/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.4.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:55:00,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:55:00,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:55:00,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:55:00,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:55:00,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:55:00,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:55:00,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:55:00,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:55:00,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:55:00,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:55:00,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:55:00,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:55:00,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:55:00,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:55:00,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:55:00,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:55:00,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:55:00,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:55:00,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:55:00,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:55:00,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:55:00,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:55:00,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:55:00,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:55:00,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:55:00,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:55:00,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:55:00,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:55:00,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:55:00,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:55:00,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:55:00,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:55:00,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:55:00,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:55:00,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:55:00,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:55:00,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:55:00,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:55:00,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:55:00,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:55:00,427 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 09:55:00,477 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:55:00,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:55:00,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:55:00,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:55:00,483 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:55:00,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:55:00,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:55:00,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:55:00,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:55:00,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:55:00,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:55:00,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:55:00,485 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:55:00,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:55:00,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:55:00,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:55:00,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:55:00,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:55:00,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:55:00,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:55:00,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:55:00,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:55:00,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:55:00,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:55:00,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:55:00,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:55:00,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:55:00,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:55:00,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:55:00,955 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:55:00,956 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:55:00,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.UNBOUNDED.pals.c [2020-12-23 09:55:01,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0f3798ffa/e3c941c2058d40f0ad9ed06c0eaf86b7/FLAG9c911fea1 [2020-12-23 09:55:01,823 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:55:01,824 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.UNBOUNDED.pals.c [2020-12-23 09:55:01,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0f3798ffa/e3c941c2058d40f0ad9ed06c0eaf86b7/FLAG9c911fea1 [2020-12-23 09:55:02,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0f3798ffa/e3c941c2058d40f0ad9ed06c0eaf86b7 [2020-12-23 09:55:02,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:55:02,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:55:02,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:55:02,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:55:02,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:55:02,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:55:02" (1/1) ... [2020-12-23 09:55:02,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3424b71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:55:02, skipping insertion in model container [2020-12-23 09:55:02,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:55:02" (1/1) ... [2020-12-23 09:55:02,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:55:02,191 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[~p4_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[~send1~0,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[~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[~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[~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[~c1~0,] [2020-12-23 09:55:02,418 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.4.1.ufo.UNBOUNDED.pals.c[8342,8355] [2020-12-23 09:55:02,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:55:02,458 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[~p4_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[~send1~0,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[~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[~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[~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[~c1~0,] [2020-12-23 09:55:02,577 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.4.1.ufo.UNBOUNDED.pals.c[8342,8355] [2020-12-23 09:55:02,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:55:02,610 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:55:02,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:55:02 WrapperNode [2020-12-23 09:55:02,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:55:02,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:55:02,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:55:02,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:55:02,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:55:02" (1/1) ... [2020-12-23 09:55:02,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:55:02" (1/1) ... [2020-12-23 09:55:02,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:55:02,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:55:02,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:55:02,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:55:02,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:55:02" (1/1) ... [2020-12-23 09:55:02,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:55:02" (1/1) ... [2020-12-23 09:55:02,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:55:02" (1/1) ... [2020-12-23 09:55:02,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:55:02" (1/1) ... [2020-12-23 09:55:02,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:55:02" (1/1) ... [2020-12-23 09:55:02,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:55:02" (1/1) ... [2020-12-23 09:55:02,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:55:02" (1/1) ... [2020-12-23 09:55:02,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:55:02,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:55:02,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:55:02,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:55:02,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:55:02" (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 09:55:02,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:55:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:55:02,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:55:02,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:55:03,790 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:55:03,791 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2020-12-23 09:55:03,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:55:03 BoogieIcfgContainer [2020-12-23 09:55:03,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:55:03,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:55:03,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:55:03,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:55:03,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:55:02" (1/3) ... [2020-12-23 09:55:03,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12893c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:55:03, skipping insertion in model container [2020-12-23 09:55:03,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:55:02" (2/3) ... [2020-12-23 09:55:03,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12893c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:55:03, skipping insertion in model container [2020-12-23 09:55:03,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:55:03" (3/3) ... [2020-12-23 09:55:03,802 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c [2020-12-23 09:55:03,809 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:55:03,815 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 09:55:03,835 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 09:55:03,863 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:55:03,864 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:55:03,864 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:55:03,864 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:55:03,864 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:55:03,864 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:55:03,865 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:55:03,865 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:55:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-12-23 09:55:03,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 09:55:03,891 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:03,892 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] [2020-12-23 09:55:03,892 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:03,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:03,899 INFO L82 PathProgramCache]: Analyzing trace with hash -171388107, now seen corresponding path program 1 times [2020-12-23 09:55:03,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:03,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92557418] [2020-12-23 09:55:03,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:04,114 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 09:55:04,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92557418] [2020-12-23 09:55:04,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:04,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:55:04,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232206287] [2020-12-23 09:55:04,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 09:55:04,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:04,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 09:55:04,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 09:55:04,142 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2020-12-23 09:55:04,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:04,173 INFO L93 Difference]: Finished difference Result 124 states and 205 transitions. [2020-12-23 09:55:04,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 09:55:04,174 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2020-12-23 09:55:04,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:04,186 INFO L225 Difference]: With dead ends: 124 [2020-12-23 09:55:04,186 INFO L226 Difference]: Without dead ends: 74 [2020-12-23 09:55:04,190 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 09:55:04,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-23 09:55:04,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-23 09:55:04,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-23 09:55:04,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 123 transitions. [2020-12-23 09:55:04,237 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 123 transitions. Word has length 29 [2020-12-23 09:55:04,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:04,238 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 123 transitions. [2020-12-23 09:55:04,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 09:55:04,238 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 123 transitions. [2020-12-23 09:55:04,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 09:55:04,240 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:04,240 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] [2020-12-23 09:55:04,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:55:04,241 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:04,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:04,242 INFO L82 PathProgramCache]: Analyzing trace with hash -305401613, now seen corresponding path program 1 times [2020-12-23 09:55:04,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:04,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80751265] [2020-12-23 09:55:04,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:04,356 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 09:55:04,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80751265] [2020-12-23 09:55:04,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:04,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:55:04,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889330549] [2020-12-23 09:55:04,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:55:04,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:04,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:55:04,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:55:04,361 INFO L87 Difference]: Start difference. First operand 74 states and 123 transitions. Second operand 5 states. [2020-12-23 09:55:04,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:04,466 INFO L93 Difference]: Finished difference Result 123 states and 198 transitions. [2020-12-23 09:55:04,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:55:04,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-12-23 09:55:04,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:04,469 INFO L225 Difference]: With dead ends: 123 [2020-12-23 09:55:04,469 INFO L226 Difference]: Without dead ends: 74 [2020-12-23 09:55:04,471 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 09:55:04,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-23 09:55:04,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-23 09:55:04,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-23 09:55:04,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 100 transitions. [2020-12-23 09:55:04,481 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 100 transitions. Word has length 29 [2020-12-23 09:55:04,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:04,481 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 100 transitions. [2020-12-23 09:55:04,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:55:04,482 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 100 transitions. [2020-12-23 09:55:04,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 09:55:04,484 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:04,484 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] [2020-12-23 09:55:04,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:55:04,485 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:04,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:04,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1295954354, now seen corresponding path program 1 times [2020-12-23 09:55:04,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:04,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676637132] [2020-12-23 09:55:04,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:04,689 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 09:55:04,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676637132] [2020-12-23 09:55:04,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:04,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:55:04,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512786338] [2020-12-23 09:55:04,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:55:04,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:04,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:55:04,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:55:04,696 INFO L87 Difference]: Start difference. First operand 74 states and 100 transitions. Second operand 3 states. [2020-12-23 09:55:04,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:04,734 INFO L93 Difference]: Finished difference Result 158 states and 232 transitions. [2020-12-23 09:55:04,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:55:04,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-23 09:55:04,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:04,737 INFO L225 Difference]: With dead ends: 158 [2020-12-23 09:55:04,737 INFO L226 Difference]: Without dead ends: 113 [2020-12-23 09:55:04,738 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 09:55:04,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-23 09:55:04,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2020-12-23 09:55:04,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-12-23 09:55:04,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2020-12-23 09:55:04,752 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 51 [2020-12-23 09:55:04,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:04,752 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2020-12-23 09:55:04,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:55:04,753 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2020-12-23 09:55:04,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 09:55:04,754 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:04,755 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] [2020-12-23 09:55:04,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:55:04,755 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:04,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:04,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1404728260, now seen corresponding path program 1 times [2020-12-23 09:55:04,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:04,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823825169] [2020-12-23 09:55:04,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:04,951 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 09:55:04,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823825169] [2020-12-23 09:55:04,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:04,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:55:04,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611505472] [2020-12-23 09:55:04,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:55:04,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:04,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:55:04,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:55:04,955 INFO L87 Difference]: Start difference. First operand 111 states and 159 transitions. Second operand 3 states. [2020-12-23 09:55:05,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:05,016 INFO L93 Difference]: Finished difference Result 263 states and 399 transitions. [2020-12-23 09:55:05,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:55:05,017 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-23 09:55:05,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:05,030 INFO L225 Difference]: With dead ends: 263 [2020-12-23 09:55:05,030 INFO L226 Difference]: Without dead ends: 181 [2020-12-23 09:55:05,032 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 09:55:05,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-12-23 09:55:05,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2020-12-23 09:55:05,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-12-23 09:55:05,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 266 transitions. [2020-12-23 09:55:05,069 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 266 transitions. Word has length 51 [2020-12-23 09:55:05,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:05,069 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 266 transitions. [2020-12-23 09:55:05,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:55:05,070 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 266 transitions. [2020-12-23 09:55:05,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 09:55:05,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:05,072 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] [2020-12-23 09:55:05,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:55:05,072 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:05,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:05,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1742521402, now seen corresponding path program 1 times [2020-12-23 09:55:05,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:05,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545996885] [2020-12-23 09:55:05,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:05,254 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 09:55:05,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545996885] [2020-12-23 09:55:05,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:05,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:55:05,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994807947] [2020-12-23 09:55:05,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:55:05,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:05,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:55:05,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:55:05,258 INFO L87 Difference]: Start difference. First operand 179 states and 266 transitions. Second operand 6 states. [2020-12-23 09:55:05,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:05,616 INFO L93 Difference]: Finished difference Result 1379 states and 2162 transitions. [2020-12-23 09:55:05,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 09:55:05,617 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-12-23 09:55:05,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:05,626 INFO L225 Difference]: With dead ends: 1379 [2020-12-23 09:55:05,626 INFO L226 Difference]: Without dead ends: 1229 [2020-12-23 09:55:05,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:55:05,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2020-12-23 09:55:05,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 327. [2020-12-23 09:55:05,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-12-23 09:55:05,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 494 transitions. [2020-12-23 09:55:05,698 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 494 transitions. Word has length 51 [2020-12-23 09:55:05,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:05,699 INFO L481 AbstractCegarLoop]: Abstraction has 327 states and 494 transitions. [2020-12-23 09:55:05,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:55:05,699 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 494 transitions. [2020-12-23 09:55:05,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 09:55:05,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:05,702 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] [2020-12-23 09:55:05,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:55:05,702 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:05,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:05,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1889876246, now seen corresponding path program 1 times [2020-12-23 09:55:05,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:05,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564066003] [2020-12-23 09:55:05,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:05,816 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 09:55:05,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564066003] [2020-12-23 09:55:05,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:05,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:55:05,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698841776] [2020-12-23 09:55:05,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:55:05,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:05,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:55:05,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:55:05,825 INFO L87 Difference]: Start difference. First operand 327 states and 494 transitions. Second operand 3 states. [2020-12-23 09:55:05,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:05,914 INFO L93 Difference]: Finished difference Result 879 states and 1348 transitions. [2020-12-23 09:55:05,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:55:05,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-23 09:55:05,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:05,921 INFO L225 Difference]: With dead ends: 879 [2020-12-23 09:55:05,921 INFO L226 Difference]: Without dead ends: 581 [2020-12-23 09:55:05,927 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 09:55:05,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-12-23 09:55:06,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 571. [2020-12-23 09:55:06,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-23 09:55:06,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 854 transitions. [2020-12-23 09:55:06,005 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 854 transitions. Word has length 53 [2020-12-23 09:55:06,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:06,006 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 854 transitions. [2020-12-23 09:55:06,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:55:06,006 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 854 transitions. [2020-12-23 09:55:06,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 09:55:06,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:06,008 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] [2020-12-23 09:55:06,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:55:06,009 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:06,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:06,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1823382734, now seen corresponding path program 1 times [2020-12-23 09:55:06,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:06,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550071729] [2020-12-23 09:55:06,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:06,266 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 09:55:06,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550071729] [2020-12-23 09:55:06,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:06,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:55:06,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970770974] [2020-12-23 09:55:06,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:55:06,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:06,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:55:06,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:55:06,272 INFO L87 Difference]: Start difference. First operand 571 states and 854 transitions. Second operand 6 states. [2020-12-23 09:55:06,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:06,457 INFO L93 Difference]: Finished difference Result 1115 states and 1680 transitions. [2020-12-23 09:55:06,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:55:06,458 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-12-23 09:55:06,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:06,463 INFO L225 Difference]: With dead ends: 1115 [2020-12-23 09:55:06,464 INFO L226 Difference]: Without dead ends: 573 [2020-12-23 09:55:06,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:55:06,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-12-23 09:55:06,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 571. [2020-12-23 09:55:06,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-23 09:55:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 846 transitions. [2020-12-23 09:55:06,502 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 846 transitions. Word has length 53 [2020-12-23 09:55:06,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:06,504 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 846 transitions. [2020-12-23 09:55:06,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:55:06,504 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 846 transitions. [2020-12-23 09:55:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-23 09:55:06,512 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:06,512 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] [2020-12-23 09:55:06,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:55:06,512 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:06,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:06,513 INFO L82 PathProgramCache]: Analyzing trace with hash -34468658, now seen corresponding path program 1 times [2020-12-23 09:55:06,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:06,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855639076] [2020-12-23 09:55:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:06,568 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 09:55:06,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855639076] [2020-12-23 09:55:06,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:06,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:55:06,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262542224] [2020-12-23 09:55:06,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:55:06,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:06,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:55:06,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:55:06,571 INFO L87 Difference]: Start difference. First operand 571 states and 846 transitions. Second operand 3 states. [2020-12-23 09:55:06,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:06,638 INFO L93 Difference]: Finished difference Result 1559 states and 2320 transitions. [2020-12-23 09:55:06,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:55:06,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-23 09:55:06,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:06,647 INFO L225 Difference]: With dead ends: 1559 [2020-12-23 09:55:06,647 INFO L226 Difference]: Without dead ends: 1017 [2020-12-23 09:55:06,648 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 09:55:06,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2020-12-23 09:55:06,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 1015. [2020-12-23 09:55:06,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-12-23 09:55:06,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1486 transitions. [2020-12-23 09:55:06,714 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1486 transitions. Word has length 53 [2020-12-23 09:55:06,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:06,716 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1486 transitions. [2020-12-23 09:55:06,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:55:06,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1486 transitions. [2020-12-23 09:55:06,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-23 09:55:06,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:06,720 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] [2020-12-23 09:55:06,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:55:06,721 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:06,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:06,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1105013027, now seen corresponding path program 1 times [2020-12-23 09:55:06,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:06,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655674830] [2020-12-23 09:55:06,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:06,895 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 09:55:06,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655674830] [2020-12-23 09:55:06,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:06,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 09:55:06,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980668352] [2020-12-23 09:55:06,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 09:55:06,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:06,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 09:55:06,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:55:06,907 INFO L87 Difference]: Start difference. First operand 1015 states and 1486 transitions. Second operand 8 states. [2020-12-23 09:55:07,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:07,198 INFO L93 Difference]: Finished difference Result 1769 states and 2571 transitions. [2020-12-23 09:55:07,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 09:55:07,200 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-12-23 09:55:07,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:07,210 INFO L225 Difference]: With dead ends: 1769 [2020-12-23 09:55:07,211 INFO L226 Difference]: Without dead ends: 1767 [2020-12-23 09:55:07,212 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 09:55:07,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-12-23 09:55:07,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1063. [2020-12-23 09:55:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2020-12-23 09:55:07,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1526 transitions. [2020-12-23 09:55:07,314 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1526 transitions. Word has length 54 [2020-12-23 09:55:07,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:07,314 INFO L481 AbstractCegarLoop]: Abstraction has 1063 states and 1526 transitions. [2020-12-23 09:55:07,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 09:55:07,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1526 transitions. [2020-12-23 09:55:07,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-23 09:55:07,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:07,316 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] [2020-12-23 09:55:07,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:55:07,316 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:07,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:07,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1044582089, now seen corresponding path program 1 times [2020-12-23 09:55:07,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:07,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191260059] [2020-12-23 09:55:07,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:07,389 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 09:55:07,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191260059] [2020-12-23 09:55:07,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:07,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:55:07,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97216352] [2020-12-23 09:55:07,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:55:07,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:07,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:55:07,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:55:07,393 INFO L87 Difference]: Start difference. First operand 1063 states and 1526 transitions. Second operand 3 states. [2020-12-23 09:55:07,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:07,551 INFO L93 Difference]: Finished difference Result 2126 states and 3084 transitions. [2020-12-23 09:55:07,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:55:07,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-23 09:55:07,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:07,567 INFO L225 Difference]: With dead ends: 2126 [2020-12-23 09:55:07,567 INFO L226 Difference]: Without dead ends: 1531 [2020-12-23 09:55:07,569 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 09:55:07,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2020-12-23 09:55:07,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1529. [2020-12-23 09:55:07,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1529 states. [2020-12-23 09:55:07,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 2184 transitions. [2020-12-23 09:55:07,695 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 2184 transitions. Word has length 55 [2020-12-23 09:55:07,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:07,696 INFO L481 AbstractCegarLoop]: Abstraction has 1529 states and 2184 transitions. [2020-12-23 09:55:07,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:55:07,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 2184 transitions. [2020-12-23 09:55:07,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 09:55:07,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:07,698 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 09:55:07,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:55:07,698 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:07,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:07,699 INFO L82 PathProgramCache]: Analyzing trace with hash -993002958, now seen corresponding path program 1 times [2020-12-23 09:55:07,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:07,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426000423] [2020-12-23 09:55:07,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:07,840 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-23 09:55:07,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426000423] [2020-12-23 09:55:07,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:07,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:55:07,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929076218] [2020-12-23 09:55:07,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:55:07,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:07,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:55:07,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:55:07,852 INFO L87 Difference]: Start difference. First operand 1529 states and 2184 transitions. Second operand 6 states. [2020-12-23 09:55:08,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:08,415 INFO L93 Difference]: Finished difference Result 7835 states and 11225 transitions. [2020-12-23 09:55:08,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:55:08,416 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-23 09:55:08,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:08,450 INFO L225 Difference]: With dead ends: 7835 [2020-12-23 09:55:08,450 INFO L226 Difference]: Without dead ends: 6337 [2020-12-23 09:55:08,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 09:55:08,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6337 states. [2020-12-23 09:55:08,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6337 to 3025. [2020-12-23 09:55:08,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3025 states. [2020-12-23 09:55:08,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3025 states to 3025 states and 4312 transitions. [2020-12-23 09:55:08,742 INFO L78 Accepts]: Start accepts. Automaton has 3025 states and 4312 transitions. Word has length 77 [2020-12-23 09:55:08,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:08,743 INFO L481 AbstractCegarLoop]: Abstraction has 3025 states and 4312 transitions. [2020-12-23 09:55:08,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:55:08,743 INFO L276 IsEmpty]: Start isEmpty. Operand 3025 states and 4312 transitions. [2020-12-23 09:55:08,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 09:55:08,745 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:08,746 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 09:55:08,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:55:08,746 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:08,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:08,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1543800376, now seen corresponding path program 1 times [2020-12-23 09:55:08,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:08,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854000429] [2020-12-23 09:55:08,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:08,850 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 09:55:08,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854000429] [2020-12-23 09:55:08,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:08,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:55:08,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613032530] [2020-12-23 09:55:08,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:55:08,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:08,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:55:08,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:55:08,852 INFO L87 Difference]: Start difference. First operand 3025 states and 4312 transitions. Second operand 6 states. [2020-12-23 09:55:09,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:09,435 INFO L93 Difference]: Finished difference Result 9331 states and 13353 transitions. [2020-12-23 09:55:09,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:55:09,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-23 09:55:09,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:09,477 INFO L225 Difference]: With dead ends: 9331 [2020-12-23 09:55:09,477 INFO L226 Difference]: Without dead ends: 7833 [2020-12-23 09:55:09,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 09:55:09,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7833 states. [2020-12-23 09:55:09,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7833 to 5273. [2020-12-23 09:55:09,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5273 states. [2020-12-23 09:55:09,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5273 states to 5273 states and 7484 transitions. [2020-12-23 09:55:09,961 INFO L78 Accepts]: Start accepts. Automaton has 5273 states and 7484 transitions. Word has length 77 [2020-12-23 09:55:09,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:09,966 INFO L481 AbstractCegarLoop]: Abstraction has 5273 states and 7484 transitions. [2020-12-23 09:55:09,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:55:09,966 INFO L276 IsEmpty]: Start isEmpty. Operand 5273 states and 7484 transitions. [2020-12-23 09:55:09,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 09:55:09,969 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:09,969 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 09:55:09,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:55:09,970 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:09,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:09,971 INFO L82 PathProgramCache]: Analyzing trace with hash -412160536, now seen corresponding path program 1 times [2020-12-23 09:55:09,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:09,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714826974] [2020-12-23 09:55:09,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:10,060 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 09:55:10,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714826974] [2020-12-23 09:55:10,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:10,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:55:10,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517711174] [2020-12-23 09:55:10,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:55:10,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:10,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:55:10,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:55:10,063 INFO L87 Difference]: Start difference. First operand 5273 states and 7484 transitions. Second operand 6 states. [2020-12-23 09:55:10,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:10,770 INFO L93 Difference]: Finished difference Result 10827 states and 15481 transitions. [2020-12-23 09:55:10,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:55:10,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-12-23 09:55:10,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:10,825 INFO L225 Difference]: With dead ends: 10827 [2020-12-23 09:55:10,826 INFO L226 Difference]: Without dead ends: 9329 [2020-12-23 09:55:10,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 09:55:10,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9329 states. [2020-12-23 09:55:11,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9329 to 6769. [2020-12-23 09:55:11,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6769 states. [2020-12-23 09:55:11,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 9612 transitions. [2020-12-23 09:55:11,465 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 9612 transitions. Word has length 77 [2020-12-23 09:55:11,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:11,469 INFO L481 AbstractCegarLoop]: Abstraction has 6769 states and 9612 transitions. [2020-12-23 09:55:11,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:55:11,470 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 9612 transitions. [2020-12-23 09:55:11,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 09:55:11,474 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:11,475 INFO L422 BasicCegarLoop]: trace histogram [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 09:55:11,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 09:55:11,475 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:11,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:11,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1033264429, now seen corresponding path program 1 times [2020-12-23 09:55:11,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:11,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986420622] [2020-12-23 09:55:11,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:11,582 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 09:55:11,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986420622] [2020-12-23 09:55:11,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:11,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:55:11,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587608254] [2020-12-23 09:55:11,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:55:11,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:11,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:55:11,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:55:11,584 INFO L87 Difference]: Start difference. First operand 6769 states and 9612 transitions. Second operand 6 states. [2020-12-23 09:55:12,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:12,389 INFO L93 Difference]: Finished difference Result 11443 states and 16377 transitions. [2020-12-23 09:55:12,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:55:12,390 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-12-23 09:55:12,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:12,414 INFO L225 Difference]: With dead ends: 11443 [2020-12-23 09:55:12,414 INFO L226 Difference]: Without dead ends: 10385 [2020-12-23 09:55:12,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 09:55:12,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10385 states. [2020-12-23 09:55:12,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10385 to 7825. [2020-12-23 09:55:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7825 states. [2020-12-23 09:55:12,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7825 states to 7825 states and 11132 transitions. [2020-12-23 09:55:12,971 INFO L78 Accepts]: Start accepts. Automaton has 7825 states and 11132 transitions. Word has length 79 [2020-12-23 09:55:12,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:12,972 INFO L481 AbstractCegarLoop]: Abstraction has 7825 states and 11132 transitions. [2020-12-23 09:55:12,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:55:12,972 INFO L276 IsEmpty]: Start isEmpty. Operand 7825 states and 11132 transitions. [2020-12-23 09:55:12,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-23 09:55:12,976 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:12,977 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] [2020-12-23 09:55:12,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:55:12,977 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:12,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:12,981 INFO L82 PathProgramCache]: Analyzing trace with hash -2142307542, now seen corresponding path program 1 times [2020-12-23 09:55:12,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:12,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867410167] [2020-12-23 09:55:12,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:13,041 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 09:55:13,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867410167] [2020-12-23 09:55:13,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:13,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:55:13,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988064126] [2020-12-23 09:55:13,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:55:13,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:13,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:55:13,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:55:13,043 INFO L87 Difference]: Start difference. First operand 7825 states and 11132 transitions. Second operand 3 states. [2020-12-23 09:55:13,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:13,444 INFO L93 Difference]: Finished difference Result 13662 states and 19524 transitions. [2020-12-23 09:55:13,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:55:13,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-23 09:55:13,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:13,458 INFO L225 Difference]: With dead ends: 13662 [2020-12-23 09:55:13,458 INFO L226 Difference]: Without dead ends: 5868 [2020-12-23 09:55:13,467 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 09:55:13,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5868 states. [2020-12-23 09:55:13,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5868 to 5866. [2020-12-23 09:55:13,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5866 states. [2020-12-23 09:55:13,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5866 states to 5866 states and 8333 transitions. [2020-12-23 09:55:13,819 INFO L78 Accepts]: Start accepts. Automaton has 5866 states and 8333 transitions. Word has length 79 [2020-12-23 09:55:13,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:13,820 INFO L481 AbstractCegarLoop]: Abstraction has 5866 states and 8333 transitions. [2020-12-23 09:55:13,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:55:13,820 INFO L276 IsEmpty]: Start isEmpty. Operand 5866 states and 8333 transitions. [2020-12-23 09:55:13,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 09:55:13,822 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:13,823 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] [2020-12-23 09:55:13,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 09:55:13,823 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:13,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:13,824 INFO L82 PathProgramCache]: Analyzing trace with hash -848547533, now seen corresponding path program 1 times [2020-12-23 09:55:13,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:13,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966779620] [2020-12-23 09:55:13,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:13,928 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 09:55:13,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966779620] [2020-12-23 09:55:13,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:13,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:55:13,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727714918] [2020-12-23 09:55:13,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:55:13,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:13,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:55:13,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:55:13,932 INFO L87 Difference]: Start difference. First operand 5866 states and 8333 transitions. Second operand 3 states. [2020-12-23 09:55:14,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:14,165 INFO L93 Difference]: Finished difference Result 8774 states and 12471 transitions. [2020-12-23 09:55:14,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:55:14,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-23 09:55:14,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:14,172 INFO L225 Difference]: With dead ends: 8774 [2020-12-23 09:55:14,172 INFO L226 Difference]: Without dead ends: 2964 [2020-12-23 09:55:14,180 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 09:55:14,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2020-12-23 09:55:14,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2962. [2020-12-23 09:55:14,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2962 states. [2020-12-23 09:55:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2962 states to 2962 states and 4153 transitions. [2020-12-23 09:55:14,371 INFO L78 Accepts]: Start accepts. Automaton has 2962 states and 4153 transitions. Word has length 80 [2020-12-23 09:55:14,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:14,371 INFO L481 AbstractCegarLoop]: Abstraction has 2962 states and 4153 transitions. [2020-12-23 09:55:14,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:55:14,371 INFO L276 IsEmpty]: Start isEmpty. Operand 2962 states and 4153 transitions. [2020-12-23 09:55:14,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 09:55:14,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:14,375 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] [2020-12-23 09:55:14,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 09:55:14,376 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:14,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:14,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1967822743, now seen corresponding path program 1 times [2020-12-23 09:55:14,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:14,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390296699] [2020-12-23 09:55:14,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:14,646 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 09:55:14,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390296699] [2020-12-23 09:55:14,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417275056] [2020-12-23 09:55:14,647 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 09:55:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:14,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 09:55:14,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:55:15,300 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 09:55:15,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:55:15,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-23 09:55:15,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523353580] [2020-12-23 09:55:15,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 09:55:15,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:15,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 09:55:15,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-12-23 09:55:15,303 INFO L87 Difference]: Start difference. First operand 2962 states and 4153 transitions. Second operand 12 states. [2020-12-23 09:55:18,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:18,776 INFO L93 Difference]: Finished difference Result 19908 states and 27500 transitions. [2020-12-23 09:55:18,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-23 09:55:18,776 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-12-23 09:55:18,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:18,813 INFO L225 Difference]: With dead ends: 19908 [2020-12-23 09:55:18,813 INFO L226 Difference]: Without dead ends: 17002 [2020-12-23 09:55:18,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=343, Invalid=1379, Unknown=0, NotChecked=0, Total=1722 [2020-12-23 09:55:18,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17002 states. [2020-12-23 09:55:19,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17002 to 10036. [2020-12-23 09:55:19,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10036 states. [2020-12-23 09:55:19,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10036 states to 10036 states and 13594 transitions. [2020-12-23 09:55:19,863 INFO L78 Accepts]: Start accepts. Automaton has 10036 states and 13594 transitions. Word has length 80 [2020-12-23 09:55:19,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:19,863 INFO L481 AbstractCegarLoop]: Abstraction has 10036 states and 13594 transitions. [2020-12-23 09:55:19,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 09:55:19,863 INFO L276 IsEmpty]: Start isEmpty. Operand 10036 states and 13594 transitions. [2020-12-23 09:55:19,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-23 09:55:19,866 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:19,866 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] [2020-12-23 09:55:20,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 09:55:20,081 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:20,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:20,082 INFO L82 PathProgramCache]: Analyzing trace with hash -907232945, now seen corresponding path program 1 times [2020-12-23 09:55:20,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:20,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934116185] [2020-12-23 09:55:20,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:20,293 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:55:20,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934116185] [2020-12-23 09:55:20,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554341200] [2020-12-23 09:55:20,294 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 09:55:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:20,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-23 09:55:20,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:55:20,648 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 09:55:20,924 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 09:55:20,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:55:20,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-23 09:55:20,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440074964] [2020-12-23 09:55:20,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 09:55:20,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:20,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 09:55:20,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-12-23 09:55:20,926 INFO L87 Difference]: Start difference. First operand 10036 states and 13594 transitions. Second operand 17 states. [2020-12-23 09:55:29,687 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-12-23 09:55:34,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:34,899 INFO L93 Difference]: Finished difference Result 109773 states and 147139 transitions. [2020-12-23 09:55:34,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-12-23 09:55:34,900 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 81 [2020-12-23 09:55:34,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:35,125 INFO L225 Difference]: With dead ends: 109773 [2020-12-23 09:55:35,125 INFO L226 Difference]: Without dead ends: 100594 [2020-12-23 09:55:35,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3764 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1720, Invalid=8992, Unknown=0, NotChecked=0, Total=10712 [2020-12-23 09:55:35,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100594 states. [2020-12-23 09:55:39,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100594 to 50345. [2020-12-23 09:55:39,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50345 states. [2020-12-23 09:55:39,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50345 states to 50345 states and 67215 transitions. [2020-12-23 09:55:39,986 INFO L78 Accepts]: Start accepts. Automaton has 50345 states and 67215 transitions. Word has length 81 [2020-12-23 09:55:39,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:39,986 INFO L481 AbstractCegarLoop]: Abstraction has 50345 states and 67215 transitions. [2020-12-23 09:55:39,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 09:55:39,986 INFO L276 IsEmpty]: Start isEmpty. Operand 50345 states and 67215 transitions. [2020-12-23 09:55:39,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-23 09:55:39,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:39,990 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 09:55:40,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 09:55:40,204 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:40,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:40,205 INFO L82 PathProgramCache]: Analyzing trace with hash 970030519, now seen corresponding path program 1 times [2020-12-23 09:55:40,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:40,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629099140] [2020-12-23 09:55:40,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:55:40,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629099140] [2020-12-23 09:55:40,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:40,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:55:40,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65710102] [2020-12-23 09:55:40,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:55:40,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:40,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:55:40,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:55:40,274 INFO L87 Difference]: Start difference. First operand 50345 states and 67215 transitions. Second operand 3 states. [2020-12-23 09:55:43,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:43,264 INFO L93 Difference]: Finished difference Result 73011 states and 97619 transitions. [2020-12-23 09:55:43,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:55:43,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-23 09:55:43,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:43,309 INFO L225 Difference]: With dead ends: 73011 [2020-12-23 09:55:43,309 INFO L226 Difference]: Without dead ends: 26727 [2020-12-23 09:55:43,346 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 09:55:43,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26727 states. [2020-12-23 09:55:45,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26727 to 26443. [2020-12-23 09:55:45,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26443 states. [2020-12-23 09:55:45,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26443 states to 26443 states and 34582 transitions. [2020-12-23 09:55:45,627 INFO L78 Accepts]: Start accepts. Automaton has 26443 states and 34582 transitions. Word has length 81 [2020-12-23 09:55:45,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:45,628 INFO L481 AbstractCegarLoop]: Abstraction has 26443 states and 34582 transitions. [2020-12-23 09:55:45,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:55:45,628 INFO L276 IsEmpty]: Start isEmpty. Operand 26443 states and 34582 transitions. [2020-12-23 09:55:45,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-23 09:55:45,635 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:45,636 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 09:55:45,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 09:55:45,637 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:45,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:45,637 INFO L82 PathProgramCache]: Analyzing trace with hash 696342807, now seen corresponding path program 1 times [2020-12-23 09:55:45,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:45,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204775056] [2020-12-23 09:55:45,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:45,712 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:55:45,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204775056] [2020-12-23 09:55:45,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:45,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:55:45,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313322702] [2020-12-23 09:55:45,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:55:45,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:45,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:55:45,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:55:45,716 INFO L87 Difference]: Start difference. First operand 26443 states and 34582 transitions. Second operand 3 states. [2020-12-23 09:55:47,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:47,035 INFO L93 Difference]: Finished difference Result 40701 states and 53415 transitions. [2020-12-23 09:55:47,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:55:47,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-23 09:55:47,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:47,059 INFO L225 Difference]: With dead ends: 40701 [2020-12-23 09:55:47,059 INFO L226 Difference]: Without dead ends: 17417 [2020-12-23 09:55:47,079 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 09:55:47,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17417 states. [2020-12-23 09:55:48,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17417 to 17415. [2020-12-23 09:55:48,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17415 states. [2020-12-23 09:55:48,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17415 states to 17415 states and 22267 transitions. [2020-12-23 09:55:48,378 INFO L78 Accepts]: Start accepts. Automaton has 17415 states and 22267 transitions. Word has length 81 [2020-12-23 09:55:48,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:48,379 INFO L481 AbstractCegarLoop]: Abstraction has 17415 states and 22267 transitions. [2020-12-23 09:55:48,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:55:48,379 INFO L276 IsEmpty]: Start isEmpty. Operand 17415 states and 22267 transitions. [2020-12-23 09:55:48,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-23 09:55:48,380 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:48,380 INFO L422 BasicCegarLoop]: trace histogram [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 09:55:48,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 09:55:48,380 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:48,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:48,381 INFO L82 PathProgramCache]: Analyzing trace with hash 336401983, now seen corresponding path program 1 times [2020-12-23 09:55:48,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:48,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809483533] [2020-12-23 09:55:48,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-23 09:55:48,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809483533] [2020-12-23 09:55:48,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:48,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:55:48,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355416329] [2020-12-23 09:55:48,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:55:48,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:48,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:55:48,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:55:48,456 INFO L87 Difference]: Start difference. First operand 17415 states and 22267 transitions. Second operand 6 states. [2020-12-23 09:55:49,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:49,437 INFO L93 Difference]: Finished difference Result 25969 states and 33373 transitions. [2020-12-23 09:55:49,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:55:49,438 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-23 09:55:49,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:49,448 INFO L225 Difference]: With dead ends: 25969 [2020-12-23 09:55:49,449 INFO L226 Difference]: Without dead ends: 8682 [2020-12-23 09:55:49,462 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 09:55:49,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8682 states. [2020-12-23 09:55:50,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8682 to 8682. [2020-12-23 09:55:50,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8682 states. [2020-12-23 09:55:50,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8682 states to 8682 states and 11037 transitions. [2020-12-23 09:55:50,221 INFO L78 Accepts]: Start accepts. Automaton has 8682 states and 11037 transitions. Word has length 81 [2020-12-23 09:55:50,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:50,222 INFO L481 AbstractCegarLoop]: Abstraction has 8682 states and 11037 transitions. [2020-12-23 09:55:50,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:55:50,222 INFO L276 IsEmpty]: Start isEmpty. Operand 8682 states and 11037 transitions. [2020-12-23 09:55:50,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-23 09:55:50,223 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:50,223 INFO L422 BasicCegarLoop]: trace histogram [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 09:55:50,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 09:55:50,223 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:50,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:50,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1734457217, now seen corresponding path program 1 times [2020-12-23 09:55:50,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:50,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925906739] [2020-12-23 09:55:50,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 09:55:50,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925906739] [2020-12-23 09:55:50,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:50,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:55:50,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967315442] [2020-12-23 09:55:50,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:55:50,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:50,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:55:50,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:55:50,298 INFO L87 Difference]: Start difference. First operand 8682 states and 11037 transitions. Second operand 6 states. [2020-12-23 09:55:51,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:51,148 INFO L93 Difference]: Finished difference Result 15115 states and 19285 transitions. [2020-12-23 09:55:51,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:55:51,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-23 09:55:51,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:51,156 INFO L225 Difference]: With dead ends: 15115 [2020-12-23 09:55:51,156 INFO L226 Difference]: Without dead ends: 6565 [2020-12-23 09:55:51,163 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 09:55:51,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6565 states. [2020-12-23 09:55:51,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6565 to 6565. [2020-12-23 09:55:51,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6565 states. [2020-12-23 09:55:51,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6565 states to 6565 states and 8259 transitions. [2020-12-23 09:55:51,715 INFO L78 Accepts]: Start accepts. Automaton has 6565 states and 8259 transitions. Word has length 81 [2020-12-23 09:55:51,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:51,715 INFO L481 AbstractCegarLoop]: Abstraction has 6565 states and 8259 transitions. [2020-12-23 09:55:51,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:55:51,716 INFO L276 IsEmpty]: Start isEmpty. Operand 6565 states and 8259 transitions. [2020-12-23 09:55:51,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-23 09:55:51,717 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:51,717 INFO L422 BasicCegarLoop]: trace histogram [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 09:55:51,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-23 09:55:51,717 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:51,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:51,718 INFO L82 PathProgramCache]: Analyzing trace with hash -980482721, now seen corresponding path program 1 times [2020-12-23 09:55:51,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:51,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751027414] [2020-12-23 09:55:51,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:51,791 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 09:55:51,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751027414] [2020-12-23 09:55:51,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:55:51,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:55:51,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301163699] [2020-12-23 09:55:51,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:55:51,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:51,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:55:51,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:55:51,793 INFO L87 Difference]: Start difference. First operand 6565 states and 8259 transitions. Second operand 6 states. [2020-12-23 09:55:52,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:52,738 INFO L93 Difference]: Finished difference Result 17035 states and 21695 transitions. [2020-12-23 09:55:52,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:55:52,738 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-23 09:55:52,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:52,750 INFO L225 Difference]: With dead ends: 17035 [2020-12-23 09:55:52,750 INFO L226 Difference]: Without dead ends: 10538 [2020-12-23 09:55:52,755 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 09:55:52,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10538 states. [2020-12-23 09:55:53,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10538 to 9568. [2020-12-23 09:55:53,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9568 states. [2020-12-23 09:55:53,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9568 states to 9568 states and 12062 transitions. [2020-12-23 09:55:53,555 INFO L78 Accepts]: Start accepts. Automaton has 9568 states and 12062 transitions. Word has length 81 [2020-12-23 09:55:53,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:55:53,555 INFO L481 AbstractCegarLoop]: Abstraction has 9568 states and 12062 transitions. [2020-12-23 09:55:53,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:55:53,555 INFO L276 IsEmpty]: Start isEmpty. Operand 9568 states and 12062 transitions. [2020-12-23 09:55:53,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-23 09:55:53,557 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:55:53,557 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 09:55:53,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-23 09:55:53,557 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:55:53,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:55:53,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1098414210, now seen corresponding path program 1 times [2020-12-23 09:55:53,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:55:53,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546289127] [2020-12-23 09:55:53,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:55:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:55:53,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546289127] [2020-12-23 09:55:53,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666442320] [2020-12-23 09:55:53,783 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 09:55:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:55:53,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 09:55:53,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:55:54,104 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 09:55:54,406 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:55:54,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:55:54,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-23 09:55:54,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138922418] [2020-12-23 09:55:54,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 09:55:54,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:55:54,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 09:55:54,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-12-23 09:55:54,409 INFO L87 Difference]: Start difference. First operand 9568 states and 12062 transitions. Second operand 17 states. [2020-12-23 09:55:59,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:55:59,124 INFO L93 Difference]: Finished difference Result 46981 states and 58798 transitions. [2020-12-23 09:55:59,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-23 09:55:59,125 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 82 [2020-12-23 09:55:59,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:55:59,163 INFO L225 Difference]: With dead ends: 46981 [2020-12-23 09:55:59,163 INFO L226 Difference]: Without dead ends: 38955 [2020-12-23 09:55:59,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=317, Invalid=943, Unknown=0, NotChecked=0, Total=1260 [2020-12-23 09:55:59,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38955 states. [2020-12-23 09:56:01,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38955 to 24189. [2020-12-23 09:56:01,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24189 states. [2020-12-23 09:56:01,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24189 states to 24189 states and 30448 transitions. [2020-12-23 09:56:01,853 INFO L78 Accepts]: Start accepts. Automaton has 24189 states and 30448 transitions. Word has length 82 [2020-12-23 09:56:01,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:56:01,854 INFO L481 AbstractCegarLoop]: Abstraction has 24189 states and 30448 transitions. [2020-12-23 09:56:01,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 09:56:01,854 INFO L276 IsEmpty]: Start isEmpty. Operand 24189 states and 30448 transitions. [2020-12-23 09:56:01,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-23 09:56:01,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:56:01,856 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 09:56:02,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-23 09:56:02,064 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:56:02,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:56:02,065 INFO L82 PathProgramCache]: Analyzing trace with hash 201020932, now seen corresponding path program 1 times [2020-12-23 09:56:02,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:56:02,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115308652] [2020-12-23 09:56:02,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:56:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:56:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 09:56:02,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115308652] [2020-12-23 09:56:02,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:56:02,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 09:56:02,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865466799] [2020-12-23 09:56:02,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 09:56:02,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:56:02,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 09:56:02,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 09:56:02,171 INFO L87 Difference]: Start difference. First operand 24189 states and 30448 transitions. Second operand 7 states. [2020-12-23 09:56:04,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:56:04,759 INFO L93 Difference]: Finished difference Result 50229 states and 63401 transitions. [2020-12-23 09:56:04,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:56:04,760 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-12-23 09:56:04,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:56:04,786 INFO L225 Difference]: With dead ends: 50229 [2020-12-23 09:56:04,786 INFO L226 Difference]: Without dead ends: 26272 [2020-12-23 09:56:04,799 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 09:56:04,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26272 states. [2020-12-23 09:56:07,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26272 to 26270. [2020-12-23 09:56:07,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26270 states. [2020-12-23 09:56:07,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26270 states to 26270 states and 32934 transitions. [2020-12-23 09:56:07,590 INFO L78 Accepts]: Start accepts. Automaton has 26270 states and 32934 transitions. Word has length 82 [2020-12-23 09:56:07,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:56:07,590 INFO L481 AbstractCegarLoop]: Abstraction has 26270 states and 32934 transitions. [2020-12-23 09:56:07,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 09:56:07,590 INFO L276 IsEmpty]: Start isEmpty. Operand 26270 states and 32934 transitions. [2020-12-23 09:56:07,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-23 09:56:07,592 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:56:07,592 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 09:56:07,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-23 09:56:07,593 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:56:07,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:56:07,593 INFO L82 PathProgramCache]: Analyzing trace with hash -2091708008, now seen corresponding path program 1 times [2020-12-23 09:56:07,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:56:07,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774793036] [2020-12-23 09:56:07,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:56:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:56:09,016 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:56:09,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774793036] [2020-12-23 09:56:09,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149750478] [2020-12-23 09:56:09,016 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 09:56:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:56:09,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-23 09:56:09,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:56:09,675 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 09:56:10,027 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 33 [2020-12-23 09:56:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:56:10,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:56:10,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 13] total 39 [2020-12-23 09:56:10,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929397019] [2020-12-23 09:56:10,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-12-23 09:56:10,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:56:10,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-12-23 09:56:10,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1388, Unknown=0, NotChecked=0, Total=1482 [2020-12-23 09:56:10,581 INFO L87 Difference]: Start difference. First operand 26270 states and 32934 transitions. Second operand 39 states. [2020-12-23 09:56:11,041 WARN L197 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 92 [2020-12-23 09:56:11,875 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-23 09:56:12,069 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-12-23 09:56:12,285 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2020-12-23 09:56:12,551 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-12-23 09:56:12,924 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-12-23 09:56:13,202 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-12-23 09:56:13,531 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-12-23 09:56:13,863 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-12-23 09:56:14,243 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2020-12-23 09:56:14,622 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2020-12-23 09:56:15,131 WARN L197 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2020-12-23 09:56:15,704 WARN L197 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 96 [2020-12-23 09:56:16,112 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2020-12-23 09:56:16,514 WARN L197 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-12-23 09:56:16,828 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2020-12-23 09:56:17,108 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-12-23 09:56:17,375 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-12-23 09:56:17,615 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-12-23 09:56:17,886 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-12-23 09:56:18,127 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-23 09:56:18,517 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-12-23 09:56:18,981 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-12-23 09:56:19,373 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-12-23 09:56:19,831 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-23 09:56:20,778 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-12-23 09:56:21,730 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2020-12-23 09:56:23,328 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-12-23 09:56:23,734 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-12-23 09:56:23,969 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-23 09:56:24,277 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-12-23 09:56:24,666 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-12-23 09:56:24,892 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-23 09:56:25,185 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-12-23 09:56:25,563 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-23 09:56:25,915 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-12-23 09:56:30,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:56:30,790 INFO L93 Difference]: Finished difference Result 57888 states and 74183 transitions. [2020-12-23 09:56:30,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-12-23 09:56:30,792 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 83 [2020-12-23 09:56:30,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:56:30,832 INFO L225 Difference]: With dead ends: 57888 [2020-12-23 09:56:30,832 INFO L226 Difference]: Without dead ends: 44052 [2020-12-23 09:56:30,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1766 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=1324, Invalid=7796, Unknown=0, NotChecked=0, Total=9120 [2020-12-23 09:56:30,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44052 states. [2020-12-23 09:56:33,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44052 to 17385. [2020-12-23 09:56:33,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17385 states. [2020-12-23 09:56:33,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17385 states to 17385 states and 22104 transitions. [2020-12-23 09:56:33,022 INFO L78 Accepts]: Start accepts. Automaton has 17385 states and 22104 transitions. Word has length 83 [2020-12-23 09:56:33,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:56:33,022 INFO L481 AbstractCegarLoop]: Abstraction has 17385 states and 22104 transitions. [2020-12-23 09:56:33,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-12-23 09:56:33,022 INFO L276 IsEmpty]: Start isEmpty. Operand 17385 states and 22104 transitions. [2020-12-23 09:56:33,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-23 09:56:33,023 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:56:33,023 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 09:56:33,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:56:33,224 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:56:33,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:56:33,225 INFO L82 PathProgramCache]: Analyzing trace with hash -441022536, now seen corresponding path program 1 times [2020-12-23 09:56:33,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:56:33,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395670690] [2020-12-23 09:56:33,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:56:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:56:35,227 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:56:35,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395670690] [2020-12-23 09:56:35,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693998334] [2020-12-23 09:56:35,228 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:56:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:56:35,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-23 09:56:35,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:56:37,208 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2020-12-23 09:56:38,158 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-12-23 09:56:38,750 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-12-23 09:56:39,397 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-23 09:56:40,334 WARN L197 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2020-12-23 09:56:40,392 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-23 09:56:41,851 WARN L197 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 70 [2020-12-23 09:56:41,873 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-23 09:56:41,892 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-12-23 09:56:41,970 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 09:56:42,016 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 22 disjuncts [2020-12-23 09:56:42,216 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 09:56:42,802 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 09:56:43,710 INFO L757 QuantifierPusher]: Run 30 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 09:56:45,208 INFO L757 QuantifierPusher]: Run 40 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 09:56:46,893 INFO L757 QuantifierPusher]: Run 50 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 09:56:48,724 INFO L757 QuantifierPusher]: Run 60 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 09:56:50,912 INFO L757 QuantifierPusher]: Run 70 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 09:56:53,603 INFO L757 QuantifierPusher]: Run 80 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 09:56:56,751 INFO L757 QuantifierPusher]: Run 90 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 09:57:00,559 INFO L757 QuantifierPusher]: Run 100 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 09:57:04,923 INFO L757 QuantifierPusher]: Run 110 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-23 09:57:05,693 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-23 09:57:05,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 09:57:05,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-12-23 09:57:05,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867396657] [2020-12-23 09:57:05,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-23 09:57:05,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:05,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-23 09:57:05,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=2548, Unknown=0, NotChecked=0, Total=2862 [2020-12-23 09:57:05,695 INFO L87 Difference]: Start difference. First operand 17385 states and 22104 transitions. Second operand 29 states. [2020-12-23 09:57:06,165 WARN L197 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 101 [2020-12-23 09:57:07,130 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-12-23 09:57:07,488 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-12-23 09:57:07,727 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-12-23 09:57:07,998 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-12-23 09:57:08,293 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-12-23 09:57:08,647 WARN L197 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-12-23 09:57:09,004 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-12-23 09:57:09,447 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 89 [2020-12-23 09:57:09,872 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2020-12-23 09:57:10,115 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-12-23 09:57:10,365 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-12-23 09:57:11,285 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-12-23 09:57:16,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:16,052 INFO L93 Difference]: Finished difference Result 37183 states and 48090 transitions. [2020-12-23 09:57:16,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-23 09:57:16,053 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 83 [2020-12-23 09:57:16,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:16,086 INFO L225 Difference]: With dead ends: 37183 [2020-12-23 09:57:16,086 INFO L226 Difference]: Without dead ends: 34107 [2020-12-23 09:57:16,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1575 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=742, Invalid=5738, Unknown=0, NotChecked=0, Total=6480 [2020-12-23 09:57:16,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34107 states. [2020-12-23 09:57:18,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34107 to 17367. [2020-12-23 09:57:18,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17367 states. [2020-12-23 09:57:18,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17367 states to 17367 states and 22081 transitions. [2020-12-23 09:57:18,240 INFO L78 Accepts]: Start accepts. Automaton has 17367 states and 22081 transitions. Word has length 83 [2020-12-23 09:57:18,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:18,240 INFO L481 AbstractCegarLoop]: Abstraction has 17367 states and 22081 transitions. [2020-12-23 09:57:18,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-12-23 09:57:18,240 INFO L276 IsEmpty]: Start isEmpty. Operand 17367 states and 22081 transitions. [2020-12-23 09:57:18,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-23 09:57:18,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:18,241 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 09:57:18,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-23 09:57:18,442 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:18,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:18,443 INFO L82 PathProgramCache]: Analyzing trace with hash 489273275, now seen corresponding path program 1 times [2020-12-23 09:57:18,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:18,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842293366] [2020-12-23 09:57:18,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:20,578 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:57:20,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842293366] [2020-12-23 09:57:20,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277200073] [2020-12-23 09:57:20,578 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:57:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:20,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-23 09:57:20,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:57:21,439 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 09:57:21,749 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 27 [2020-12-23 09:57:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:57:22,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:57:22,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 13] total 40 [2020-12-23 09:57:22,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200755418] [2020-12-23 09:57:22,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-12-23 09:57:22,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:22,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-12-23 09:57:22,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1452, Unknown=0, NotChecked=0, Total=1560 [2020-12-23 09:57:22,318 INFO L87 Difference]: Start difference. First operand 17367 states and 22081 transitions. Second operand 40 states. [2020-12-23 09:57:22,994 WARN L197 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 100 [2020-12-23 09:57:23,864 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-12-23 09:57:24,112 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2020-12-23 09:57:24,335 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 24 [2020-12-23 09:57:24,555 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2020-12-23 09:57:24,808 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-12-23 09:57:25,261 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 33 [2020-12-23 09:57:25,593 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2020-12-23 09:57:25,964 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-12-23 09:57:26,434 WARN L197 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2020-12-23 09:57:26,873 WARN L197 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2020-12-23 09:57:27,441 WARN L197 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2020-12-23 09:57:28,124 WARN L197 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 94 [2020-12-23 09:57:28,959 WARN L197 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 104 [2020-12-23 09:57:29,766 WARN L197 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 98 [2020-12-23 09:57:30,229 WARN L197 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2020-12-23 09:57:30,704 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2020-12-23 09:57:31,089 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-12-23 09:57:31,413 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2020-12-23 09:57:31,730 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-12-23 09:57:31,953 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-12-23 09:57:32,349 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-12-23 09:57:32,631 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-12-23 09:57:33,065 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-12-23 09:57:33,353 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-23 09:57:33,870 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-12-23 09:57:34,201 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 23 [2020-12-23 09:57:34,534 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-23 09:57:34,870 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-12-23 09:57:35,098 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-12-23 09:57:35,456 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2020-12-23 09:57:37,025 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-12-23 09:57:37,255 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-12-23 09:57:37,706 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-12-23 09:57:38,088 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2020-12-23 09:57:38,338 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-12-23 09:57:44,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:57:44,913 INFO L93 Difference]: Finished difference Result 52854 states and 68341 transitions. [2020-12-23 09:57:44,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-12-23 09:57:44,914 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 83 [2020-12-23 09:57:44,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:57:44,952 INFO L225 Difference]: With dead ends: 52854 [2020-12-23 09:57:44,952 INFO L226 Difference]: Without dead ends: 45077 [2020-12-23 09:57:44,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1384 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=1066, Invalid=5906, Unknown=0, NotChecked=0, Total=6972 [2020-12-23 09:57:44,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45077 states. [2020-12-23 09:57:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45077 to 15755. [2020-12-23 09:57:47,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15755 states. [2020-12-23 09:57:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15755 states to 15755 states and 20096 transitions. [2020-12-23 09:57:47,026 INFO L78 Accepts]: Start accepts. Automaton has 15755 states and 20096 transitions. Word has length 83 [2020-12-23 09:57:47,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:57:47,026 INFO L481 AbstractCegarLoop]: Abstraction has 15755 states and 20096 transitions. [2020-12-23 09:57:47,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-12-23 09:57:47,026 INFO L276 IsEmpty]: Start isEmpty. Operand 15755 states and 20096 transitions. [2020-12-23 09:57:47,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-23 09:57:47,027 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:57:47,028 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-23 09:57:47,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-23 09:57:47,229 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:57:47,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:57:47,230 INFO L82 PathProgramCache]: Analyzing trace with hash -15090348, now seen corresponding path program 1 times [2020-12-23 09:57:47,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:57:47,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394523038] [2020-12-23 09:57:47,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:57:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:47,827 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-12-23 09:57:48,104 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-12-23 09:57:48,276 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2020-12-23 09:57:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:57:48,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394523038] [2020-12-23 09:57:48,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560056225] [2020-12-23 09:57:48,973 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:57:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:57:49,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-23 09:57:49,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:57:49,549 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 09:57:50,052 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2020-12-23 09:57:50,878 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-12-23 09:57:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:57:50,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:57:50,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 11] total 30 [2020-12-23 09:57:50,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614688315] [2020-12-23 09:57:50,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-23 09:57:50,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:57:50,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-23 09:57:50,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=793, Unknown=0, NotChecked=0, Total=870 [2020-12-23 09:57:50,970 INFO L87 Difference]: Start difference. First operand 15755 states and 20096 transitions. Second operand 30 states. [2020-12-23 09:57:51,183 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-12-23 09:57:52,151 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2020-12-23 09:57:52,407 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2020-12-23 09:57:52,720 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-12-23 09:57:53,247 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-12-23 09:57:53,570 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-12-23 09:57:53,921 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-12-23 09:57:54,443 WARN L197 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-12-23 09:57:55,038 WARN L197 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2020-12-23 09:57:55,728 WARN L197 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 96 [2020-12-23 09:57:56,432 WARN L197 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2020-12-23 09:57:56,993 WARN L197 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2020-12-23 09:57:57,534 WARN L197 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2020-12-23 09:57:58,135 WARN L197 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2020-12-23 09:57:58,372 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-23 09:57:58,618 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-12-23 09:57:59,011 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-12-23 09:58:00,475 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-12-23 09:58:00,877 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-12-23 09:58:01,734 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-12-23 09:58:01,977 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-12-23 09:58:04,516 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2020-12-23 09:58:04,772 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-12-23 09:58:05,045 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-12-23 09:58:05,471 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-12-23 09:58:05,823 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-12-23 09:58:06,201 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-12-23 09:58:06,478 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-12-23 09:58:06,691 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-12-23 09:58:06,873 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-12-23 09:58:07,257 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-12-23 09:58:10,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:58:10,346 INFO L93 Difference]: Finished difference Result 27933 states and 35851 transitions. [2020-12-23 09:58:10,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-12-23 09:58:10,347 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 84 [2020-12-23 09:58:10,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:58:10,369 INFO L225 Difference]: With dead ends: 27933 [2020-12-23 09:58:10,369 INFO L226 Difference]: Without dead ends: 19528 [2020-12-23 09:58:10,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1399 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=779, Invalid=5227, Unknown=0, NotChecked=0, Total=6006 [2020-12-23 09:58:10,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19528 states. [2020-12-23 09:58:12,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19528 to 13376. [2020-12-23 09:58:12,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13376 states. [2020-12-23 09:58:12,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13376 states to 13376 states and 17142 transitions. [2020-12-23 09:58:12,575 INFO L78 Accepts]: Start accepts. Automaton has 13376 states and 17142 transitions. Word has length 84 [2020-12-23 09:58:12,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:58:12,575 INFO L481 AbstractCegarLoop]: Abstraction has 13376 states and 17142 transitions. [2020-12-23 09:58:12,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-23 09:58:12,575 INFO L276 IsEmpty]: Start isEmpty. Operand 13376 states and 17142 transitions. [2020-12-23 09:58:12,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-23 09:58:12,576 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:58:12,576 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] [2020-12-23 09:58:12,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-23 09:58:12,789 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:58:12,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:58:12,789 INFO L82 PathProgramCache]: Analyzing trace with hash 297950385, now seen corresponding path program 1 times [2020-12-23 09:58:12,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:58:12,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64421356] [2020-12-23 09:58:12,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:58:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:13,158 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2020-12-23 09:58:13,380 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-12-23 09:58:13,718 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-12-23 09:58:13,892 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-23 09:58:14,085 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2020-12-23 09:58:14,265 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2020-12-23 09:58:14,441 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2020-12-23 09:58:14,618 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2020-12-23 09:58:14,816 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2020-12-23 09:58:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:58:15,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64421356] [2020-12-23 09:58:15,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042352649] [2020-12-23 09:58:15,280 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 09:58:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:58:15,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-23 09:58:15,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:58:16,724 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 09:58:18,007 WARN L197 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 57 [2020-12-23 09:58:18,452 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-12-23 09:58:19,296 WARN L197 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-12-23 09:58:19,909 WARN L197 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-12-23 09:58:20,678 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-12-23 09:58:21,287 WARN L197 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-12-23 09:58:21,300 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts