/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:57:03,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:57:03,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:57:03,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:57:03,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:57:03,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:57:03,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:57:03,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:57:03,142 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:57:03,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:57:03,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:57:03,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:57:03,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:57:03,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:57:03,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:57:03,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:57:03,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:57:03,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:57:03,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:57:03,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:57:03,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:57:03,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:57:03,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:57:03,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:57:03,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:57:03,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:57:03,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:57:03,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:57:03,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:57:03,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:57:03,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:57:03,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:57:03,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:57:03,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:57:03,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:57:03,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:57:03,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:57:03,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:57:03,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:57:03,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:57:03,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:57:03,231 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 09:57:03,278 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:57:03,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:57:03,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:57:03,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:57:03,283 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:57:03,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:57:03,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:57:03,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:57:03,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:57:03,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:57:03,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:57:03,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:57:03,286 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:57:03,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:57:03,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:57:03,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:57:03,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:57:03,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:57:03,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:57:03,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:57:03,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:57:03,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:57:03,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:57:03,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:57:03,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:57:03,289 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:57:03,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:57:03,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:57:03,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:57:03,751 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:57:03,751 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:57:03,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.UNBOUNDED.pals.c [2020-12-23 09:57:03,829 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/adcd79845/86a601feae884dcdb33a74b1c649d99d/FLAG714ced4aa [2020-12-23 09:57:04,591 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:57:04,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.UNBOUNDED.pals.c [2020-12-23 09:57:04,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/adcd79845/86a601feae884dcdb33a74b1c649d99d/FLAG714ced4aa [2020-12-23 09:57:04,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/adcd79845/86a601feae884dcdb33a74b1c649d99d [2020-12-23 09:57:04,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:57:04,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:57:04,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:57:04,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:57:04,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:57:04,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:57:04" (1/1) ... [2020-12-23 09:57:04,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5039632b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:57:04, skipping insertion in model container [2020-12-23 09:57:04,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:57:04" (1/1) ... [2020-12-23 09:57:04,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:57:04,927 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m5~0,] left hand side expression in assignment: lhs: VariableLHS[~m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:57:05,189 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.UNBOUNDED.pals.c[11261,11274] [2020-12-23 09:57:05,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:57:05,222 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~m2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~m3~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~m4~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m5~0,] left hand side expression in assignment: lhs: VariableLHS[~m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~c1~0,] [2020-12-23 09:57:05,285 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.UNBOUNDED.pals.c[11261,11274] [2020-12-23 09:57:05,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:57:05,313 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:57:05,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:57:05 WrapperNode [2020-12-23 09:57:05,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:57:05,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:57:05,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:57:05,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:57:05,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:57:05" (1/1) ... [2020-12-23 09:57:05,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:57:05" (1/1) ... [2020-12-23 09:57:05,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:57:05,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:57:05,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:57:05,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:57:05,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:57:05" (1/1) ... [2020-12-23 09:57:05,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:57:05" (1/1) ... [2020-12-23 09:57:05,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:57:05" (1/1) ... [2020-12-23 09:57:05,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:57:05" (1/1) ... [2020-12-23 09:57:05,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:57:05" (1/1) ... [2020-12-23 09:57:05,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:57:05" (1/1) ... [2020-12-23 09:57:05,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:57:05" (1/1) ... [2020-12-23 09:57:05,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:57:05,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:57:05,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:57:05,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:57:05,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:57:05" (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 09:57:05,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:57:05,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:57:05,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:57:05,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:57:06,197 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:57:06,197 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2020-12-23 09:57:06,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:57:06 BoogieIcfgContainer [2020-12-23 09:57:06,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:57:06,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:57:06,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:57:06,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:57:06,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:57:04" (1/3) ... [2020-12-23 09:57:06,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d576c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:57:06, skipping insertion in model container [2020-12-23 09:57:06,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:57:05" (2/3) ... [2020-12-23 09:57:06,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d576c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:57:06, skipping insertion in model container [2020-12-23 09:57:06,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:57:06" (3/3) ... [2020-12-23 09:57:06,219 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c [2020-12-23 09:57:06,228 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:57:06,234 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 09:57:06,263 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 09:57:06,315 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:57:06,316 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:57:06,317 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:57:06,317 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:57:06,318 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:57:06,318 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:57:06,318 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:57:06,318 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:57:06,347 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2020-12-23 09:57:06,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 09:57:06,361 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:06,363 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] [2020-12-23 09:57:06,364 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:06,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:06,372 INFO L82 PathProgramCache]: Analyzing trace with hash -176333024, now seen corresponding path program 1 times [2020-12-23 09:57:06,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:06,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431110046] [2020-12-23 09:57:06,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:06,703 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 09:57:06,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431110046] [2020-12-23 