/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.3.1.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:40:14,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:40:14,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:40:14,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:40:14,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:40:14,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:40:14,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:40:14,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:40:14,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:40:14,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:40:14,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:40:14,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:40:14,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:40:14,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:40:14,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:40:14,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:40:14,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:40:14,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:40:14,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:40:14,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:40:14,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:40:14,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:40:14,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:40:14,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:40:14,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:40:14,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:40:14,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:40:14,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:40:14,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:40:14,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:40:14,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:40:14,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:40:14,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:40:14,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:40:14,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:40:14,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:40:14,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:40:14,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:40:14,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:40:14,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:40:14,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:40:14,790 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 09:40:14,828 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:40:14,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:40:14,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:40:14,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:40:14,830 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:40:14,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:40:14,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:40:14,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:40:14,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:40:14,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:40:14,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:40:14,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:40:14,832 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:40:14,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:40:14,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:40:14,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:40:14,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:40:14,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:40:14,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:40:14,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:40:14,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:40:14,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:40:14,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:40:14,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:40:14,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:40:14,835 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:40:15,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:40:15,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:40:15,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:40:15,294 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:40:15,295 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:40:15,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-12-23 09:40:15,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b6e124b1e/fe66d44104a644a4b0706d8e7914c4a0/FLAGf8bd91c8d [2020-12-23 09:40:16,081 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:40:16,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-12-23 09:40:16,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b6e124b1e/fe66d44104a644a4b0706d8e7914c4a0/FLAGf8bd91c8d [2020-12-23 09:40:16,346 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b6e124b1e/fe66d44104a644a4b0706d8e7914c4a0 [2020-12-23 09:40:16,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:40:16,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:40:16,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:40:16,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:40:16,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:40:16,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:40:16" (1/1) ... [2020-12-23 09:40:16,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d70183c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:16, skipping insertion in model container [2020-12-23 09:40:16,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:40:16" (1/1) ... [2020-12-23 09:40:16,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:40:16,407 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r121~0,] left hand side expression in assignment: lhs: VariableLHS[~r131~0,] left hand side expression in assignment: lhs: VariableLHS[~r211~0,] left hand side expression in assignment: lhs: VariableLHS[~r231~0,] left hand side expression in assignment: lhs: VariableLHS[~r311~0,] left hand side expression in assignment: lhs: VariableLHS[~r321~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~r122~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~r132~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~r212~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~r232~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~r312~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~r322~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~ep12~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep13~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep21~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep23~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep31~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep32~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:40:16,674 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.3.1.ufo.BOUNDED-6.pals.c[11348,11361] [2020-12-23 09:40:16,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:40:16,691 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r121~0,] left hand side expression in assignment: lhs: VariableLHS[~r131~0,] left hand side expression in assignment: lhs: VariableLHS[~r211~0,] left hand side expression in assignment: lhs: VariableLHS[~r231~0,] left hand side expression in assignment: lhs: VariableLHS[~r311~0,] left hand side expression in assignment: lhs: VariableLHS[~r321~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~r122~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~r132~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~r212~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~r232~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~r312~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~r322~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~ep12~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep13~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep21~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep23~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep31~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep32~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:40:16,772 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.3.1.ufo.BOUNDED-6.pals.c[11348,11361] [2020-12-23 09:40:16,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:40:16,804 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:40:16,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:16 WrapperNode [2020-12-23 