PathProgramCache]: Analyzing trace with hash 424514133, now seen corresponding path program 1 times [2020-12-23 09:42:42,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:42,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476009830] [2020-12-23 09:42:42,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:42,411 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 09:42:42,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476009830] [2020-12-23 09:42:42,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:42,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:42:42,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931703266] [2020-12-23 09:42:42,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:42:42,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:42,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:42:42,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:42:42,414 INFO L87 Difference]: Start difference. First operand 19677 states and 30896 transitions. Second operand 4 states. [2020-12-23 09:42:43,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:43,977 INFO L93 Difference]: Finished difference Result 58291 states and 91488 transitions. [2020-12-23 09:42:43,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:42:43,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-12-23 09:42:43,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:44,149 INFO L225 Difference]: With dead ends: 58291 [2020-12-23 09:42:44,149 INFO L226 Difference]: Without dead ends: 38626 [2020-12-23 09:42:44,195 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 09:42:44,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38626 states. [2020-12-23 09:42:45,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38626 to 38624. [2020-12-23 09:42:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38624 states. [2020-12-23 09:42:46,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38624 states to 38624 states and 60157 transitions. [2020-12-23 09:42:46,027 INFO L78 Accepts]: Start accepts. Automaton has 38624 states and 60157 transitions. Word has length 76 [2020-12-23 09:42:46,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:46,028 INFO L481 AbstractCegarLoop]: Abstraction has 38624 states and 60157 transitions. [2020-12-23 09:42:46,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:42:46,028 INFO L276 IsEmpty]: Start isEmpty. Operand 38624 states and 60157 transitions. [2020-12-23 09:42:46,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 09:42:46,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:46,030 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 09:42:46,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:42:46,031 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:46,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:46,032 INFO L82 PathProgramCache]: Analyzing trace with hash 551656516, now seen corresponding path program 1 times [2020-12-23 09:42:46,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:46,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283614559] [2020-12-23 09:42:46,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:46,148 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 09:42:46,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283614559] [2020-12-23 09:42:46,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:46,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:42:46,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997124575] [2020-12-23 09:42:46,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:42:46,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:46,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:42:46,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:42:46,152 INFO L87 Difference]: Start difference. First operand 38624 states and 60157 transitions. Second operand 4 states. [2020-12-23 09:42:49,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:49,244 INFO L93 Difference]: Finished difference Result 114364 states and 178019 transitions. [2020-12-23 09:42:49,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:42:49,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-12-23 09:42:49,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:49,511 INFO L225 Difference]: With dead ends: 114364 [2020-12-23 09:42:49,511 INFO L226 Difference]: Without dead ends: 75786 [2020-12-23 09:42:49,594 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 09:42:49,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75786 states. [2020-12-23 09:42:53,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75786 to 75784. [2020-12-23 09:42:53,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75784 states. [2020-12-23 09:42:53,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75784 states to 75784 states and 117031 transitions. [2020-12-23 09:42:53,316 INFO L78 Accepts]: Start accepts. Automaton has 75784 states and 117031 transitions. Word has length 76 [2020-12-23 09:42:53,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:53,316 INFO L481 AbstractCegarLoop]: Abstraction has 75784 states and 117031 transitions. [2020-12-23 09:42:53,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:42:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand 75784 states and 117031 transitions. [2020-12-23 09:42:53,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 09:42:53,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:53,319 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 09:42:53,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:42:53,319 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:53,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:53,320 INFO L82 PathProgramCache]: Analyzing trace with hash -656359944, now seen corresponding path program 1 times [2020-12-23 09:42:53,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:53,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003026526] [2020-12-23 09:42:53,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:53,360 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 09:42:53,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003026526] [2020-12-23 09:42:53,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:53,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:42:53,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746519566] [2020-12-23 09:42:53,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:42:53,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:53,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:42:53,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:42:53,363 INFO L87 Difference]: Start difference. First operand 75784 states and 117031 transitions. Second operand 3 states. [2020-12-23 09:42:59,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:42:59,489 INFO L93 Difference]: Finished difference Result 227228 states and 350901 transitions. [2020-12-23 09:42:59,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:42:59,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-23 09:42:59,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:42:59,873 INFO L225 