/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-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 11:17:48,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 11:17:48,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 11:17:48,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 11:17:48,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 11:17:48,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 11:17:48,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 11:17:48,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 11:17:48,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 11:17:48,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 11:17:48,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 11:17:48,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 11:17:48,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 11:17:48,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 11:17:48,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 11:17:49,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 11:17:49,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 11:17:49,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 11:17:49,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 11:17:49,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 11:17:49,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 11:17:49,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 11:17:49,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 11:17:49,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 11:17:49,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 11:17:49,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 11:17:49,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 11:17:49,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 11:17:49,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 11:17:49,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 11:17:49,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 11:17:49,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 11:17:49,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 11:17:49,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 11:17:49,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 11:17:49,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 11:17:49,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 11:17:49,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 11:17:49,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 11:17:49,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 11:17:49,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 11:17:49,078 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 11:17:49,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 11:17:49,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 11:17:49,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 11:17:49,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 11:17:49,136 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 11:17:49,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 11:17:49,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 11:17:49,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 11:17:49,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 11:17:49,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 11:17:49,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 11:17:49,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 11:17:49,141 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 11:17:49,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 11:17:49,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 11:17:49,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 11:17:49,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 11:17:49,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 11:17:49,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 11:17:49,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 11:17:49,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 11:17:49,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 11:17:49,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 11:17:49,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 11:17:49,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 11:17:49,143 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 11:17:49,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 11:17:49,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 11:17:49,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 11:17:49,589 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 11:17:49,590 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 11:17:49,591 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 11:17:49,675 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a0f1e8f4d/a0c34e565e654b17a908ea9a3304ee93/FLAG410977be1 [2020-12-23 11:17:50,391 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 11:17:50,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 11:17:50,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a0f1e8f4d/a0c34e565e654b17a908ea9a3304ee93/FLAG410977be1 [2020-12-23 11:17:50,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a0f1e8f4d/a0c34e565e654b17a908ea9a3304ee93 [2020-12-23 11:17:50,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 11:17:50,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 11:17:50,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 11:17:50,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 11:17:50,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 11:17:50,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:17:50" (1/1) ... [2020-12-23 11:17:50,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2a7c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:17:50, skipping insertion in model container [2020-12-23 11:17:50,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:17:50" (1/1) ... [2020-12-23 11:17:50,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 11:17:50,529 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_13172~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__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[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_old~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[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__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[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__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[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__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[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6__m6~0,] left hand side expression in assignment: lhs: VariableLHS[~node6__m6~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_13305~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2020-12-23 11:17:50,896 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-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6326,6339] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] 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[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] 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[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] 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[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] 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[~node1____CPAchecker_TMP_0~0,] [2020-12-23 11:17:50,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:17:50,957 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_13172~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__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[~node1__m1~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_old~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[~node2__m2~0,] left hand side expression in assignment: lhs: VariableLHS[~node2__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[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~0,] left hand side expression in assignment: lhs: VariableLHS[~node3__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[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4__m4~0,] left hand side expression in assignment: lhs: VariableLHS[~node4__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[~mode4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~node5__m5~0,] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6__m6~0,] left hand side expression in assignment: lhs: VariableLHS[~node6__m6~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p1_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p4_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_13305~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2020-12-23 11:17:51,006 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-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6326,6339] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~st6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p6_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode6~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node6____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p5_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode5~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node5____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st4~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node4____CPAchecker_TMP_0~0,] 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[~node4____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] 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[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] 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[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] 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[~node1____CPAchecker_TMP_0~0,] [2020-12-23 11:17:51,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:17:51,050 INFO L208 MainTranslator]: Completed translation [2020-12-23 11:17:51,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:17:51 WrapperNode [2020-12-23 11:17:51,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 11:17:51,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 11:17:51,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 11:17:51,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 11:17:51,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:17:51" (1/1) ... [2020-12-23 11:17:51,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:17:51" (1/1) ... [2020-12-23 11:17:51,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 11:17:51,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 11:17:51,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 11:17:51,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 11:17:51,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:17:51" (1/1) ... [2020-12-23 11:17:51,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:17:51" (1/1) ... [2020-12-23 11:17:51,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:17:51" (1/1) ... [2020-12-23 11:17:51,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:17:51" (1/1) ... [2020-12-23 11:17:51,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:17:51" (1/1) ... [2020-12-23 11:17:51,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:17:51" (1/1) ... [2020-12-23 11:17:51,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:17:51" (1/1) ... [2020-12-23 11:17:51,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 11:17:51,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 11:17:51,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 11:17:51,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 11:17:51,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:17:51" (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 11:17:51,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 11:17:51,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 11:17:51,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 11:17:51,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 11:17:52,281 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 11:17:52,281 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 11:17:52,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:17:52 BoogieIcfgContainer [2020-12-23 11:17:52,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 11:17:52,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 11:17:52,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 11:17:52,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 11:17:52,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 11:17:50" (1/3) ... [2020-12-23 11:17:52,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ba493a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:17:52, skipping insertion in model container [2020-12-23 11:17:52,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:17:51" (2/3) ... [2020-12-23 11:17:52,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ba493a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:17:52, skipping insertion in model container [2020-12-23 11:17:52,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:17:52" (3/3) ... [2020-12-23 11:17:52,294 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-23 11:17:52,302 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 11:17:52,308 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 11:17:52,330 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 11:17:52,368 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 11:17:52,368 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 11:17:52,368 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 11:17:52,368 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 11:17:52,368 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 11:17:52,369 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 11:17:52,369 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 11:17:52,369 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 11:17:52,414 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-12-23 11:17:52,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 11:17:52,432 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:17:52,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:17:52,434 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:17:52,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:17:52,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1122612567, now seen corresponding path program 1 times [2020-12-23 11:17:52,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:17:52,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295341993] [2020-12-23 11:17:52,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:17:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:17:52,957 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 11:17:52,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295341993] [2020-12-23 11:17:52,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:17:52,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:17:52,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958741278] [2020-12-23 11:17:52,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:17:52,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:17:52,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:17:52,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:17:52,994 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 3 states. [2020-12-23 11:17:53,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:17:53,155 INFO L93 Difference]: Finished difference Result 260 states and 422 transitions. [2020-12-23 11:17:53,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:17:53,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-23 11:17:53,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:17:53,183 INFO L225 Difference]: With dead ends: 260 [2020-12-23 11:17:53,183 INFO L226 Difference]: Without dead ends: 179 [2020-12-23 11:17:53,188 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 11:17:53,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-12-23 11:17:53,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2020-12-23 11:17:53,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-12-23 11:17:53,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 256 transitions. [2020-12-23 11:17:53,282 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 256 transitions. Word has length 73 [2020-12-23 11:17:53,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:17:53,284 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 256 transitions. [2020-12-23 11:17:53,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:17:53,284 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 256 transitions. [2020-12-23 11:17:53,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 11:17:53,291 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:17:53,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:17:53,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 11:17:53,293 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:17:53,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:17:53,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1622464055, now seen corresponding path program 1 times [2020-12-23 11:17:53,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:17:53,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619319094] [2020-12-23 11:17:53,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:17:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:17:53,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:17:53,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619319094] [2020-12-23 11:17:53,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:17:53,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:17:53,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583308361] [2020-12-23 11:17:53,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:17:53,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:17:53,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:17:53,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:17:53,535 INFO L87 Difference]: Start difference. First operand 177 states and 256 transitions. Second operand 3 states. [2020-12-23 11:17:53,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:17:53,625 INFO L93 Difference]: Finished difference Result 429 states and 656 transitions. [2020-12-23 11:17:53,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:17:53,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-23 11:17:53,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:17:53,631 INFO L225 Difference]: With dead ends: 429 [2020-12-23 11:17:53,631 INFO L226 Difference]: Without dead ends: 295 [2020-12-23 11:17:53,634 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 11:17:53,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-12-23 11:17:53,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 293. [2020-12-23 11:17:53,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-12-23 11:17:53,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 440 transitions. [2020-12-23 11:17:53,687 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 440 transitions. Word has length 74 [2020-12-23 11:17:53,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:17:53,687 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 440 transitions. [2020-12-23 11:17:53,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:17:53,688 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 440 transitions. [2020-12-23 11:17:53,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 11:17:53,692 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:17:53,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:17:53,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 11:17:53,693 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:17:53,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:17:53,695 INFO L82 PathProgramCache]: Analyzing trace with hash 549627260, now seen corresponding path program 1 times [2020-12-23 11:17:53,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:17:53,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911928539] [2020-12-23 11:17:53,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:17:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:17:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:17:53,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911928539] [2020-12-23 11:17:53,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:17:53,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:17:53,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596940856] [2020-12-23 11:17:53,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:17:53,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:17:53,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:17:53,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:17:53,825 INFO L87 Difference]: Start difference. First operand 293 states and 440 transitions. Second operand 3 states. [2020-12-23 11:17:53,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:17:53,876 INFO L93 Difference]: Finished difference Result 761 states and 1182 transitions. [2020-12-23 11:17:53,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:17:53,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-23 11:17:53,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:17:53,881 INFO L225 Difference]: With dead ends: 761 [2020-12-23 11:17:53,881 INFO L226 Difference]: Without dead ends: 511 [2020-12-23 11:17:53,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:17:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-12-23 11:17:53,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 509. [2020-12-23 11:17:53,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-12-23 11:17:53,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 780 transitions. [2020-12-23 11:17:53,925 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 780 transitions. Word has length 75 [2020-12-23 11:17:53,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:17:53,925 INFO L481 AbstractCegarLoop]: Abstraction has 509 states and 780 transitions. [2020-12-23 11:17:53,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:17:53,926 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 780 transitions. [2020-12-23 11:17:53,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 11:17:53,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:17:53,930 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:17:53,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 11:17:53,930 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:17:53,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:17:53,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1347673334, now seen corresponding path program 1 times [2020-12-23 11:17:53,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:17:53,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861707338] [2020-12-23 11:17:53,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:17:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:17:54,057 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 11:17:54,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861707338] [2020-12-23 11:17:54,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:17:54,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:17:54,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633454962] [2020-12-23 11:17:54,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:17:54,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:17:54,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:17:54,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:17:54,061 INFO L87 Difference]: Start difference. First operand 509 states and 780 transitions. Second operand 3 states. [2020-12-23 11:17:54,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:17:54,130 INFO L93 Difference]: Finished difference Result 1377 states and 2150 transitions. [2020-12-23 11:17:54,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:17:54,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-23 11:17:54,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:17:54,136 INFO L225 Difference]: With dead ends: 1377 [2020-12-23 11:17:54,137 INFO L226 Difference]: Without dead ends: 911 [2020-12-23 11:17:54,139 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 11:17:54,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-12-23 11:17:54,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 909. [2020-12-23 11:17:54,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 909 states. [2020-12-23 11:17:54,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1404 transitions. [2020-12-23 11:17:54,195 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1404 transitions. Word has length 76 [2020-12-23 11:17:54,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:17:54,195 INFO L481 AbstractCegarLoop]: Abstraction has 909 states and 1404 transitions. [2020-12-23 11:17:54,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:17:54,196 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1404 transitions. [2020-12-23 11:17:54,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 11:17:54,197 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:17:54,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:17:54,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 11:17:54,198 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:17:54,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:17:54,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1762980839, now seen corresponding path program 1 times [2020-12-23 11:17:54,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:17:54,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208646475] [2020-12-23 11:17:54,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:17:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:17:54,276 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 11:17:54,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208646475] [2020-12-23 11:17:54,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:17:54,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:17:54,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822377736] [2020-12-23 11:17:54,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:17:54,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:17:54,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:17:54,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:17:54,279 INFO L87 Difference]: Start difference. First operand 909 states and 1404 transitions. Second operand 3 states. [2020-12-23 11:17:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:17:54,373 INFO L93 Difference]: Finished difference Result 2513 states and 3918 transitions. [2020-12-23 11:17:54,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:17:54,375 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-23 11:17:54,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:17:54,384 INFO L225 Difference]: With dead ends: 2513 [2020-12-23 11:17:54,384 INFO L226 Difference]: Without dead ends: 1647 [2020-12-23 11:17:54,386 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 11:17:54,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2020-12-23 11:17:54,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1645. [2020-12-23 11:17:54,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1645 states. [2020-12-23 11:17:54,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2540 transitions. [2020-12-23 11:17:54,492 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2540 transitions. Word has length 77 [2020-12-23 11:17:54,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:17:54,493 INFO L481 AbstractCegarLoop]: Abstraction has 1645 states and 2540 transitions. [2020-12-23 11:17:54,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:17:54,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2540 transitions. [2020-12-23 11:17:54,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 11:17:54,494 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:17:54,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:17:54,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 11:17:54,495 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:17:54,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:17:54,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1296361934, now seen corresponding path program 1 times [2020-12-23 11:17:54,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:17:54,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595935519] [2020-12-23 11:17:54,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:17:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:17:54,637 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 11:17:54,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595935519] [2020-12-23 11:17:54,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:17:54,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:17:54,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907937661] [2020-12-23 11:17:54,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:17:54,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:17:54,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:17:54,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:17:54,639 INFO L87 Difference]: Start difference. First operand 1645 states and 2540 transitions. Second operand 6 states. [2020-12-23 11:17:55,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:17:55,176 INFO L93 Difference]: Finished difference Result 4833 states and 7502 transitions. [2020-12-23 11:17:55,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:17:55,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-23 11:17:55,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:17:55,193 INFO L225 Difference]: With dead ends: 4833 [2020-12-23 11:17:55,193 INFO L226 Difference]: Without dead ends: 3231 [2020-12-23 11:17:55,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:17:55,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2020-12-23 11:17:55,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 3229. [2020-12-23 11:17:55,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3229 states. [2020-12-23 11:17:55,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3229 states to 3229 states and 4988 transitions. [2020-12-23 11:17:55,413 INFO L78 Accepts]: Start accepts. Automaton has 3229 states and 4988 transitions. Word has length 78 [2020-12-23 11:17:55,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:17:55,414 INFO L481 AbstractCegarLoop]: Abstraction has 3229 states and 4988 transitions. [2020-12-23 11:17:55,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:17:55,414 INFO L276 IsEmpty]: Start isEmpty. Operand 3229 states and 4988 transitions. [2020-12-23 11:17:55,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 11:17:55,415 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:17:55,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:17:55,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 11:17:55,417 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:17:55,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:17:55,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1156574829, now seen corresponding path program 1 times [2020-12-23 11:17:55,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:17:55,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971352091] [2020-12-23 11:17:55,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:17:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:17:55,569 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 11:17:55,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971352091] [2020-12-23 11:17:55,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:17:55,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:17:55,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199571321] [2020-12-23 11:17:55,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:17:55,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:17:55,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:17:55,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:17:55,573 INFO L87 Difference]: Start difference. First operand 3229 states and 4988 transitions. Second operand 6 states. [2020-12-23 11:17:56,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:17:56,271 INFO L93 Difference]: Finished difference Result 9569 states and 14814 transitions. [2020-12-23 