09:57:06,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:57:06,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:57:06,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302478582] [2020-12-23 09:57:06,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 09:57:06,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:06,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 09:57:06,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 09:57:06,730 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 2 states. [2020-12-23 09:57:06,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:06,763 INFO L93 Difference]: Finished difference Result 148 states and 247 transitions. [2020-12-23 09:57:06,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 09:57:06,765 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2020-12-23 09:57:06,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:06,778 INFO L225 Difference]: With dead ends: 148 [2020-12-23 09:57:06,779 INFO L226 Difference]: Without dead ends: 90 [2020-12-23 09:57:06,783 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 09:57:06,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-23 09:57:06,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-12-23 09:57:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-23 09:57:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 152 transitions. [2020-12-23 09:57:06,857 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 152 transitions. Word has length 33 [2020-12-23 09:57:06,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:06,858 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 152 transitions. [2020-12-23 09:57:06,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 09:57:06,858 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 152 transitions. [2020-12-23 09:57:06,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 09:57:06,864 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:06,864 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] [2020-12-23 09:57:06,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:57:06,865 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:06,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:06,868 INFO L82 PathProgramCache]: Analyzing trace with hash -685806114, now seen corresponding path program 1 times [2020-12-23 09:57:06,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:06,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388939745] [2020-12-23 09:57:06,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:07,093 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 09:57:07,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388939745] [2020-12-23 09:57:07,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:57:07,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:57:07,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740826926] [2020-12-23 09:57:07,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:57:07,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:07,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:57:07,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:57:07,100 INFO L87 Difference]: Start difference. First operand 90 states and 152 transitions. Second operand 5 states. [2020-12-23 09:57:07,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:07,265 INFO L93 Difference]: Finished difference Result 147 states and 240 transitions. [2020-12-23 09:57:07,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:57:07,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-12-23 09:57:07,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:07,271 INFO L225 Difference]: With dead ends: 147 [2020-12-23 09:57:07,272 INFO L226 Difference]: Without dead ends: 90 [2020-12-23 09:57:07,273 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 09:57:07,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-23 09:57:07,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-12-23 09:57:07,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-23 09:57:07,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 121 transitions. [2020-12-23 09:57:07,293 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 121 transitions. Word has length 33 [2020-12-23 09:57:07,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:07,293 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 121 transitions. [2020-12-23 09:57:07,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:57:07,294 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 121 transitions. [2020-12-23 09:57:07,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 09:57:07,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:07,303 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 09:57:07,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:57:07,304 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:07,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:07,307 INFO L82 PathProgramCache]: Analyzing trace with hash 803903125, now seen corresponding path program 1 times [2020-12-23 09:57:07,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:07,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760876802] [2020-12-23 09:57:07,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:07,503 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 09:57:07,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760876802] [2020-12-23 09:57:07,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:57:07,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:57:07,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606397544] [2020-12-23 09:57:07,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:57:07,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:07,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:57:07,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:57:07,513 INFO L87 Difference]: Start difference. First operand 90 states and 121 transitions. Second operand 3 states. [2020-12-23 09:57:07,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:07,544 INFO L93 Difference]: Finished difference Result 190 states and 279 transitions. [2020-12-23 09:57:07,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:57:07,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-23 09:57:07,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:07,546 INFO L225 Difference]: With dead ends: 190 [2020-12-23 09:57:07,547 INFO L226 Difference]: Without dead ends: 137 [2020-12-23 09:57:07,547 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 09:57:07,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-12-23 09:57:07,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2020-12-23 09:57:07,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-12-23 09:57:07,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 193 transitions. [2020-12-23 09:57:07,560 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 193 transitions. Word has length 63 [2020-12-23 09:57:07,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:07,561 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 193 transitions. [2020-12-23 09:57:07,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:57:07,561 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 193 transitions. [2020-12-23 09:57:07,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 09:57:07,563 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:07,563 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 09:57:07,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:57:07,563 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:07,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:07,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1136127733, now seen corresponding path program 1 times [2020-12-23 09:57:07,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:07,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667229040] [2020-12-23 09:57:07,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:07,715 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 09:57:07,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667229040] [2020-12-23 09:57:07,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:57:07,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:57:07,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514995790] [2020-12-23 09:57:07,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:57:07,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:07,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:57:07,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:57:07,719 INFO L87 Difference]: Start difference. First operand 135 states and 193 transitions. Second operand 3 states. [2020-12-23 09:57:07,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:07,744 INFO L93 Difference]: Finished difference Result 319 states and 485 transitions. [2020-12-23 09:57:07,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:57:07,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-23 09:57:07,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:07,747 INFO L225 Difference]: With dead ends: 319 [2020-12-23 09:57:07,747 INFO L226 Difference]: Without dead ends: 221 [2020-12-23 09:57:07,749 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 09:57:07,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-12-23 09:57:07,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2020-12-23 09:57:07,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-12-23 09:57:07,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 326 transitions. [2020-12-23 09:57:07,768 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 326 transitions. Word has length 63 [2020-12-23 09:57:07,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:07,769 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 326 transitions. [2020-12-23 09:57:07,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:57:07,769 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 326 transitions. [2020-12-23 09:57:07,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 09:57:07,770 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:07,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:57:07,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:57:07,771 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:07,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:07,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1564554881, now seen corresponding path program 1 times [2020-12-23 09:57:07,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:07,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995919562] [2020-12-23 09:57:07,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:07,973 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 09:57:07,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995919562] [2020-12-23 09:57:07,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:57:07,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:57:07,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595246823] [2020-12-23 09:57:07,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:57:07,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:07,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:57:07,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:57:07,976 INFO L87 Difference]: Start difference. First operand 219 states and 326 transitions. Second operand 7 states. [2020-12-23 09:57:08,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:08,382 INFO L93 Difference]: Finished difference Result 2039 states and 3216 