Difference]: With dead ends: 227228 [2020-12-23 09:42:59,874 INFO L226 Difference]: Without dead ends: 151518 [2020-12-23 09:42:59,975 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 09:43:00,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151518 states. [2020-12-23 09:43:04,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151518 to 75792. [2020-12-23 09:43:04,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75792 states. [2020-12-23 09:43:04,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75792 states to 75792 states and 117039 transitions. [2020-12-23 09:43:04,788 INFO L78 Accepts]: Start accepts. Automaton has 75792 states and 117039 transitions. Word has length 77 [2020-12-23 09:43:04,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:04,788 INFO L481 AbstractCegarLoop]: Abstraction has 75792 states and 117039 transitions. [2020-12-23 09:43:04,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:43:04,788 INFO L276 IsEmpty]: Start isEmpty. Operand 75792 states and 117039 transitions. [2020-12-23 09:43:04,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 09:43:04,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:04,791 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 09:43:04,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 09:43:04,791 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:04,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:04,792 INFO L82 PathProgramCache]: Analyzing trace with hash 834408617, now seen corresponding path program 1 times [2020-12-23 09:43:04,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:04,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009378695] [2020-12-23 09:43:04,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:04,903 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 09:43:04,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009378695] [2020-12-23 09:43:04,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:04,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:43:04,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781090597] [2020-12-23 09:43:04,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:43:04,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:04,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:43:04,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:43:04,906 INFO L87 Difference]: Start difference. First operand 75792 states and 117039 transitions. Second operand 4 states. [2020-12-23 09:43:10,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:10,990 INFO L93 Difference]: Finished difference Result 224404 states and 346298 transitions. [2020-12-23 09:43:10,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:43:10,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-23 09:43:10,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:11,362 INFO L225 Difference]: With dead ends: 224404 [2020-12-23 09:43:11,362 INFO L226 Difference]: Without dead ends: 148667 [2020-12-23 09:43:11,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:43:11,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148667 states. [2020-12-23 09:43:18,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148667 to 148665. [2020-12-23 09:43:18,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148665 states. [2020-12-23 09:43:18,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148665 states to 148665 states and 227541 transitions. [2020-12-23 09:43:18,889 INFO L78 Accepts]: Start accepts. Automaton has 148665 states and 227541 transitions. Word has length 78 [2020-12-23 09:43:18,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:18,890 INFO L481 AbstractCegarLoop]: Abstraction has 148665 states and 227541 transitions. [2020-12-23 09:43:18,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:43:18,890 INFO L276 IsEmpty]: Start isEmpty. Operand 148665 states and 227541 transitions. [2020-12-23 09:43:18,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 09:43:18,893 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:18,893 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 09:43:18,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 09:43:18,893 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:18,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:18,894 INFO L82 PathProgramCache]: Analyzing trace with hash 640680152, now seen corresponding path program 1 times [2020-12-23 09:43:18,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:18,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366270422] [2020-12-23 09:43:18,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:19,341 WARN L197 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2020-12-23 09:43:19,359 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 09:43:19,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366270422] [2020-12-23 09:43:19,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:19,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:43:19,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938283901] [2020-12-23 09:43:19,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:43:19,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:19,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:43:19,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:43:19,362 INFO L87 Difference]: Start difference. First operand 148665 states and 227541 transitions. Second operand 4 states. [2020-12-23 09:43:31,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:43:31,151 INFO L93 Difference]: Finished difference Result 440021 states and 672927 transitions. [2020-12-23 09:43:31,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:43:31,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-23 09:43:31,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:43:31,705 INFO L225 Difference]: With dead ends: 440021 [2020-12-23 09:43:31,706 INFO L226 Difference]: Without dead ends: 291515 [2020-12-23 09:43:32,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:43:32,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291515 states. [2020-12-23 09:43:45,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291515 to 291513. [2020-12-23 09:43:45,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291513 states. [2020-12-23 09:43:46,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291513 states to 291513 states and 442037 transitions. [2020-12-23 09:43:46,919 INFO L78 Accepts]: Start accepts. Automaton has 291513 states and 442037 transitions. Word has length 78 [2020-12-23 09:43:46,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:43:46,920 INFO L481 AbstractCegarLoop]: Abstraction has 291513 states and 442037 transitions. [2020-12-23 09:43:46,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:43:46,920 INFO L276 IsEmpty]: Start isEmpty. Operand 291513 states and 442037 transitions. [2020-12-23 09:43:46,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 09:43:46,940 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:43:46,940 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 09:43:46,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 09:43:46,942 