09:40:16,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:40:16,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:40:16,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:40:16,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:40:16,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:16" (1/1) ... [2020-12-23 09:40:16,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:16" (1/1) ... [2020-12-23 09:40:16,892 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:40:16,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:40:16,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:40:16,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:40:16,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:16" (1/1) ... [2020-12-23 09:40:16,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:16" (1/1) ... [2020-12-23 09:40:16,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:16" (1/1) ... [2020-12-23 09:40:16,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:16" (1/1) ... [2020-12-23 09:40:16,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:16" (1/1) ... [2020-12-23 09:40:16,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:16" (1/1) ... [2020-12-23 09:40:16,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:16" (1/1) ... [2020-12-23 09:40:16,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:40:16,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:40:16,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:40:16,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:40:16,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:40:17,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:40:17,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:40:17,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:40:17,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:40:18,100 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:40:18,101 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-23 09:40:18,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:40:18 BoogieIcfgContainer [2020-12-23 09:40:18,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:40:18,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:40:18,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:40:18,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:40:18,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:40:16" (1/3) ... [2020-12-23 09:40:18,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be050df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:40:18, skipping insertion in model container [2020-12-23 09:40:18,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:40:16" (2/3) ... [2020-12-23 09:40:18,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be050df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:40:18, skipping insertion in model container [2020-12-23 09:40:18,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:40:18" (3/3) ... [2020-12-23 09:40:18,113 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-12-23 09:40:18,120 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:40:18,126 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 09:40:18,146 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 09:40:18,176 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:40:18,176 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:40:18,177 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:40:18,177 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:40:18,177 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:40:18,177 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:40:18,177 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:40:18,177 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:40:18,197 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2020-12-23 09:40:18,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 09:40:18,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:18,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:18,208 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:18,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:18,216 INFO L82 PathProgramCache]: Analyzing trace with hash 632685314, now seen corresponding path program 1 times [2020-12-23 09:40:18,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:18,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398697740] [2020-12-23 09:40:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:18,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:18,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398697740] [2020-12-23 09:40:18,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:18,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:40:18,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166181803] [2020-12-23 09:40:18,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 09:40:18,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:18,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 09:40:18,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 09:40:18,517 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 2 states. [2020-12-23 09:40:18,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:18,550 INFO L93 Difference]: Finished difference Result 200 states and 340 transitions. [2020-12-23 09:40:18,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 09:40:18,552 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2020-12-23 09:40:18,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:18,566 INFO L225 Difference]: With dead ends: 200 [2020-12-23 09:40:18,566 INFO L226 Difference]: Without dead ends: 121 [2020-12-23 09:40:18,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 09:40:18,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-12-23 09:40:18,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-12-23 09:40:18,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-12-23 09:40:18,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 208 transitions. [2020-12-23 09:40:18,626 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 208 transitions. Word has length 37 [2020-12-23 09:40:18,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:18,626 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 208 transitions. [2020-12-23 09:40:18,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 09:40:18,627 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 208 transitions. [2020-12-23 09:40:18,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 09:40:18,630 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:18,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:18,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:40:18,631 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:18,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:18,632 INFO L82 PathProgramCache]: Analyzing trace with hash -184963136, now seen corresponding path program 1 times [2020-12-23 09:40:18,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:18,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041312336] [2020-12-23 09:40:18,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:18,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:18,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041312336] [2020-12-23 09:40:18,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:18,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:40:18,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403068093] [2020-12-23 09:40:18,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:40:18,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:18,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:40:18,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:40:18,886 INFO L87 Difference]: Start difference. First operand 121 states and 208 transitions. Second operand 5 states. [2020-12-23 09:40:19,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:19,005 INFO L93 Difference]: Finished difference Result 265 states and 448 transitions. [2020-12-23 09:40:19,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:40:19,006 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-12-23 09:40:19,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:19,008 INFO L225 Difference]: With dead ends: 265 [2020-12-23 09:40:19,009 INFO L226 Difference]: Without dead ends: 191 [2020-12-23 09:40:19,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:40:19,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-12-23 09:40:19,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 121. [2020-12-23 09:40:19,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-12-23 09:40:19,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 187 transitions. [2020-12-23 09:40:19,023 