11:17:56,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:17:56,272 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-23 11:17:56,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:17:56,305 INFO L225 Difference]: With dead ends: 9569 [2020-12-23 11:17:56,306 INFO L226 Difference]: Without dead ends: 6383 [2020-12-23 11:17:56,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:17:56,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6383 states. [2020-12-23 11:17:56,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6383 to 6381. [2020-12-23 11:17:56,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6381 states. [2020-12-23 11:17:56,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 9836 transitions. [2020-12-23 11:17:56,777 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 9836 transitions. Word has length 78 [2020-12-23 11:17:56,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:17:56,778 INFO L481 AbstractCegarLoop]: Abstraction has 6381 states and 9836 transitions. [2020-12-23 11:17:56,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:17:56,778 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 9836 transitions. [2020-12-23 11:17:56,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 11:17:56,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:17:56,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:17:56,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 11:17:56,780 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:17:56,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:17:56,780 INFO L82 PathProgramCache]: Analyzing trace with hash -290454766, now seen corresponding path program 1 times [2020-12-23 11:17:56,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:17:56,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915421878] [2020-12-23 11:17:56,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:17:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:17:56,865 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 11:17:56,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915421878] [2020-12-23 11:17:56,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:17:56,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:17:56,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933313562] [2020-12-23 11:17:56,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:17:56,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:17:56,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:17:56,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:17:56,868 INFO L87 Difference]: Start difference. First operand 6381 states and 9836 transitions. Second operand 5 states. [2020-12-23 11:17:57,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:17:57,508 INFO L93 Difference]: Finished difference Result 12719 states and 19629 transitions. [2020-12-23 11:17:57,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:17:57,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-12-23 11:17:57,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:17:57,541 INFO L225 Difference]: With dead ends: 12719 [2020-12-23 11:17:57,542 INFO L226 Difference]: Without dead ends: 6381 [2020-12-23 11:17:57,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 11:17:57,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6381 states. [2020-12-23 11:17:58,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6381 to 6381. [2020-12-23 11:17:58,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6381 states. [2020-12-23 11:17:58,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 9772 transitions. [2020-12-23 11:17:58,052 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 9772 transitions. Word has length 78 [2020-12-23 11:17:58,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:17:58,052 INFO L481 AbstractCegarLoop]: Abstraction has 6381 states and 9772 transitions. [2020-12-23 11:17:58,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:17:58,053 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 9772 transitions. [2020-12-23 11:17:58,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 11:17:58,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:17:58,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:17:58,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 11:17:58,054 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:17:58,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:17:58,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1754526323, now seen corresponding path program 1 times [2020-12-23 11:17:58,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:17:58,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395199263] [2020-12-23 11:17:58,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:17:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:17:58,160 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 11:17:58,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395199263] [2020-12-23 11:17:58,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:17:58,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:17:58,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287160893] [2020-12-23 11:17:58,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:17:58,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:17:58,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:17:58,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:17:58,163 INFO L87 Difference]: Start difference. First operand 6381 states and 9772 transitions. Second operand 5 states. [2020-12-23 11:17:58,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:17:58,754 INFO L93 Difference]: Finished difference Result 12719 states and 19501 transitions. [2020-12-23 11:17:58,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:17:58,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-12-23 11:17:58,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:17:58,789 INFO L225 Difference]: With dead ends: 12719 [2020-12-23 11:17:58,789 INFO L226 Difference]: Without dead ends: 6381 [2020-12-23 11:17:58,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 11:17:58,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6381 states. [2020-12-23 11:17:59,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6381 to 6381. [2020-12-23 11:17:59,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6381 states. [2020-12-23 11:17:59,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 9708 transitions. [2020-12-23 11:17:59,293 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 9708 transitions. Word has length 78 [2020-12-23 11:17:59,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:17:59,293 INFO L481 AbstractCegarLoop]: Abstraction has 6381 states and 9708 transitions. [2020-12-23 11:17:59,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:17:59,293 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 9708 transitions. [2020-12-23 11:17:59,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 11:17:59,294 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:17:59,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:17:59,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 11:17:59,295 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:17:59,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:17:59,295 INFO L82 PathProgramCache]: Analyzing trace with hash -427141134, now seen corresponding path program 1 times [2020-12-23 11:17:59,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:17:59,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213438668] [2020-12-23 11:17:59,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:17:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:17:59,516 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 11:17:59,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213438668] [2020-12-23 11:17:59,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:17:59,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:17:59,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410724098] [2020-12-23 11:17:59,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:17:59,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:17:59,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:17:59,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:17:59,519 INFO L87 Difference]: Start difference. First operand 6381 states and 9708 transitions. Second operand 8 states. [2020-12-23 11:18:04,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:18:04,011 INFO L93 Difference]: Finished difference Result 76099 states and 116023 transitions. [2020-12-23 11:18:04,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 11:18:04,017 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-12-23 11:18:04,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:18:04,184 INFO L225 Difference]: With dead ends: 76099 [2020-12-23 11:18:04,184 INFO L226 Difference]: Without dead ends: 69761 [2020-12-23 11:18:04,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-12-23 11:18:04,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69761 states. [2020-12-23 11:18:06,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69761 to 12717. [2020-12-23 11:18:06,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12717 states. [2020-12-23 11:18:06,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12717 states to 12717 states and 19116 transitions. [2020-12-23 11:18:06,080 INFO L78 Accepts]: Start accepts. Automaton has 12717 states and 19116 transitions. Word has length 78 [2020-12-23 11:18:06,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:18:06,080 INFO L481 AbstractCegarLoop]: Abstraction has 12717 states and 19116 transitions. [2020-12-23 11:18:06,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:18:06,081 INFO L276 IsEmpty]: Start isEmpty. Operand 12717 states and 19116 transitions. [2020-12-23 11:18:06,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 11:18:06,081 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:18:06,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:18:06,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 11:18:06,082 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:18:06,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:18:06,083 INFO L82 PathProgramCache]: Analyzing trace with hash 912411086, now seen corresponding path program 1 times [2020-12-23 11:18:06,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:18:06,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183369442] [2020-12-23 11:18:06,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:18:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:18:06,161 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 11:18:06,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183369442] [2020-12-23 11:18:06,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:18:06,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:18:06,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362678509] [2020-12-23 11:18:06,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:18:06,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:18:06,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:18:06,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:18:06,165 INFO L87 Difference]: Start difference. First operand 12717 states and 19116 transitions. Second operand 3 states. [2020-12-23 11:18:08,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:18:08,774 INFO L93 Difference]: Finished difference Result 36657 states and 54830 transitions. [2020-12-23 11:18:08,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:18:08,775 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-23 11:18:08,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:18:08,813 INFO L225 Difference]: With dead ends: 36657 [2020-12-23 11:18:08,814 INFO L226 Difference]: Without dead ends: 23983 [2020-12-23 11:18:08,832 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 11:18:08,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23983 states. [2020-12-23 11:18:10,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23983 to 23725. [2020-12-23 11:18:10,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23725 states. [2020-12-23 11:18:10,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23725 states to 23725 states and 34860 transitions. [2020-12-23 11:18:10,972 INFO L78 Accepts]: Start accepts. Automaton has 23725 states and 34860 transitions. Word has length 80 [2020-12-23 11:18:10,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:18:10,973 INFO L481 AbstractCegarLoop]: Abstraction has 23725 states and 34860 transitions. [2020-12-23 11:18:10,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:18:10,973 INFO L276 IsEmpty]: Start isEmpty. Operand 23725 states and 34860 transitions. [2020-12-23 11:18:10,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 11:18:10,974 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:18:10,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:18:10,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 11:18:10,974 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:18:10,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:18:10,975 INFO L82 PathProgramCache]: Analyzing trace with hash 933413741, now seen corresponding path program 1 times [2020-12-23 11:18:10,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:18:10,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219165295] [2020-12-23 11:18:10,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:18:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:18:11,314 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 11:18:11,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219165295] [2020-12-23 11:18:11,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:18:11,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:18:11,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910276675] [2020-12-23 11:18:11,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:18:11,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:18:11,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:18:11,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:18:11,316 INFO L87 Difference]: Start difference. First operand 23725 states and 34860 transitions. Second operand 8 states. [2020-12-23 11:18:15,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:18:15,002 INFO L93 Difference]: Finished difference Result 59187 states and 87215 transitions. [2020-12-23 11:18:15,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:18:15,003 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-23 11:18:15,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:18:15,056 INFO L225 Difference]: With dead ends: 59187 [2020-12-23 11:18:15,057 INFO L226 Difference]: Without dead ends: 35505 [2020-12-23 11:18:15,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2020-12-23 11:18:15,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35505 states. [2020-12-23 11:18:17,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35505 to 23725. [2020-12-23 11:18:17,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23725 states. [2020-12-23 11:18:17,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23725 states to 23725 states and 34604 transitions. [2020-12-23 11:18:17,595 INFO L78 Accepts]: Start accepts. Automaton has 23725 states and 34604 transitions. Word has length 80 [2020-12-23 11:18:17,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:18:17,596 INFO L481 AbstractCegarLoop]: Abstraction has 23725 states and 34604 transitions. [2020-12-23 11:18:17,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:18:17,596 INFO L276 IsEmpty]: Start isEmpty. Operand 23725 states and 34604 transitions. [2020-12-23 11:18:17,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-23 11:18:17,596 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:18:17,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:18:17,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 11:18:17,597 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:18:17,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:18:17,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1558777127, now seen corresponding path program 1 times [2020-12-23 11:18:17,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:18:17,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30604469] [2020-12-23 11:18:17,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:18:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:18:17,648 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 11:18:17,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30604469] [2020-12-23 11:18:17,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:18:17,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:18:17,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223515597] [2020-12-23 11:18:17,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:18:17,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:18:17,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:18:17,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:18:17,650 INFO L87 Difference]: Start difference. First operand 23725 states and 34604 transitions. Second operand 3 states. [2020-12-23 11:18:20,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:18:20,704 INFO L93 Difference]: Finished difference Result 46516 states and 68402 transitions. [2020-12-23 11:18:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:18:20,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-23 11:18:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:18:20,749 INFO L225 Difference]: With dead ends: 46516 [2020-12-23 11:18:20,750 INFO L226 Difference]: Without dead ends: 33841 [2020-12-23 11:18:20,765 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 11:18:20,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33841 states. [2020-12-23 11:18:23,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33841 to 33839. [2020-12-23 11:18:23,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33839 states. [2020-12-23 11:18:23,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33839 states to 33839 states and 49198 transitions. [2020-12-23 11:18:23,878 INFO L78 Accepts]: Start accepts. Automaton has 33839 states and 49198 transitions. Word has length 81 [2020-12-23 11:18:23,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:18:23,878 INFO L481 AbstractCegarLoop]: Abstraction has 33839 states and 49198 transitions. [2020-12-23 11:18:23,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:18:23,879 INFO L276 IsEmpty]: Start isEmpty. Operand 33839 states and 49198 transitions. [2020-12-23 11:18:23,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-23 11:18:23,879 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:18:23,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:18:23,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 11:18:23,880 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:18:23,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:18:23,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1130854413, now seen corresponding path program 1 times [2020-12-23 11:18:23,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:18:23,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795455376] [2020-12-23 11:18:23,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:18:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:18:23,968 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 11:18:23,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795455376] [2020-12-23 11:18:23,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:18:23,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:18:23,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648047815] [2020-12-23 11:18:23,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:18:23,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:18:23,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:18:23,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:18:23,970 INFO L87 Difference]: Start difference. First operand 33839 states and 49198 transitions. Second operand 5 states. [2020-12-23 11:18:29,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:18:29,625 INFO L93 Difference]: Finished difference Result 60987 states and 88393 transitions. [2020-12-23 11:18:29,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 11:18:29,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-23 11:18:29,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:18:29,687 INFO L225 Difference]: With dead ends: 60987 [2020-12-23 11:18:29,687 INFO L226 Difference]: Without dead ends: 60985 [2020-12-23 11:18:29,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:18:29,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60985 states. [2020-12-23 11:18:33,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60985 to 34863. [2020-12-23 11:18:33,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34863 states. [2020-12-23 11:18:33,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34863 states to 34863 states and 50094 transitions. [2020-12-23 11:18:33,569 INFO L78 Accepts]: Start accepts. Automaton has 34863 states and 50094 transitions. Word has length 81 [2020-12-23 11:18:33,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:18:33,569 INFO L481 AbstractCegarLoop]: Abstraction has 34863 states and 50094 transitions. [2020-12-23 11:18:33,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:18:33,569 INFO L276 IsEmpty]: Start isEmpty. Operand 34863 states and 50094 transitions. [2020-12-23 11:18:33,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-23 11:18:33,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:18:33,586 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:18:33,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 11:18:33,586 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:18:33,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:18:33,587 INFO L82 PathProgramCache]: Analyzing trace with hash 905576252, now seen corresponding path program 1 times [2020-12-23 11:18:33,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:18:33,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827473764] [2020-12-23 11:18:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:18:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:18:33,749 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-23 11:18:33,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827473764] [2020-12-23 11:18:33,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:18:33,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:18:33,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863612877] [2020-12-23 11:18:33,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:18:33,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:18:33,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:18:33,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:18:33,751 INFO L87 Difference]: Start difference. First operand 34863 states and 50094 transitions. Second operand 8 states. [2020-12-23 11:18:55,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:18:55,504 INFO L93 Difference]: Finished difference Result 250237 states and 359413 transitions. [2020-12-23 11:18:55,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:18:55,505 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-12-23 11:18:55,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:18:55,844 INFO L225 Difference]: With dead ends: 250237 [2020-12-23 11:18:55,844 INFO L226 Difference]: Without dead ends: 215419 [2020-12-23 11:18:55,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-23 11:18:56,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215419 states. [2020-12-23 11:19:04,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215419 to 69679. [2020-12-23 11:19:04,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69679 states. [2020-12-23 11:19:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69679 states to 69679 states and 99758 transitions. [2020-12-23 11:19:04,848 INFO L78 Accepts]: Start accepts. Automaton has 69679 states and 99758 transitions. Word has length 112 [2020-12-23 11:19:04,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:19:04,848 INFO L481 AbstractCegarLoop]: Abstraction has 69679 states and 99758 transitions. [2020-12-23 11:19:04,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:19:04,848 INFO L276 IsEmpty]: Start isEmpty. Operand 69679 states and 99758 transitions. [2020-12-23 11:19:04,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-23 11:19:04,859 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:19:04,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:19:04,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 11:19:04,859 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:19:04,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:19:04,860 INFO L82 PathProgramCache]: Analyzing trace with hash -818965810, now seen corresponding path program 1 times [2020-12-23 11:19:04,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:19:04,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943556850] [2020-12-23 11:19:04,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:19:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:19:05,003 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-23 11:19:05,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943556850] [2020-12-23 11:19:05,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:19:05,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:19:05,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908292137] [2020-12-23 11:19:05,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:19:05,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:19:05,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:19:05,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:19:05,005 INFO L87 Difference]: Start difference. First operand 69679 states and 99758 transitions. Second operand 8 states. [2020-12-23 11:19:33,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:19:33,570 INFO L93 Difference]: Finished difference Result 285053 states and 409077 transitions. [2020-12-23 11:19:33,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:19:33,571 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-12-23 11:19:33,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:19:33,984 INFO L225 Difference]: With dead ends: 285053 [2020-12-23 11:19:33,984 INFO L226 Difference]: Without dead ends: 250235 [2020-12-23 11:19:34,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-23 11:19:34,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250235 states. [2020-12-23 11:19:50,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250235 to 121967. [2020-12-23 11:19:50,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121967 states. [2020-12-23 11:19:50,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121967 states to 121967 states and 173934 transitions. [2020-12-23 11:19:50,493 INFO L78 Accepts]: Start accepts. Automaton has 121967 states and 173934 transitions. Word has length 112 [2020-12-23 11:19:50,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:19:50,494 INFO L481 AbstractCegarLoop]: Abstraction has 121967 states and 173934 transitions. [2020-12-23 11:19:50,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:19:50,494 INFO L276 IsEmpty]: Start isEmpty. Operand 121967 states and 173934 transitions. [2020-12-23 11:19:50,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-23 11:19:50,506 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:19:50,506 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:19:50,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 11:19:50,507 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:19:50,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:19:50,508 INFO L82 PathProgramCache]: Analyzing trace with hash 334980296, now seen corresponding path program 1 times [2020-12-23 11:19:50,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:19:50,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580099529] [2020-12-23 11:19:50,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:19:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:19:50,674 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-23 11:19:50,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580099529] [2020-12-23 11:19:50,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:19:50,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:19:50,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722489717] [2020-12-23 11:19:50,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:19:50,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:19:50,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:19:50,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:19:50,677 INFO L87 Difference]: Start difference. First operand 121967 states and 173934 transitions. Second operand 8 states. [2020-12-23 11:20:26,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:20:26,542 INFO L93 Difference]: Finished difference Result 319869 states and 458741 transitions. [2020-12-23 11:20:26,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:20:26,543 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-12-23 11:20:26,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:20:27,149 INFO L225 Difference]: With dead ends: 319869 [2020-12-23 11:20:27,149 INFO L226 Difference]: Without dead ends: 285051 [2020-12-23 11:20:27,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-23 11:20:27,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285051 states. [2020-12-23 11:20:48,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285051 to 156783. [2020-12-23 11:20:48,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156783 states. [2020-12-23 11:20:48,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156783 states to 156783 states and 223598 transitions. [2020-12-23 11:20:48,962 INFO L78 Accepts]: Start accepts. Automaton has 156783 states and 223598 transitions. Word has length 112 [2020-12-23 11:20:48,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:20:48,963 INFO L481 AbstractCegarLoop]: Abstraction has 156783 states and 223598 transitions. [2020-12-23 11:20:48,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:20:48,963 INFO L276 IsEmpty]: Start isEmpty. Operand 156783 states and 223598 transitions. [2020-12-23 11:20:48,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-23 11:20:48,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:20:48,975 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:20:48,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 11:20:48,975 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:20:48,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:20:48,976 INFO L82 PathProgramCache]: Analyzing trace with hash -522920382, now seen corresponding path program 1 times [2020-12-23 11:20:48,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:20:48,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862656181] [2020-12-23 11:20:48,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:20:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:20:49,204 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-23 11:20:49,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862656181] [2020-12-23 11:20:49,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:20:49,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:20:49,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279732284] [2020-12-23 11:20:49,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:20:49,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:20:49,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:20:49,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:20:49,207 INFO L87 Difference]: Start difference. First operand 156783 states and 223598 transitions. Second operand 8 states. [2020-12-23 11:21:31,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:21:31,973 INFO L93 Difference]: Finished difference Result 354685 states and 508405 transitions. [2020-12-23 11:21:31,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:21:31,973 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-12-23 11:21:31,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:21:32,505 INFO L225 Difference]: With dead ends: 354685 [2020-12-23 11:21:32,505 INFO L226 Difference]: Without dead ends: 319867 [2020-12-23 11:21:32,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-23 11:21:32,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319867 states.