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:43:46,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:43:46,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1890599668, now seen corresponding path program 1 times [2020-12-23 09:43:46,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:43:46,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158788280] [2020-12-23 09:43:46,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:43:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:43:46,996 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 09:43:46,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158788280] [2020-12-23 09:43:46,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:43:46,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:43:46,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567797504] [2020-12-23 09:43:46,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:43:46,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:43:47,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:43:47,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:43:47,002 INFO L87 Difference]: Start difference. First operand 291513 states and 442037 transitions. Second operand 3 states. [2020-12-23 09:44:11,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:44:11,058 INFO L93 Difference]: Finished difference Result 873245 states and 1324519 transitions. [2020-12-23 09:44:11,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:44:11,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-23 09:44:11,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:44:12,537 INFO L225 Difference]: With dead ends: 873245 [2020-12-23 09:44:12,537 INFO L226 Difference]: Without dead ends: 582795 [2020-12-23 09:44:12,860 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 09:44:13,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582795 states. [2020-12-23 09:44:30,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582795 to 291545. [2020-12-23 09:44:30,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291545 states. [2020-12-23 09:44:31,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291545 states to 291545 states and 442069 transitions. [2020-12-23 09:44:31,635 INFO L78 Accepts]: Start accepts. Automaton has 291545 states and 442069 transitions. Word has length 79 [2020-12-23 09:44:31,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:44:31,636 INFO L481 AbstractCegarLoop]: Abstraction has 291545 states and 442069 transitions. [2020-12-23 09:44:31,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:44:31,636 INFO L276 IsEmpty]: Start isEmpty. Operand 291545 states and 442069 transitions. [2020-12-23 09:44:31,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 09:44:31,663 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:44:31,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:44:31,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 09:44:31,664 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:44:31,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:44:31,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1453451011, now seen corresponding path program 1 times [2020-12-23 09:44:31,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:44:31,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878355307] [2020-12-23 09:44:31,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:44:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:44:31,874 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 09:44:31,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878355307] [2020-12-23 09:44:31,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:44:31,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:44:31,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871160458] [2020-12-23 09:44:31,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:44:31,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:44:31,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:44:31,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:44:31,876 INFO L87 Difference]: Start difference. First operand 291545 states and 442069 transitions. Second operand 4 states. [2020-12-23 09:45:01,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:45:01,719 INFO L93 Difference]: Finished difference Result 862768 states and 1306995 transitions. [2020-12-23 09:45:01,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:45:01,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-12-23 09:45:01,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:45:02,986 INFO L225 Difference]: With dead ends: 862768 [2020-12-23 09:45:02,986 INFO L226 Difference]: Without dead ends: 571474 [2020-12-23 09:45:03,281 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 09:45:04,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571474 states. [2020-12-23 09:45:37,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571474 to 571472. [2020-12-23 09:45:37,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571472 states. [2020-12-23 09:45:39,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571472 states to 571472 states and 858117 transitions. [2020-12-23 09:45:39,623 INFO L78 Accepts]: Start accepts. Automaton has 571472 states and 858117 transitions. Word has length 80 [2020-12-23 09:45:39,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:45:39,623 INFO L481 AbstractCegarLoop]: Abstraction has 571472 states and 858117 transitions. [2020-12-23 09:45:39,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:45:39,624 INFO L276 IsEmpty]: Start isEmpty. Operand 571472 states and 858117 transitions. [2020-12-23 09:45:39,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 09:45:39,652 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:45:39,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:45:39,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 09:45:39,653 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:45:39,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:45:39,656 INFO L82 PathProgramCache]: Analyzing trace with hash -194781332, now seen corresponding path program 1 times [2020-12-23 09:45:39,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:45:39,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980485599] [2020-12-23 09:45:39,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:45:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:45:39,765 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 09:45:39,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980485599] [2020-12-23 09:45:39,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:45:39,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:45:39,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100945806] [2020-12-23 09:45:39,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:45:39,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:45:39,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:45:39,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:45:39,768 INFO L87 Difference]: Start difference. First operand 571472 states and 858117 transitions. Second operand 4 states.