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 187 transitions. Word has length 37 [2020-12-23 09:40:19,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:19,023 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 187 transitions. [2020-12-23 09:40:19,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:40:19,024 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 187 transitions. [2020-12-23 09:40:19,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-23 09:40:19,026 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:19,026 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] [2020-12-23 09:40:19,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:40:19,027 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:19,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:19,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1843152740, now seen corresponding path program 1 times [2020-12-23 09:40:19,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:19,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458943639] [2020-12-23 09:40:19,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:19,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458943639] [2020-12-23 09:40:19,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:19,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:40:19,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152826217] [2020-12-23 09:40:19,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:40:19,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:19,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:40:19,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:19,159 INFO L87 Difference]: Start difference. First operand 121 states and 187 transitions. Second operand 3 states. [2020-12-23 09:40:19,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:19,222 INFO L93 Difference]: Finished difference Result 252 states and 406 transitions. [2020-12-23 09:40:19,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:40:19,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-23 09:40:19,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:19,225 INFO L225 Difference]: With dead ends: 252 [2020-12-23 09:40:19,225 INFO L226 Difference]: Without dead ends: 182 [2020-12-23 09:40:19,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:19,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-12-23 09:40:19,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2020-12-23 09:40:19,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-12-23 09:40:19,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 282 transitions. [2020-12-23 09:40:19,250 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 282 transitions. Word has length 57 [2020-12-23 09:40:19,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:19,253 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 282 transitions. [2020-12-23 09:40:19,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:40:19,254 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 282 transitions. [2020-12-23 09:40:19,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-23 09:40:19,257 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:19,258 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] [2020-12-23 09:40:19,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:40:19,258 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:19,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:19,259 INFO L82 PathProgramCache]: Analyzing trace with hash 700379209, now seen corresponding path program 1 times [2020-12-23 09:40:19,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:19,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512687395] [2020-12-23 09:40:19,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:19,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:19,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512687395] [2020-12-23 09:40:19,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:19,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:40:19,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594473836] [2020-12-23 09:40:19,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:40:19,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:19,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:40:19,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:19,410 INFO L87 Difference]: Start difference. First operand 180 states and 282 transitions. Second operand 3 states. [2020-12-23 09:40:19,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:19,432 INFO L93 Difference]: Finished difference Result 307 states and 495 transitions. [2020-12-23 09:40:19,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:40:19,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-23 09:40:19,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:19,434 INFO L225 Difference]: With dead ends: 307 [2020-12-23 09:40:19,435 INFO L226 Difference]: Without dead ends: 237 [2020-12-23 09:40:19,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:19,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-12-23 09:40:19,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 235. [2020-12-23 09:40:19,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-12-23 09:40:19,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 374 transitions. [2020-12-23 09:40:19,469 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 374 transitions. Word has length 59 [2020-12-23 09:40:19,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:19,470 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 374 transitions. [2020-12-23 09:40:19,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:40:19,470 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 374 transitions. [2020-12-23 09:40:19,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-23 09:40:19,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:19,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:19,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:40:19,473 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:19,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:19,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1943315629, now seen corresponding path program 1 times [2020-12-23 09:40:19,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:19,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877108143] [2020-12-23 09:40:19,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:19,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:19,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877108143] [2020-12-23 09:40:19,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:19,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:40:19,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754185975] [2020-12-23 09:40:19,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:40:19,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:19,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:40:19,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:19,546 INFO L87 Difference]: Start difference. First operand 235 states and 374 transitions. Second operand 3 states. [2020-12-23 09:40:19,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:19,588 INFO L93 Difference]: Finished difference Result 578 states and 941 transitions. [2020-12-23 09:40:19,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:40:19,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-23 09:40:19,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:19,594 INFO L225 Difference]: With dead ends: 578 [2020-12-23 09:40:19,594 INFO L226 Difference]: Without dead ends: 396 [2020-12-23 09:40:19,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:19,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-12-23 09:40:19,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 394. [2020-12-23 09:40:19,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-12-23 09:40:19,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 634 transitions. [2020-12-23 09:40:19,640 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 634 transitions. Word has length 59 [2020-12-23 09:40:19,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:19,641 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 634 transitions. [2020-12-23 09:40:19,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:40:19,641 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 634 transitions. [2020-12-23 09:40:19,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-23 09:40:19,648 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:19,669 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] [2020-12-23 