transitions. [2020-12-23 09:57:08,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 09:57:08,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-12-23 09:57:08,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:08,398 INFO L225 Difference]: With dead ends: 2039 [2020-12-23 09:57:08,399 INFO L226 Difference]: Without dead ends: 1857 [2020-12-23 09:57:08,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-12-23 09:57:08,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2020-12-23 09:57:08,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 399. [2020-12-23 09:57:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-12-23 09:57:08,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 606 transitions. [2020-12-23 09:57:08,485 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 606 transitions. Word has length 63 [2020-12-23 09:57:08,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:08,487 INFO L481 AbstractCegarLoop]: Abstraction has 399 states and 606 transitions. [2020-12-23 09:57:08,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:57:08,488 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 606 transitions. [2020-12-23 09:57:08,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 09:57:08,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:08,493 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 09:57:08,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:57:08,494 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:08,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:08,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1117008495, now seen corresponding path program 1 times [2020-12-23 09:57:08,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:08,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157051690] [2020-12-23 09:57:08,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:08,590 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 09:57:08,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157051690] [2020-12-23 09:57:08,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:57:08,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:57:08,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127074595] [2020-12-23 09:57:08,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:57:08,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:08,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:57:08,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:57:08,593 INFO L87 Difference]: Start difference. First operand 399 states and 606 transitions. Second operand 3 states. [2020-12-23 09:57:08,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:08,653 INFO L93 Difference]: Finished difference Result 1079 states and 1668 transitions. [2020-12-23 09:57:08,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:57:08,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-23 09:57:08,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:08,658 INFO L225 Difference]: With dead ends: 1079 [2020-12-23 09:57:08,658 INFO L226 Difference]: Without dead ends: 717 [2020-12-23 09:57:08,660 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 09:57:08,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2020-12-23 09:57:08,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 707. [2020-12-23 09:57:08,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2020-12-23 09:57:08,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1070 transitions. [2020-12-23 09:57:08,700 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1070 transitions. Word has length 65 [2020-12-23 09:57:08,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:08,701 INFO L481 AbstractCegarLoop]: Abstraction has 707 states and 1070 transitions. [2020-12-23 09:57:08,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:57:08,701 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1070 transitions. [2020-12-23 09:57:08,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 09:57:08,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:08,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:57:08,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:57:08,703 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:08,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:08,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1050514983, now seen corresponding path program 1 times [2020-12-23 09:57:08,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:08,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478353216] [2020-12-23 09:57:08,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:08,946 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 09:57:08,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478353216] [2020-12-23 09:57:08,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:57:08,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:57:08,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391363605] [2020-12-23 09:57:08,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:57:08,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:08,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:57:08,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:57:08,950 INFO L87 Difference]: Start difference. First operand 707 states and 1070 transitions. Second operand 7 states. [2020-12-23 09:57:09,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:09,198 INFO L93 Difference]: Finished difference Result 1379 states and 2104 transitions. [2020-12-23 09:57:09,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:57:09,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-12-23 09:57:09,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:09,204 INFO L225 Difference]: With dead ends: 1379 [2020-12-23 09:57:09,204 INFO L226 Difference]: Without dead ends: 709 [2020-12-23 09:57:09,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-23 09:57:09,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-12-23 09:57:09,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 707. [2020-12-23 09:57:09,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2020-12-23 09:57:09,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1062 transitions. [2020-12-23 09:57:09,251 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1062 transitions. Word has length 65 [2020-12-23 09:57:09,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:09,253 INFO L481 AbstractCegarLoop]: Abstraction has 707 states and 1062 transitions. [2020-12-23 09:57:09,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:57:09,253 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1062 transitions. [2020-12-23 09:57:09,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 09:57:09,254 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:09,255 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 09:57:09,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:57:09,255 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:09,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:09,256 INFO L82 PathProgramCache]: Analyzing trace with hash 738399093, now seen corresponding path program 1 times [2020-12-23 09:57:09,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:09,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022700882] [2020-12-23 09:57:09,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:09,328 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 09:57:09,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022700882] [2020-12-23 09:57:09,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:57:09,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:57:09,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008102861] [2020-12-23 09:57:09,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:57:09,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:09,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:57:09,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:57:09,331 INFO L87 Difference]: Start difference. First operand 707 states and 1062 transitions. Second operand 3 states. [2020-12-23 09:57:09,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:09,418 INFO L93 Difference]: Finished difference Result 1951 states and 2952 transitions. [2020-12-23 09:57:09,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:57:09,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-23 09:57:09,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:09,426 INFO L225 Difference]: With dead ends: 1951 [2020-12-23 09:57:09,426 INFO L226 Difference]: Without dead ends: 1281 [2020-12-23 09:57:09,427 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 09:57:09,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-12-23 09:57:09,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1279. [2020-12-23 09:57:09,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-12-23 09:57:09,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1910 transitions. [2020-12-23 09:57:09,511 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1910 transitions. Word has length 65 [2020-12-23 09:57:09,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:09,511 INFO L481 AbstractCegarLoop]: Abstraction has 1279 states and 1910 transitions. [2020-12-23 09:57:09,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:57:09,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1910 transitions. [2020-12-23 09:57:09,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 09:57:09,512 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:09,513 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 09:57:09,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:57:09,513 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:09,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:09,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1985906709, now seen corresponding path program 1 times [2020-12-23 09:57:09,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:09,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020119698] [2020-12-23 09:57:09,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:09,608 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 09:57:09,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020119698] [2020-12-23 09:57:09,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:57:09,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:57:09,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869949441] [2020-12-23 09:57:09,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:57:09,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:09,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:57:09,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:57:09,617 INFO L87 Difference]: Start difference. First operand 1279 states and 1910 transitions. Second operand 3 states. [2020-12-23 09:57:09,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:09,769 INFO L93 Difference]: Finished difference Result 3571 states and 5336 transitions. [2020-12-23 09:57:09,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:57:09,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-23 09:57:09,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:09,783 INFO L225 Difference]: With dead ends: 3571 [2020-12-23 09:57:09,783 INFO L226 Difference]: Without dead ends: 2329 [2020-12-23 09:57:09,786 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 09:57:09,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2020-12-23 09:57:09,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 2327. [2020-12-23 09:57:09,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2327 