09:40:19,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:40:19,670 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:19,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:19,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1342077512, now seen corresponding path program 1 times [2020-12-23 09:40:19,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:19,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887029211] [2020-12-23 09:40:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:19,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887029211] [2020-12-23 09:40:19,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:19,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:40:19,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416263587] [2020-12-23 09:40:19,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:40:19,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:19,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:40:19,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:19,787 INFO L87 Difference]: Start difference. First operand 394 states and 634 transitions. Second operand 3 states. [2020-12-23 09:40:19,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:19,821 INFO L93 Difference]: Finished difference Result 723 states and 1177 transitions. [2020-12-23 09:40:19,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:40:19,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-23 09:40:19,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:19,826 INFO L225 Difference]: With dead ends: 723 [2020-12-23 09:40:19,826 INFO L226 Difference]: Without dead ends: 541 [2020-12-23 09:40:19,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:19,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-12-23 09:40:19,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 539. [2020-12-23 09:40:19,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-12-23 09:40:19,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 869 transitions. [2020-12-23 09:40:19,857 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 869 transitions. Word has length 61 [2020-12-23 09:40:19,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:19,858 INFO L481 AbstractCegarLoop]: Abstraction has 539 states and 869 transitions. [2020-12-23 09:40:19,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:40:19,858 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 869 transitions. [2020-12-23 09:40:19,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-23 09:40:19,860 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:19,860 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] [2020-12-23 09:40:19,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:40:19,861 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:19,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:19,861 INFO L82 PathProgramCache]: Analyzing trace with hash -308214334, now seen corresponding path program 1 times [2020-12-23 09:40:19,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:19,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309067126] [2020-12-23 09:40:19,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:19,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309067126] [2020-12-23 09:40:19,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:19,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:40:19,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708125054] [2020-12-23 09:40:19,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:40:19,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:19,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:40:19,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:19,957 INFO L87 Difference]: Start difference. First operand 539 states and 869 transitions. Second operand 3 states. [2020-12-23 09:40:20,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:20,003 INFO L93 Difference]: Finished difference Result 1428 states and 2320 transitions. [2020-12-23 09:40:20,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:40:20,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-23 09:40:20,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:20,010 INFO L225 Difference]: With dead ends: 1428 [2020-12-23 09:40:20,010 INFO L226 Difference]: Without dead ends: 952 [2020-12-23 09:40:20,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:20,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2020-12-23 09:40:20,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 950. [2020-12-23 09:40:20,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2020-12-23 09:40:20,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1526 transitions. [2020-12-23 09:40:20,061 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1526 transitions. Word has length 61 [2020-12-23 09:40:20,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:20,063 INFO L481 AbstractCegarLoop]: Abstraction has 950 states and 1526 transitions. [2020-12-23 09:40:20,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:40:20,067 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1526 transitions. [2020-12-23 09:40:20,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 09:40:20,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:20,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:20,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:40:20,069 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:20,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:20,070 INFO L82 PathProgramCache]: Analyzing trace with hash 349619889, now seen corresponding path program 1 times [2020-12-23 09:40:20,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:20,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603422186] [2020-12-23 09:40:20,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:20,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:20,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603422186] [2020-12-23 09:40:20,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:20,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:40:20,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453391383] [2020-12-23 09:40:20,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:40:20,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:20,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:40:20,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:40:20,255 INFO L87 Difference]: Start difference. First operand 950 states and 1526 transitions. Second operand 5 states. [2020-12-23 09:40:20,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:20,523 INFO L93 Difference]: Finished difference Result 4661 states and 7632 transitions. [2020-12-23 09:40:20,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:40:20,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-12-23 09:40:20,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:20,546 INFO L225 Difference]: With dead ends: 4661 [2020-12-23 09:40:20,546 INFO L226 Difference]: Without dead ends: 3774 [2020-12-23 09:40:20,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:40:20,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3774 states. [2020-12-23 09:40:20,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3774 to 1770. [2020-12-23 09:40:20,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1770 states. [2020-12-23 09:40:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2844 transitions. [2020-12-23 09:40:20,650 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2844 transitions. Word has length 63 [2020-12-23 09:40:20,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:20,650 INFO L481 AbstractCegarLoop]: Abstraction has 1770 states and 2844 transitions. [2020-12-23 09:40:20,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:40:20,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2844 transitions. [2020-12-23 09:40:20,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 09:40:20,651 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:20,651 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] [2020-12-23 09:40:20,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:40:20,652 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:20,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:20,653 INFO L82 PathProgramCache]: Analyzing trace with hash 325449286, now seen corresponding path program 1 times [2020-12-23 09:40:20,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:20,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808067657] [2020-12-23 09:40:20,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:20,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:20,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808067657] [2020-12-23 09:40:20,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:20,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:40:20,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216623468] [2020-12-23 09:40:20,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:40:20,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:20,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:40:20,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:40:20,746 INFO L87 Difference]: Start difference. First operand 1770 states and 2844 transitions. Second operand 4 states. [2020-12-23 09:40:20,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:20,960 INFO L93 Difference]: Finished difference Result 5679 states and 9231 transitions. [2020-12-23 09:40:20,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:40:20,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-12-23 09:40:20,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:20,982 INFO L225 Difference]: With dead ends: 5679 [2020-12-23 09:40:20,982 INFO L226 Difference]: Without dead ends: 3972 [2020-12-23 09:40:20,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:40:20,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3972 states. [2020-12-23 09:40:21,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3972 to 2858. [2020-12-23 09:40:21,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2858 states. [2020-12-23 09:40:21,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2858 states to 2858 states and 4602 transitions. [2020-12-23 09:40:21,159 INFO L78 Accepts]: Start accepts. Automaton has 2858 states and 4602 transitions. Word has length 64 [2020-12-23 09:40:21,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:21,165 INFO L481 AbstractCegarLoop]: Abstraction has 2858 states and 4602 transitions. [2020-12-23 09:40:21,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:40:21,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2858 states and 4602 transitions. [2020-12-23 09:40:21,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 09:40:21,166 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:21,167 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] [2020-12-23 09:40:21,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:40:21,168 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:21,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:21,168 INFO L82 PathProgramCache]: Analyzing trace with hash 905685231, now seen corresponding path program 1 times [2020-12-23 09:40:21,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:21,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19167193] [2020-12-23 09:40:21,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:21,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19167193] [2020-12-23 09:40:21,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:21,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:40:21,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046137080] [2020-12-23 09:40:21,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:40:21,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:21,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:40:21,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:21,270 INFO L87 Difference]: Start difference. First operand 2858 states and 4602 transitions. Second operand 3 states. [2020-12-23 09:40:21,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:21,431 INFO L93 Difference]: Finished difference Result 5558 states and 8983 transitions. [2020-12-23 09:40:21,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:40:21,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 09:40:21,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:21,460 INFO L225 Difference]: With dead ends: 5558 [2020-12-23 09:40:21,460 INFO L226 Difference]: Without dead ends: 3988 [2020-12-23 09:40:21,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:21,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3988 states. [2020-12-23 09:40:21,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3988 to 3986. [2020-12-23 09:40:21,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3986 states. [2020-12-23 09:40:21,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3986 states to 3986 states and 6378 transitions. [2020-12-23 09:40:21,687 INFO L78 Accepts]: Start accepts. Automaton has 3986 states and 6378 transitions. Word has length 64 [2020-12-23 09:40:21,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:21,688 INFO L481 AbstractCegarLoop]: Abstraction has 3986 states and 6378 transitions. [2020-12-23 09:40:21,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:40:21,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3986 states and 6378 transitions. [2020-12-23 09:40:21,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 09:40:21,691 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:21,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:21,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:40:21,692 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:21,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:21,692 INFO L82 PathProgramCache]: Analyzing trace with hash -254835064, now seen corresponding path program 1 times [2020-12-23 09:40:21,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:21,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795446270] [2020-12-23 09:40:21,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:21,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795446270] [2020-12-23 09:40:21,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:21,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:40:21,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904003456] [2020-12-23 09:40:21,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:40:21,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:21,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:40:21,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:40:21,814 INFO L87 Difference]: Start difference. First operand 3986 states and 6378 transitions. Second operand 4 states. [2020-12-23 09:40:22,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:22,254 INFO L93 Difference]: Finished difference Result 13012 states and 20908 transitions. [2020-12-23 09:40:22,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:40:22,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-23 09:40:22,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:22,326 INFO L225 Difference]: With dead ends: 13012 [2020-12-23 09:40:22,326 INFO L226 Difference]: Without dead ends: 9099 [2020-12-23 09:40:22,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:40:22,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9099 states. [2020-12-23 09:40:22,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9099 to 6382. [2020-12-23 09:40:22,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6382 states. [2020-12-23 09:40:22,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6382 states to 6382 states and 10158 transitions. [2020-12-23 09:40:22,760 INFO L78 Accepts]: Start accepts. Automaton has 6382 states and 10158 transitions. Word has length 65 [2020-12-23 09:40:22,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:22,760 INFO L481 AbstractCegarLoop]: Abstraction has 6382 states and 10158 transitions. [2020-12-23 09:40:22,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:40:22,760 INFO L276 IsEmpty]: Start isEmpty. Operand 6382 states and 10158 transitions. [2020-12-23 09:40:22,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 09:40:22,761 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:22,761 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] [2020-12-23 09:40:22,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:40:22,761 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:22,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:22,764 INFO L82 PathProgramCache]: Analyzing trace with hash -894776387, now seen corresponding path program 1 times [2020-12-23 09:40:22,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:22,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996005694] [2020-12-23 09:40:22,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:22,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996005694] [2020-12-23 09:40:22,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:22,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:40:22,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448697751] [2020-12-23 09:40:22,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:40:22,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:22,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:40:22,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:40:22,835 INFO L87 Difference]: Start difference. First operand 6382 states and 10158 transitions. Second operand 4 states. [2020-12-23 09:40:23,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:23,432 INFO L93 Difference]: Finished difference Result 20041 states and 32013 transitions. [2020-12-23 09:40:23,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:40:23,433 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-23 09:40:23,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:23,466 INFO L225 Difference]: With dead ends: 20041 [2020-12-23 09:40:23,466 INFO L226 Difference]: Without dead ends: 13732 [2020-12-23 09:40:23,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:40:23,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13732 states. [2020-12-23 09:40:24,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13732 to 10014. [2020-12-23 09:40:24,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10014 states. [2020-12-23 09:40:24,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10014 states to 10014 states and 15850 transitions. [2020-12-23 09:40:24,069 INFO L78 Accepts]: Start accepts. Automaton has 10014 states and 15850 transitions. Word has length 66 [2020-12-23 09:40:24,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:24,069 INFO L481 AbstractCegarLoop]: Abstraction has 10014 states and 15850 transitions. [2020-12-23 09:40:24,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:40:24,069 INFO L276 IsEmpty]: Start isEmpty. Operand 10014 states and 15850 transitions. [2020-12-23 09:40:24,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 09:40:24,070 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:24,070 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] [2020-12-23 09:40:24,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:40:24,071 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:24,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:24,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1280795893, now seen corresponding path program 1 times [2020-12-23 09:40:24,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:24,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125575135] [2020-12-23 09:40:24,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:24,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:24,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125575135] [2020-12-23 09:40:24,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:24,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:40:24,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82798567] [2020-12-23 09:40:24,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:40:24,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:24,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:40:24,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:40:24,307 INFO L87 Difference]: Start difference. First operand 10014 states and 15850 transitions. Second operand 4 states. [2020-12-23 09:40:25,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:25,220 INFO L93 Difference]: Finished difference Result 29670 states and 46944 transitions. [2020-12-23 09:40:25,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:40:25,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-12-23 09:40:25,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:25,267 INFO L225 Difference]: With dead ends: 29670 [2020-12-23 09:40:25,267 INFO L226 Difference]: Without dead ends: 19665 [2020-12-23 09:40:25,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:40:25,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19665 states. [2020-12-23 09:40:26,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19665 to 19663. [2020-12-23 09:40:26,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19663 states. [2020-12-23 09:40:26,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19663 states to 19663 states and 30882 transitions. [2020-12-23 09:40:26,312 INFO L78 Accepts]: Start accepts. Automaton has 19663 states and 30882 transitions. Word has length 68 [2020-12-23 09:40:26,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:26,312 INFO L481 AbstractCegarLoop]: Abstraction has 19663 states and 30882 transitions. [2020-12-23 09:40:26,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:40:26,313 INFO L276 IsEmpty]: Start isEmpty. Operand 19663 states and 30882 transitions. [2020-12-23 09:40:26,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 09:40:26,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:26,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:26,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:40:26,315 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:26,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:26,315 INFO L82 PathProgramCache]: Analyzing trace with hash 2079556393, now seen corresponding path program 1 times [2020-12-23 09:40:26,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:26,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111774086] [2020-12-23 09:40:26,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:26,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111774086] [2020-12-23 09:40:26,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:26,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:40:26,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510721712] [2020-12-23 09:40:26,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:40:26,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:26,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:40:26,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:26,350 INFO L87 Difference]: Start difference. First operand 19663 states and 30882 transitions. Second operand 3 states. [2020-12-23 09:40:27,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:27,815 INFO L93 Difference]: Finished difference Result 58951 states and 92584 transitions. [2020-12-23 09:40:27,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:40:27,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-23 09:40:27,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:27,919 INFO L225 Difference]: With dead ends: 58951 [2020-12-23 09:40:27,919 INFO L226 Difference]: Without dead ends: 39316 [2020-12-23 09:40:27,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:27,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39316 states. [2020-12-23 09:40:28,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39316 to 19665. [2020-12-23 09:40:28,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19665 states. [2020-12-23 09:40:28,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19665 states to 19665 states and 30884 transitions. [2020-12-23 09:40:28,945 INFO L78 Accepts]: Start accepts. Automaton has 19665 states and 30884 transitions. Word has length 69 [2020-12-23 09:40:28,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:28,945 INFO L481 AbstractCegarLoop]: Abstraction has 19665 states and 30884 transitions. [2020-12-23 09:40:28,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:40:28,945 INFO L276 IsEmpty]: Start isEmpty. Operand 19665 states and 30884 transitions. [2020-12-23 09:40:28,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 09:40:28,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:28,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:28,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:40:28,947 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:28,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:28,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1570079706, now seen corresponding path program 1 times [2020-12-23 09:40:28,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:28,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428955062] [2020-12-23 09:40:28,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:29,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:29,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428955062] [2020-12-23 09:40:29,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:29,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:40:29,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161466677] [2020-12-23 09:40:29,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:40:29,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:29,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:40:29,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:40:29,035 INFO L87 Difference]: Start difference. First operand 19665 states and 30884 transitions. Second operand 4 states. [2020-12-23 09:40:30,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:30,469 INFO L93 Difference]: Finished difference Result 58255 states and 91452 transitions. [2020-12-23 09:40:30,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:40:30,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-12-23 09:40:30,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:30,570 INFO L225 Difference]: With dead ends: 58255 [2020-12-23 09:40:30,570 INFO L226 Difference]: Without dead ends: 38602 [2020-12-23 09:40:30,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:40:30,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38602 states. [2020-12-23 09:40:32,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38602 to 38600. [2020-12-23 09:40:32,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38600 states. [2020-12-23 09:40:32,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38600 states to 38600 states and 60133 transitions. [2020-12-23 09:40:32,249 INFO L78 Accepts]: Start accepts. Automaton has 38600 states and 60133 transitions. Word has length 70 [2020-12-23 09:40:32,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:32,249 INFO L481 AbstractCegarLoop]: Abstraction has 38600 states and 60133 transitions. [2020-12-23 09:40:32,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:40:32,249 INFO L276 IsEmpty]: Start isEmpty. Operand 38600 states and 60133 transitions. [2020-12-23 09:40:32,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-23 09:40:32,251 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:32,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:32,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:40:32,251 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:32,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:32,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1281478281, now seen corresponding path program 1 times [2020-12-23 09:40:32,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:32,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643756617] [2020-12-23 09:40:32,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:32,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:32,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643756617] [2020-12-23 09:40:32,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:32,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:40:32,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572540827] [2020-12-23 09:40:32,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:40:32,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:32,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:40:32,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:40:32,335 INFO L87 Difference]: Start difference. First operand 38600 states and 60133 transitions. Second operand 4 states. [2020-12-23 09:40:34,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:34,797 INFO L93 Difference]: Finished difference Result 114292 states and 177947 transitions. [2020-12-23 09:40:34,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:40:34,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-12-23 09:40:34,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:34,965 INFO L225 Difference]: With dead ends: 114292 [2020-12-23 09:40:34,965 INFO L226 Difference]: Without dead ends: 75738 [2020-12-23 09:40:34,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:40:35,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75738 states. [2020-12-23 09:40:38,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75738 to 75736. [2020-12-23 09:40:38,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75736 states. [2020-12-23 09:40:38,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75736 states to 75736 states and 116983 transitions. [2020-12-23 09:40:38,362 INFO L78 Accepts]: Start accepts. Automaton has 75736 states and 116983 transitions. Word has length 70 [2020-12-23 09:40:38,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:38,363 INFO L481 AbstractCegarLoop]: Abstraction has 75736 states and 116983 transitions. [2020-12-23 09:40:38,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:40:38,363 INFO L276 IsEmpty]: Start isEmpty. Operand 75736 states and 116983 transitions. [2020-12-23 09:40:38,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 09:40:38,367 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:38,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:38,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:40:38,367 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:38,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:38,368 INFO L82 PathProgramCache]: Analyzing trace with hash 871974717, now seen corresponding path program 1 times [2020-12-23 09:40:38,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:38,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922518454] [2020-12-23 09:40:38,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:38,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:38,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922518454] [2020-12-23 09:40:38,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:38,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:40:38,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961925830] [2020-12-23 09:40:38,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:40:38,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:38,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:40:38,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:38,420 INFO L87 Difference]: Start difference. First operand 75736 states and 116983 transitions. Second operand 3 states. [2020-12-23 09:40:43,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:43,776 INFO L93 Difference]: Finished difference Result 227084 states and 350757 transitions. [2020-12-23 09:40:43,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:40:43,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-23 09:40:43,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:44,094 INFO L225 Difference]: With dead ends: 227084 [2020-12-23 09:40:44,095 INFO L226 Difference]: Without dead ends: 151422 [2020-12-23 09:40:44,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:40:44,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151422 states. [2020-12-23 09:40:48,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151422 to 75744. [2020-12-23 09:40:48,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75744 states. [2020-12-23 09:40:48,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75744 states to 75744 states and 116991 transitions. [2020-12-23 09:40:48,262 INFO L78 Accepts]: Start accepts. Automaton has 75744 states and 116991 transitions. Word has length 71 [2020-12-23 09:40:48,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:40:48,262 INFO L481 AbstractCegarLoop]: Abstraction has 75744 states and 116991 transitions. [2020-12-23 09:40:48,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:40:48,263 INFO L276 IsEmpty]: Start isEmpty. Operand 75744 states and 116991 transitions. [2020-12-23 09:40:48,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 09:40:48,264 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:40:48,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:40:48,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 09:40:48,264 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:40:48,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:40:48,265 INFO L82 PathProgramCache]: Analyzing trace with hash 2113454382, now seen corresponding path program 1 times [2020-12-23 09:40:48,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:40:48,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592926859] [2020-12-23 09:40:48,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:40:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:40:48,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:40:48,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592926859] [2020-12-23 09:40:48,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:40:48,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:40:48,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354365112] [2020-12-23 09:40:48,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:40:48,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:40:48,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:40:48,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:40:48,367 INFO L87 Difference]: Start difference. First operand 75744 states and 116991 transitions. Second operand 4 states. [2020-12-23 09:40:54,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:40:54,098 INFO L93 Difference]: Finished difference Result 224260 states and 346154 transitions. [2020-12-23 09:40:54,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:40:54,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-12-23 09:40:54,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:40:54,484 INFO L225 Difference]: With dead ends: 224260 [2020-12-23 09:40:54,484 INFO L226 Difference]: Without dead ends: 148571 [2020-12-23 09:40:54,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:40:54,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148571 states. [2020-12-23 09:41:00,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148571 to 148569. [2020-12-23 09:41:00,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148569 states. [2020-12-23 09:41:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148569 states to 148569 states and 227445 transitions. [2020-12-23 09:41:01,092 INFO L78 Accepts]: Start accepts. Automaton has 148569 states and 227445 transitions. Word has length 72 [2020-12-23 09:41:01,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:01,093 INFO L481 AbstractCegarLoop]: Abstraction has 148569 states and 227445 transitions. [2020-12-23 09:41:01,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:41:01,093 INFO L276 IsEmpty]: Start isEmpty. Operand 148569 states and 227445 transitions. [2020-12-23 09:41:01,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 09:41:01,096 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:01,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:41:01,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 09:41:01,096 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:01,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:01,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1932276253, now seen corresponding path program 1 times [2020-12-23 09:41:01,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:01,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405936453] [2020-12-23 09:41:01,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:01,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:41:01,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405936453] [2020-12-23 09:41:01,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:01,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:41:01,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369239291] [2020-12-23 09:41:01,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:41:01,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:01,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:41:01,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:41:01,207 INFO L87 Difference]: Start difference. First operand 148569 states and 227445 transitions. Second operand 4 states. [2020-12-23 09:41:12,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:12,558 INFO L93 Difference]: Finished difference Result 439733 states and 672639 transitions. [2020-12-23 09:41:12,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:41:12,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-12-23 09:41:12,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:13,166 INFO L225 Difference]: With dead ends: 439733 [2020-12-23 09:41:13,166 INFO L226 Difference]: Without dead ends: 291323 [2020-12-23 09:41:13,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:41:13,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291323 states. [2020-12-23 09:41:26,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291323 to 291321. [2020-12-23 09:41:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291321 states. [2020-12-23 09:41:27,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291321 states to 291321 states and 441845 transitions. [2020-12-23 09:41:27,765 INFO L78 Accepts]: Start accepts. Automaton has 291321 states and 441845 transitions. Word has length 72 [2020-12-23 09:41:27,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:41:27,766 INFO L481 AbstractCegarLoop]: Abstraction has 291321 states and 441845 transitions. [2020-12-23 09:41:27,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:41:27,766 INFO L276 IsEmpty]: Start isEmpty. Operand 291321 states and 441845 transitions. [2020-12-23 09:41:27,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 09:41:27,772 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:41:27,772 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] [2020-12-23 09:41:27,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 09:41:27,774 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:41:27,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:41:27,775 INFO L82 PathProgramCache]: Analyzing trace with hash 755639633, now seen corresponding path program 1 times [2020-12-23 09:41:27,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:41:27,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963275885] [2020-12-23 09:41:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:41:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:41:27,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:41:27,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963275885] [2020-12-23 09:41:27,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:41:27,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:41:27,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062887282] [2020-12-23 09:41:27,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:41:27,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:41:27,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:41:27,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:41:27,823 INFO L87 Difference]: Start difference. First operand 291321 states and 441845 transitions. Second operand 3 states. [2020-12-23 09:41:51,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:41:51,475 INFO L93 Difference]: Finished difference Result 872765 states and 1324039 transitions. [2020-12-23 09:41:51,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:41:51,476 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-23 09:41:51,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:41:53,102 INFO L225 Difference]: With dead ends: 872765 [2020-12-23 09:41:53,103 INFO L226 Difference]: Without dead ends: 582411 [2020-12-23 09:41:53,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:41:53,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582411 states. [2020-12-23 09:42:11,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582411 to 291353. [2020-12-23 09:42:11,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291353 states. [2020-12-23 09:42:12,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291353 states to 291353 states and 441877 transitions. [2020-12-23 09:42:12,830 INFO L78 Accepts]: Start accepts. Automaton has 291353 states and 441877 transitions. Word has length 73 [2020-12-23 09:42:12,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:42:12,830 INFO L481 AbstractCegarLoop]: Abstraction has 291353 states and 441877 transitions. [2020-12-23 09:42:12,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:42:12,830 INFO L276 IsEmpty]: Start isEmpty. Operand 291353 states and 441877 transitions. [2020-12-23 09:42:12,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 09:42:12,853 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:42:12,853 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 09:42:12,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 09:42:12,853 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:42:12,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:42:12,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1539955972, now seen corresponding path program 1 times [2020-12-23 09:42:12,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:42:12,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659340154] [2020-12-23 09:42:12,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:42:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:42:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:42:13,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659340154] [2020-12-23 09:42:13,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:42:13,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:42:13,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204127134] [2020-12-23 09:42:13,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:42:13,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:42:13,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:42:13,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:42:13,019 INFO L87 Difference]: Start difference. First operand 291353 states and 441877 transitions. Second operand 6 states.