states. [2020-12-23 09:57:09,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2327 states to 2327 states and 3430 transitions. [2020-12-23 09:57:09,943 INFO L78 Accepts]: Start accepts. Automaton has 2327 states and 3430 transitions. Word has length 65 [2020-12-23 09:57:09,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:09,943 INFO L481 AbstractCegarLoop]: Abstraction has 2327 states and 3430 transitions. [2020-12-23 09:57:09,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:57:09,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2327 states and 3430 transitions. [2020-12-23 09:57:09,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 09:57:09,947 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:09,948 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 09:57:09,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:57:09,948 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:09,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:09,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1379050855, now seen corresponding path program 1 times [2020-12-23 09:57:09,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:09,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010164580] [2020-12-23 09:57:09,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:10,095 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 09:57:10,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010164580] [2020-12-23 09:57:10,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:57:10,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 09:57:10,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795855881] [2020-12-23 09:57:10,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 09:57:10,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:10,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 09:57:10,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:57:10,099 INFO L87 Difference]: Start difference. First operand 2327 states and 3430 transitions. Second operand 8 states. [2020-12-23 09:57:10,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:10,499 INFO L93 Difference]: Finished difference Result 4053 states and 5932 transitions. [2020-12-23 09:57:10,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 09:57:10,502 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-12-23 09:57:10,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:10,532 INFO L225 Difference]: With dead ends: 4053 [2020-12-23 09:57:10,532 INFO L226 Difference]: Without dead ends: 4051 [2020-12-23 09:57:10,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-23 09:57:10,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2020-12-23 09:57:10,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 2423. [2020-12-23 09:57:10,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2423 states. [2020-12-23 09:57:10,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3510 transitions. [2020-12-23 09:57:10,808 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 3510 transitions. Word has length 66 [2020-12-23 09:57:10,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:10,809 INFO L481 AbstractCegarLoop]: Abstraction has 2423 states and 3510 transitions. [2020-12-23 09:57:10,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 09:57:10,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 3510 transitions. [2020-12-23 09:57:10,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 09:57:10,810 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:10,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:57:10,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:57:10,811 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:10,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:10,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1091422096, now seen corresponding path program 1 times [2020-12-23 09:57:10,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:10,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484458701] [2020-12-23 09:57:10,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:10,859 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 09:57:10,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484458701] [2020-12-23 09:57:10,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:57:10,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:57:10,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789465999] [2020-12-23 09:57:10,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:57:10,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:10,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:57:10,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:57:10,862 INFO L87 Difference]: Start difference. First operand 2423 states and 3510 transitions. Second operand 3 states. [2020-12-23 09:57:11,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:11,157 INFO L93 Difference]: Finished difference Result 4862 states and 7100 transitions. [2020-12-23 09:57:11,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:57:11,157 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-23 09:57:11,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:11,176 INFO L225 Difference]: With dead ends: 4862 [2020-12-23 09:57:11,176 INFO L226 Difference]: Without dead ends: 3515 [2020-12-23 09:57:11,179 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 09:57:11,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2020-12-23 09:57:11,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3513. [2020-12-23 09:57:11,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3513 states. [2020-12-23 09:57:11,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 5064 transitions. [2020-12-23 09:57:11,474 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 5064 transitions. Word has length 67 [2020-12-23 09:57:11,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:11,474 INFO L481 AbstractCegarLoop]: Abstraction has 3513 states and 5064 transitions. [2020-12-23 09:57:11,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:57:11,475 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 5064 transitions. [2020-12-23 09:57:11,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 09:57:11,479 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:11,479 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:57:11,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:57:11,479 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:11,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:11,480 INFO L82 PathProgramCache]: Analyzing trace with hash 639422196, now seen corresponding path program 1 times [2020-12-23 09:57:11,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:11,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143807850] [2020-12-23 09:57:11,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:11,591 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-23 09:57:11,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143807850] [2020-12-23 09:57:11,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:57:11,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:57:11,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372155046] [2020-12-23 09:57:11,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:57:11,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:11,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:57:11,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:57:11,594 INFO L87 Difference]: Start difference. First operand 3513 states and 5064 transitions. Second operand 7 states. [2020-12-23 09:57:12,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:12,860 INFO L93 Difference]: Finished difference Result 21589 states and 31166 transitions. [2020-12-23 09:57:12,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:57:12,860 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-12-23 09:57:12,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:12,942 INFO L225 Difference]: With dead ends: 21589 [2020-12-23 09:57:12,942 INFO L226 Difference]: Without dead ends: 18115 [2020-12-23 09:57:12,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:57:12,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18115 states. [2020-12-23 09:57:13,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18115 to 6985. [2020-12-23 09:57:13,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6985 states. [2020-12-23 09:57:13,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6985 states to 6985 states and 10040 transitions. [2020-12-23 09:57:13,667 INFO L78 Accepts]: Start accepts. Automaton has 6985 states and 10040 transitions. Word has length 93 [2020-12-23 09:57:13,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:13,667 INFO L481 AbstractCegarLoop]: Abstraction has 6985 states and 10040 transitions. [2020-12-23 09:57:13,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:57:13,667 INFO L276 IsEmpty]: Start isEmpty. Operand 6985 states and 10040 transitions. [2020-12-23 09:57:13,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 09:57:13,671 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:13,671 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:57:13,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:57:13,672 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:13,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:13,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1886929812, now seen corresponding path program 1 times [2020-12-23 09:57:13,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:13,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728012358] [2020-12-23 09:57:13,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:13,782 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-23 09:57:13,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728012358] [2020-12-23 09:57:13,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:57:13,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:57:13,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376416869] [2020-12-23 09:57:13,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:57:13,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:13,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:57:13,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:57:13,784 INFO L87 Difference]: Start difference. First operand 6985 states and 10040 transitions. Second operand 7 states. [2020-12-23 09:57:15,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:15,365 INFO L93 Difference]: Finished difference Result 25061 states and 36142 transitions. [2020-12-23 09:57:15,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:57:15,366 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-12-23 09:57:15,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:15,419 INFO L225 Difference]: With dead ends: 25061 [2020-12-23 09:57:15,419 INFO L226 Difference]: Without dead ends: 21587 [2020-12-23 09:57:15,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:57:15,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21587 states. [2020-12-23 09:57:16,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21587 to 12201. [2020-12-23 09:57:16,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12201 states. [2020-12-23 09:57:16,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12201 states to 12201 states and 17464 transitions. [2020-12-23 09:57:16,410 INFO L78 Accepts]: Start accepts. Automaton has 12201 states and 17464 transitions. Word has length 93 [2020-12-23 09:57:16,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:16,411 INFO L481 AbstractCegarLoop]: Abstraction has 12201 states and 17464 transitions. [2020-12-23 09:57:16,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:57:16,411 INFO L276 IsEmpty]: Start isEmpty. Operand 12201 states and 17464 transitions. [2020-12-23 09:57:16,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 09:57:16,416 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:16,416 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:57:16,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:57:16,417 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:16,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:16,418 INFO L82 PathProgramCache]: Analyzing trace with hash -938604502, now seen corresponding path program 1 times [2020-12-23 09:57:16,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:16,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557948773] [2020-12-23 09:57:16,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 09:57:16,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557948773] [2020-12-23 09:57:16,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:57:16,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:57:16,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866984873] [2020-12-23 09:57:16,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:57:16,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:16,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:57:16,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:57:16,535 INFO L87 Difference]: Start difference. First operand 12201 states and 17464 transitions. Second operand 7 states. [2020-12-23 09:57:18,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:18,001 INFO L93 Difference]: Finished difference Result 28533 states and 41118 transitions. [2020-12-23 09:57:18,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:57:18,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-12-23 09:57:18,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:18,065 INFO L225 Difference]: With dead ends: 28533 [2020-12-23 09:57:18,065 INFO L226 Difference]: Without dead ends: 25059 [2020-12-23 09:57:18,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:57:18,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25059 states. [2020-12-23 09:57:19,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25059 to 15673. [2020-12-23 09:57:19,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15673 states. [2020-12-23 09:57:19,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15673 states to 15673 states and 22440 transitions. [2020-12-23 09:57:19,267 INFO L78 Accepts]: Start accepts. Automaton has 15673 states and 22440 transitions. Word has length 93 [2020-12-23 09:57:19,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:19,268 INFO L481 AbstractCegarLoop]: Abstraction has 15673 states and 22440 transitions. [2020-12-23 09:57:19,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:57:19,268 INFO L276 IsEmpty]: Start isEmpty. Operand 15673 states and 22440 transitions. [2020-12-23 09:57:19,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-23 09:57:19,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:19,274 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:57:19,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:57:19,274 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:19,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:19,275 INFO L82 PathProgramCache]: Analyzing trace with hash 2120903754, now seen corresponding path program 1 times [2020-12-23 09:57:19,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:19,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819189028] [2020-12-23 09:57:19,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:19,385 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 09:57:19,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819189028] [2020-12-23 09:57:19,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:57:19,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:57:19,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39548002] [2020-12-23 09:57:19,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:57:19,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:19,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:57:19,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:57:19,388 INFO L87 Difference]: Start difference. First operand 15673 states and 22440 transitions. Second operand 7 states. [2020-12-23 09:57:20,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:20,724 INFO L93 Difference]: Finished difference Result 32005 states and 46094 transitions. [2020-12-23 09:57:20,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:57:20,725 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-12-23 09:57:20,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:20,791 INFO L225 Difference]: With dead ends: 32005 [2020-12-23 09:57:20,792 INFO L226 Difference]: Without dead ends: 28531 [2020-12-23 09:57:20,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:57:20,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28531 states. [2020-12-23 09:57:22,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28531 to 19145. [2020-12-23 09:57:22,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19145 states. [2020-12-23 09:57:22,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19145 states to 19145 states and 27416 transitions. [2020-12-23 09:57:22,237 INFO L78 Accepts]: Start accepts. Automaton has 19145 states and 27416 transitions. Word has length 93 [2020-12-23 09:57:22,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:22,238 INFO L481 AbstractCegarLoop]: Abstraction has 19145 states and 27416 transitions. [2020-12-23 09:57:22,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:57:22,238 INFO L276 IsEmpty]: Start isEmpty. Operand 19145 states and 27416 transitions. [2020-12-23 09:57:22,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-23 09:57:22,245 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:22,246 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:57:22,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:57:22,246 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:22,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:22,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1312606543, now seen corresponding path program 1 times [2020-12-23 09:57:22,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:22,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898434870] [2020-12-23 09:57:22,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 09:57:22,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898434870] [2020-12-23 09:57:22,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:57:22,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 09:57:22,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894980846] [2020-12-23 09:57:22,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:57:22,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:22,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:57:22,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:57:22,477 INFO L87 Difference]: Start difference. First operand 19145 states and 27416 transitions. Second operand 7 states. [2020-12-23 09:57:24,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:24,358 INFO L93 Difference]: Finished difference Result 33397 states and 48126 transitions. [2020-12-23 09:57:24,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 09:57:24,359 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-12-23 09:57:24,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:24,416 INFO L225 Difference]: With dead ends: 33397 [2020-12-23 09:57:24,416 INFO L226 Difference]: Without dead ends: 30963 [2020-12-23 09:57:24,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:57:24,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30963 states. [2020-12-23 09:57:25,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30963 to 21577. [2020-12-23 09:57:25,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21577 states. [2020-12-23 09:57:25,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21577 states to 21577 states and 30936 transitions. [2020-12-23 09:57:25,708 INFO L78 Accepts]: Start accepts. Automaton has 21577 states and 30936 transitions. Word has length 95 [2020-12-23 09:57:25,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:25,708 INFO L481 AbstractCegarLoop]: Abstraction has 21577 states and 30936 transitions. [2020-12-23 09:57:25,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:57:25,708 INFO L276 IsEmpty]: Start isEmpty. Operand 21577 states and 30936 transitions. [2020-12-23 09:57:25,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-23 09:57:25,716 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:25,716 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:57:25,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:57:25,717 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:25,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:25,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1044794996, now seen corresponding path program 1 times [2020-12-23 09:57:25,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:25,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819608621] [2020-12-23 09:57:25,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:57:25,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819608621] [2020-12-23 09:57:25,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:57:25,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:57:25,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098689681] [2020-12-23 09:57:25,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:57:25,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:25,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:57:25,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:57:25,774 INFO L87 Difference]: Start difference. First operand 21577 states and 30936 transitions. Second operand 3 states. [2020-12-23 09:57:27,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:27,121 INFO L93 Difference]: Finished difference Result 37418 states and 53853 transitions. [2020-12-23 09:57:27,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:57:27,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-23 09:57:27,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:27,152 INFO L225 Difference]: With dead ends: 37418 [2020-12-23 09:57:27,152 INFO L226 Difference]: Without dead ends: 15880 [2020-12-23 09:57:27,180 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 09:57:27,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15880 states. [2020-12-23 09:57:28,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15880 to 15878. [2020-12-23 09:57:28,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15878 states. [2020-12-23 09:57:28,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15878 states to 15878 states and 22746 transitions. [2020-12-23 09:57:28,246 INFO L78 Accepts]: Start accepts. Automaton has 15878 states and 22746 transitions. Word has length 95 [2020-12-23 09:57:28,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:28,247 INFO L481 AbstractCegarLoop]: Abstraction has 15878 states and 22746 transitions. [2020-12-23 09:57:28,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:57:28,247 INFO L276 IsEmpty]: Start isEmpty. Operand 15878 states and 22746 transitions. [2020-12-23 09:57:28,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-23 09:57:28,252 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:28,253 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:57:28,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 09:57:28,253 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:28,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:28,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1472221374, now seen corresponding path program 1 times [2020-12-23 09:57:28,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:28,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961208342] [2020-12-23 09:57:28,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:28,318 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:57:28,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961208342] [2020-12-23 09:57:28,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:57:28,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:57:28,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373404524] [2020-12-23 09:57:28,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:57:28,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:28,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:57:28,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:57:28,321 INFO L87 Difference]: Start difference. First operand 15878 states and 22746 transitions. Second operand 3 states. [2020-12-23 09:57:28,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:28,794 INFO L93 Difference]: Finished difference Result 23786 states and 34084 transitions. [2020-12-23 09:57:28,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:57:28,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-23 09:57:28,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:28,808 INFO L225 Difference]: With dead ends: 23786 [2020-12-23 09:57:28,808 INFO L226 Difference]: Without dead ends: 7976 [2020-12-23 09:57:28,828 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 09:57:28,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7976 states. [2020-12-23 09:57:29,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7976 to 7974. [2020-12-23 09:57:29,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7974 states. [2020-12-23 09:57:29,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7974 states to 7974 states and 11306 transitions. [2020-12-23 09:57:29,519 INFO L78 Accepts]: Start accepts. Automaton has 7974 states and 11306 transitions. Word has length 96 [2020-12-23 09:57:29,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:29,520 INFO L481 AbstractCegarLoop]: Abstraction has 7974 states and 11306 transitions. [2020-12-23 09:57:29,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:57:29,520 INFO L276 IsEmpty]: Start isEmpty. Operand 7974 states and 11306 transitions. [2020-12-23 09:57:29,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-23 09:57:29,524 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:29,524 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:57:29,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 09:57:29,525 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:29,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:29,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1559340168, now seen corresponding path program 1 times [2020-12-23 09:57:29,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:29,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950701191] [2020-12-23 09:57:29,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:57:29,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950701191] [2020-12-23 09:57:29,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:57:29,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:57:29,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916121533] [2020-12-23 09:57:29,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:57:29,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:29,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:57:29,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:57:29,592 INFO L87 Difference]: Start difference. First operand 7974 states and 11306 transitions. Second operand 3 states. [2020-12-23 09:57:30,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:30,011 INFO L93 Difference]: Finished difference Result 11930 states and 16924 transitions. [2020-12-23 09:57:30,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:57:30,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-23 09:57:30,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:30,018 INFO L225 Difference]: With dead ends: 11930 [2020-12-23 09:57:30,019 INFO L226 Difference]: Without dead ends: 4024 [2020-12-23 09:57:30,031 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 09:57:30,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2020-12-23 09:57:30,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 4022. [2020-12-23 09:57:30,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4022 states. [2020-12-23 09:57:30,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4022 states to 4022 states and 5638 transitions. [2020-12-23 09:57:30,397 INFO L78 Accepts]: Start accepts. Automaton has 4022 states and 5638 transitions. Word has length 96 [2020-12-23 09:57:30,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:30,398 INFO L481 AbstractCegarLoop]: Abstraction has 4022 states and 5638 transitions. [2020-12-23 09:57:30,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:57:30,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4022 states and 5638 transitions. [2020-12-23 09:57:30,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-23 09:57:30,400 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:30,400 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:57:30,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 09:57:30,401 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:30,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:30,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1616351918, now seen corresponding path program 1 times [2020-12-23 09:57:30,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:30,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865601486] [2020-12-23 09:57:30,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:30,625 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:57:30,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865601486] [2020-12-23 09:57:30,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146577140] [2020-12-23 09:57:30,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:57:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:30,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 09:57:30,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:57:31,143 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 09:57:31,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:57:31,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-23 09:57:31,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191877791] [2020-12-23 09:57:31,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 09:57:31,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:31,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 09:57:31,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-12-23 09:57:31,146 INFO L87 Difference]: Start difference. First operand 4022 states and 5638 transitions. Second operand 12 states. [2020-12-23 09:57:36,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:36,030 INFO L93 Difference]: Finished difference Result 28565 states and 39385 transitions. [2020-12-23 09:57:36,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-23 09:57:36,031 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-12-23 09:57:36,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:36,111 INFO L225 Difference]: With dead ends: 28565 [2020-12-23 09:57:36,112 INFO L226 Difference]: Without dead ends: 24611 [2020-12-23 09:57:36,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=525, Invalid=2025, Unknown=0, NotChecked=0, Total=2550 [2020-12-23 09:57:36,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24611 states. [2020-12-23 09:57:37,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24611 to 13689. [2020-12-23 09:57:37,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13689 states. [2020-12-23 09:57:37,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13689 states to 13689 states and 18621 transitions. [2020-12-23 09:57:37,479 INFO L78 Accepts]: Start accepts. Automaton has 13689 states and 18621 transitions. Word has length 96 [2020-12-23 09:57:37,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:37,479 INFO L481 AbstractCegarLoop]: Abstraction has 13689 states and 18621 transitions. [2020-12-23 09:57:37,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 09:57:37,479 INFO L276 IsEmpty]: Start isEmpty. Operand 13689 states and 18621 transitions. [2020-12-23 09:57:37,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-23 09:57:37,483 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:37,484 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:57:37,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:57:37,700 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:37,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:37,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1720158323, now seen corresponding path program 1 times [2020-12-23 09:57:37,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:37,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317667932] [2020-12-23 09:57:37,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:57:38,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317667932] [2020-12-23 09:57:38,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992585477] [2020-12-23 09:57:38,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:57:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:38,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 09:57:38,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:57:38,369 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 09:57:38,709 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:57:38,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:57:38,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-23 09:57:38,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301322238] [2020-12-23 09:57:38,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 09:57:38,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:38,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 09:57:38,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-12-23 09:57:38,712 INFO L87 Difference]: Start difference. First operand 13689 states and 18621 transitions. Second operand 17 states. [2020-12-23 09:57:51,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:51,555 INFO L93 Difference]: Finished difference Result 133696 states and 182309 transitions. [2020-12-23 09:57:51,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-12-23 09:57:51,556 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-12-23 09:57:51,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:51,841 INFO L225 Difference]: With dead ends: 133696 [2020-12-23 09:57:51,842 INFO L226 Difference]: Without dead ends: 120725 [2020-12-23 09:57:51,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 997 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=660, Invalid=3000, Unknown=0, NotChecked=0, Total=3660 [2020-12-23 09:57:51,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120725 states. [2020-12-23 09:57:58,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120725 to 68616. [2020-12-23 09:57:58,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68616 states. [2020-12-23 09:57:58,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68616 states to 68616 states and 91683 transitions. [2020-12-23 09:57:58,497 INFO L78 Accepts]: Start accepts. Automaton has 68616 states and 91683 transitions. Word has length 97 [2020-12-23 09:57:58,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:58,497 INFO L481 AbstractCegarLoop]: Abstraction has 68616 states and 91683 transitions. [2020-12-23 09:57:58,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 09:57:58,497 INFO L276 IsEmpty]: Start isEmpty. Operand 68616 states and 91683 transitions. [2020-12-23 09:57:58,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-23 09:57:58,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:58,502 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:57:58,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:57:58,703 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:58,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:58,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1760600483, now seen corresponding path program 1 times [2020-12-23 09:57:58,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:58,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830715669] [2020-12-23 09:57:58,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:58,772 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:57:58,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830715669] [2020-12-23 09:57:58,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:57:58,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:57:58,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777965626] [2020-12-23 09:57:58,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:57:58,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:58,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:57:58,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:57:58,775 INFO L87 Difference]: Start difference. First operand 68616 states and 91683 transitions. Second operand 3 states. [2020-12-23 09:58:02,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:02,053 INFO L93 Difference]: Finished difference Result 99700 states and 133238 transitions. [2020-12-23 09:58:02,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:58:02,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-23 09:58:02,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:02,102 INFO L225 Difference]: With dead ends: 99700 [2020-12-23 09:58:02,103 INFO L226 Difference]: Without dead ends: 35921 [2020-12-23 09:58:02,150 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 09:58:02,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35921 states. [2020-12-23 09:58:05,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35921 to 35589. [2020-12-23 09:58:05,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35589 states. [2020-12-23 09:58:05,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35589 states to 35589 states and 46617 transitions. [2020-12-23 09:58:05,670 INFO L78 Accepts]: Start accepts. Automaton has 35589 states and 46617 transitions. Word has length 97 [2020-12-23 09:58:05,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:05,671 INFO L481 AbstractCegarLoop]: Abstraction has 35589 states and 46617 transitions. [2020-12-23 09:58:05,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:58:05,671 INFO L276 IsEmpty]: Start isEmpty. Operand 35589 states and 46617 transitions. [2020-12-23 09:58:05,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-23 09:58:05,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:05,673 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:58:05,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 09:58:05,673 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:05,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:05,674 INFO L82 PathProgramCache]: Analyzing trace with hash -58471165, now seen corresponding path program 1 times [2020-12-23 09:58:05,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:05,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203561563] [2020-12-23 09:58:05,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:58:05,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203561563] [2020-12-23 09:58:05,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:05,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:58:05,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604593286] [2020-12-23 09:58:05,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:58:05,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:05,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:58:05,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:58:05,731 INFO L87 Difference]: Start difference. First operand 35589 states and 46617 transitions. Second operand 3 states. [2020-12-23 09:58:07,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:07,576 INFO L93 Difference]: Finished difference Result 54733 states and 71876 transitions. [2020-12-23 09:58:07,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:58:07,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-23 09:58:07,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:07,607 INFO L225 Difference]: With dead ends: 54733 [2020-12-23 09:58:07,607 INFO L226 Difference]: Without dead ends: 23283 [2020-12-23 09:58:07,626 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 09:58:07,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23283 states. [2020-12-23 09:58:09,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23283 to 23281. [2020-12-23 09:58:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23281 states. [2020-12-23 09:58:09,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23281 states to 23281 states and 29853 transitions. [2020-12-23 09:58:09,877 INFO L78 Accepts]: Start accepts. Automaton has 23281 states and 29853 transitions. Word has length 97 [2020-12-23 09:58:09,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:09,878 INFO L481 AbstractCegarLoop]: Abstraction has 23281 states and 29853 transitions. [2020-12-23 09:58:09,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:58:09,878 INFO L276 IsEmpty]: Start isEmpty. Operand 23281 states and 29853 transitions. [2020-12-23 09:58:09,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-23 09:58:09,880 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:09,880 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:58:09,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-23 09:58:09,881 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:09,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:09,881 INFO L82 PathProgramCache]: Analyzing trace with hash 320648747, now seen corresponding path program 1 times [2020-12-23 09:58:09,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:09,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103716704] [2020-12-23 09:58:09,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:09,978 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-23 09:58:09,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103716704] [2020-12-23 09:58:09,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:09,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:58:09,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142819558] [2020-12-23 09:58:09,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:58:09,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:09,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:58:09,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:58:09,980 INFO L87 Difference]: Start difference. First operand 23281 states and 29853 transitions. Second operand 6 states. [2020-12-23 09:58:11,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:11,960 INFO L93 Difference]: Finished difference Result 43036 states and 55354 transitions. [2020-12-23 09:58:11,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:58:11,961 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-12-23 09:58:11,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:11,979 INFO L225 Difference]: With dead ends: 43036 [2020-12-23 09:58:11,979 INFO L226 Difference]: Without dead ends: 19907 [2020-12-23 09:58:11,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 09:58:11,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19907 states. [2020-12-23 09:58:13,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19907 to 19907. [2020-12-23 09:58:13,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19907 states. [2020-12-23 09:58:13,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19907 states to 19907 states and 25238 transitions. [2020-12-23 09:58:13,828 INFO L78 Accepts]: Start accepts. Automaton has 19907 states and 25238 transitions. Word has length 97 [2020-12-23 09:58:13,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:13,828 INFO L481 AbstractCegarLoop]: Abstraction has 19907 states and 25238 transitions. [2020-12-23 09:58:13,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:58:13,828 INFO L276 IsEmpty]: Start isEmpty. Operand 19907 states and 25238 transitions. [2020-12-23 09:58:13,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-23 09:58:13,830 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:13,830 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:58:13,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-23 09:58:13,831 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:13,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:13,831 INFO L82 PathProgramCache]: Analyzing trace with hash -64063125, now seen corresponding path program 1 times [2020-12-23 09:58:13,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:13,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706480375] [2020-12-23 09:58:13,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 09:58:13,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706480375] [2020-12-23 09:58:13,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:13,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:58:13,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729772550] [2020-12-23 09:58:13,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:58:13,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:13,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:58:13,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:58:13,906 INFO L87 Difference]: Start difference. First operand 19907 states and 25238 transitions. Second operand 6 states. [2020-12-23 09:58:15,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:15,456 INFO L93 Difference]: Finished difference Result 34697 states and 44160 transitions. [2020-12-23 09:58:15,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:58:15,457 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-12-23 09:58:15,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:15,469 INFO L225 Difference]: With dead ends: 34697 [2020-12-23 09:58:15,469 INFO L226 Difference]: Without dead ends: 14960 [2020-12-23 09:58:15,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 09:58:15,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14960 states. [2020-12-23 09:58:16,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14960 to 14960. [2020-12-23 09:58:16,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14960 states. [2020-12-23 09:58:16,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14960 states to 14960 states and 18830 transitions. [2020-12-23 09:58:16,838 INFO L78 Accepts]: Start accepts. Automaton has 14960 states and 18830 transitions. Word has length 97 [2020-12-23 09:58:16,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:16,839 INFO L481 AbstractCegarLoop]: Abstraction has 14960 states and 18830 transitions. [2020-12-23 09:58:16,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:58:16,839 INFO L276 IsEmpty]: Start isEmpty. Operand 14960 states and 18830 transitions. [2020-12-23 09:58:16,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-23 09:58:16,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:16,840 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:58:16,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-23 09:58:16,840 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:16,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:16,841 INFO L82 PathProgramCache]: Analyzing trace with hash 729105995, now seen corresponding path program 1 times [2020-12-23 09:58:16,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:16,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393151190] [2020-12-23 09:58:16,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:16,928 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-23 09:58:16,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393151190] [2020-12-23 09:58:16,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:16,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:58:16,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764973151] [2020-12-23 09:58:16,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:58:16,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:16,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:58:16,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:58:16,933 INFO L87 Difference]: Start difference. First operand 14960 states and 18830 transitions. Second operand 6 states. [2020-12-23 09:58:18,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:18,400 INFO L93 Difference]: Finished difference Result 26500 states and 33550 transitions. [2020-12-23 09:58:18,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:58:18,401 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-12-23 09:58:18,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:18,418 INFO L225 Difference]: With dead ends: 26500 [2020-12-23 09:58:18,419 INFO L226 Difference]: Without dead ends: 11624 [2020-12-23 09:58:18,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 09:58:18,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11624 states. [2020-12-23 09:58:19,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11624 to 11624. [2020-12-23 09:58:19,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11624 states. [2020-12-23 09:58:19,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11624 states to 11624 states and 14624 transitions. [2020-12-23 09:58:19,459 INFO L78 Accepts]: Start accepts. Automaton has 11624 states and 14624 transitions. Word has length 97 [2020-12-23 09:58:19,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:19,459 INFO L481 AbstractCegarLoop]: Abstraction has 11624 states and 14624 transitions. [2020-12-23 09:58:19,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:58:19,460 INFO L276 IsEmpty]: Start isEmpty. Operand 11624 states and 14624 transitions. [2020-12-23 09:58:19,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-23 09:58:19,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:19,462 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:58:19,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-23 09:58:19,462 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:19,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:19,462 INFO L82 PathProgramCache]: Analyzing trace with hash -94994768, now seen corresponding path program 1 times [2020-12-23 09:58:19,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:19,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360653464] [2020-12-23 09:58:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:58:19,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360653464] [2020-12-23 09:58:19,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727353460] [2020-12-23 09:58:19,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:58:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:19,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 09:58:19,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:58:20,147 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 09:58:20,460 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:58:20,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:58:20,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-23 09:58:20,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240922362] [2020-12-23 09:58:20,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 09:58:20,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:20,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 09:58:20,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-12-23 09:58:20,463 INFO L87 Difference]: Start difference. First operand 11624 states and 14624 transitions. Second operand 17 states. [2020-12-23 09:58:27,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:27,345 INFO L93 Difference]: Finished difference Result 59820 states and 74792 transitions. [2020-12-23 09:58:27,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-23 09:58:27,346 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 98 [2020-12-23 09:58:27,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:27,398 INFO L225 Difference]: With dead ends: 59820 [2020-12-23 09:58:27,398 INFO L226 Difference]: Without dead ends: 49117 [2020-12-23 09:58:27,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=337, Invalid=995, Unknown=0, NotChecked=0, Total=1332 [2020-12-23 09:58:27,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49117 states. [2020-12-23 09:58:30,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49117 to 29543. [2020-12-23 09:58:30,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29543 states. [2020-12-23 09:58:30,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29543 states to 29543 states and 37000 transitions. [2020-12-23 09:58:30,821 INFO L78 Accepts]: Start accepts. Automaton has 29543 states and 37000 transitions. Word has length 98 [2020-12-23 09:58:30,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:30,821 INFO L481 AbstractCegarLoop]: Abstraction has 29543 states and 37000 transitions. [2020-12-23 09:58:30,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 09:58:30,822 INFO L276 IsEmpty]: Start isEmpty. Operand 29543 states and 37000 transitions. [2020-12-23 09:58:30,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-23 09:58:30,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:30,825 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:58:31,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-23 09:58:31,026 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:31,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:31,027 INFO L82 PathProgramCache]: Analyzing trace with hash -2123580878, now seen corresponding path program 1 times [2020-12-23 09:58:31,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:31,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005398997] [2020-12-23 09:58:31,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:31,137 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:58:31,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005398997] [2020-12-23 09:58:31,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:58:31,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:58:31,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692774644] [2020-12-23 09:58:31,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:58:31,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:58:31,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:58:31,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:58:31,140 INFO L87 Difference]: Start difference. First operand 29543 states and 37000 transitions. Second operand 7 states. [2020-12-23 09:58:35,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:35,251 INFO L93 Difference]: Finished difference Result 61633 states and 77470 transitions. [2020-12-23 09:58:35,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:58:35,251 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-12-23 09:58:35,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:35,285 INFO L225 Difference]: With dead ends: 61633 [2020-12-23 09:58:35,285 INFO L226 Difference]: Without dead ends: 32330 [2020-12-23 09:58:35,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-12-23 09:58:35,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32330 states. [2020-12-23 09:58:38,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32330 to 32328. [2020-12-23 09:58:38,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32328 states. [2020-12-23 09:58:38,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32328 states to 32328 states and 40448 transitions. [2020-12-23 09:58:38,833 INFO L78 Accepts]: Start accepts. Automaton has 32328 states and 40448 transitions. Word has length 98 [2020-12-23 09:58:38,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:38,833 INFO L481 AbstractCegarLoop]: Abstraction has 32328 states and 40448 transitions. [2020-12-23 09:58:38,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:58:38,834 INFO L276 IsEmpty]: Start isEmpty. Operand 32328 states and 40448 transitions. [2020-12-23 09:58:38,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-23 09:58:38,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:38,836 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:58:38,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-23 09:58:38,836 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:38,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:38,836 INFO L82 PathProgramCache]: Analyzing trace with hash 29054276, now seen corresponding path program 1 times [2020-12-23 09:58:38,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:38,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246152413] [2020-12-23 09:58:38,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:39,054 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:58:39,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246152413] [2020-12-23 09:58:39,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085470184] [2020-12-23 09:58:39,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:58:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:39,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 09:58:39,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:58:39,738 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 09:58:39,951 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2020-12-23 09:58:40,422 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 09:58:40,435 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 09:58:40,456 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 09:58:40,465 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-23 09:58:40,724 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 09:58:41,122 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 09:58:41,840 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 09:58:42,153 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 09:58:42,459 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 09:58:42,821 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts