/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.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 21:06:44,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 21:06:44,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 21:06:44,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 21:06:44,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 21:06:44,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 21:06:44,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 21:06:44,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 21:06:44,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 21:06:44,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 21:06:44,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 21:06:44,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 21:06:44,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 21:06:44,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 21:06:44,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 21:06:44,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 21:06:44,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 21:06:44,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 21:06:44,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 21:06:44,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 21:06:44,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 21:06:44,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 21:06:44,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 21:06:44,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 21:06:44,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 21:06:44,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 21:06:44,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 21:06:44,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 21:06:44,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 21:06:44,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 21:06:44,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 21:06:44,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 21:06:44,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 21:06:44,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 21:06:44,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 21:06:44,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 21:06:44,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 21:06:44,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 21:06:44,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 21:06:44,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 21:06:44,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 21:06:44,881 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 21:06:44,939 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 21:06:44,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 21:06:44,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 21:06:44,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 21:06:44,946 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 21:06:44,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 21:06:44,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 21:06:44,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 21:06:44,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 21:06:44,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 21:06:44,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 21:06:44,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 21:06:44,949 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 21:06:44,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 21:06:44,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 21:06:44,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 21:06:44,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 21:06:44,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 21:06:44,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 21:06:44,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 21:06:44,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 21:06:44,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 21:06:44,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 21:06:44,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 21:06:44,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 21:06:44,952 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 21:06:45,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 21:06:45,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 21:06:45,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 21:06:45,444 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 21:06:45,445 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 21:06:45,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2021-01-06 21:06:45,545 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5db9797bb/3e1245a9197b4890914f04da8906c243/FLAGe158402f9 [2021-01-06 21:06:46,205 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 21:06:46,206 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2021-01-06 21:06:46,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5db9797bb/3e1245a9197b4890914f04da8906c243/FLAGe158402f9 [2021-01-06 21:06:46,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5db9797bb/3e1245a9197b4890914f04da8906c243 [2021-01-06 21:06:46,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 21:06:46,500 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 21:06:46,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 21:06:46,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 21:06:46,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 21:06:46,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 09:06:46" (1/1) ... [2021-01-06 21:06:46,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fbd22dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:06:46, skipping insertion in model container [2021-01-06 21:06:46,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 09:06:46" (1/1) ... [2021-01-06 21:06:46,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 21:06:46,596 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_13334~0,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[~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_13467~0,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,] [2021-01-06 21:06:46,839 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.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6292,6305] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] 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[~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[~send1~0,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,] left hand side expression in assignment: lhs: VariableLHS[~__return_13560~0,GLOBAL] [2021-01-06 21:06:46,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 21:06:46,903 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_13334~0,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[~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_13467~0,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,] [2021-01-06 21:06:46,984 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.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6292,6305] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] 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[~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[~send1~0,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,] left hand side expression in assignment: lhs: VariableLHS[~__return_13560~0,GLOBAL] [2021-01-06 21:06:47,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 21:06:47,053 INFO L208 MainTranslator]: Completed translation [2021-01-06 21:06:47,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:06:47 WrapperNode [2021-01-06 21:06:47,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 21:06:47,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 21:06:47,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 21:06:47,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 21:06:47,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:06:47" (1/1) ... [2021-01-06 21:06:47,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:06:47" (1/1) ... [2021-01-06 21:06:47,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 21:06:47,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 21:06:47,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 21:06:47,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 21:06:47,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:06:47" (1/1) ... [2021-01-06 21:06:47,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:06:47" (1/1) ... [2021-01-06 21:06:47,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:06:47" (1/1) ... [2021-01-06 21:06:47,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:06:47" (1/1) ... [2021-01-06 21:06:47,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:06:47" (1/1) ... [2021-01-06 21:06:47,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:06:47" (1/1) ... [2021-01-06 21:06:47,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:06:47" (1/1) ... [2021-01-06 21:06:47,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 21:06:47,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 21:06:47,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 21:06:47,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 21:06:47,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:06:47" (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 [2021-01-06 21:06:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 21:06:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 21:06:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 21:06:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 21:06:48,241 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 21:06:48,242 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 21:06:48,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 09:06:48 BoogieIcfgContainer [2021-01-06 21:06:48,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 21:06:48,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 21:06:48,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 21:06:48,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 21:06:48,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 09:06:46" (1/3) ... [2021-01-06 21:06:48,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b13909c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 09:06:48, skipping insertion in model container [2021-01-06 21:06:48,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 09:06:47" (2/3) ... [2021-01-06 21:06:48,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b13909c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 09:06:48, skipping insertion in model container [2021-01-06 21:06:48,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 09:06:48" (3/3) ... [2021-01-06 21:06:48,256 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2021-01-06 21:06:48,264 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 21:06:48,271 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 21:06:48,295 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 21:06:48,326 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 21:06:48,326 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 21:06:48,326 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 21:06:48,327 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 21:06:48,327 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 21:06:48,327 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 21:06:48,327 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 21:06:48,327 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 21:06:48,349 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2021-01-06 21:06:48,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 21:06:48,360 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:06:48,361 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] [2021-01-06 21:06:48,362 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:06:48,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:06:48,371 INFO L82 PathProgramCache]: Analyzing trace with hash -866113193, now seen corresponding path program 1 times [2021-01-06 21:06:48,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:06:48,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12686306] [2021-01-06 21:06:48,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:06:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:06:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:06:48,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12686306] [2021-01-06 21:06:48,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:06:48,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:06:48,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348262952] [2021-01-06 21:06:48,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:06:48,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:06:48,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:06:48,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:06:48,951 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 3 states. [2021-01-06 21:06:49,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:06:49,049 INFO L93 Difference]: Finished difference Result 254 states and 416 transitions. [2021-01-06 21:06:49,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:06:49,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2021-01-06 21:06:49,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:06:49,069 INFO L225 Difference]: With dead ends: 254 [2021-01-06 21:06:49,070 INFO L226 Difference]: Without dead ends: 175 [2021-01-06 21:06:49,075 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 [2021-01-06 21:06:49,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-01-06 21:06:49,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2021-01-06 21:06:49,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2021-01-06 21:06:49,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 250 transitions. [2021-01-06 21:06:49,155 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 250 transitions. Word has length 72 [2021-01-06 21:06:49,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:06:49,158 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 250 transitions. [2021-01-06 21:06:49,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:06:49,159 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 250 transitions. [2021-01-06 21:06:49,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 21:06:49,210 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:06:49,210 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] [2021-01-06 21:06:49,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 21:06:49,211 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:06:49,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:06:49,213 INFO L82 PathProgramCache]: Analyzing trace with hash -566031041, now seen corresponding path program 1 times [2021-01-06 21:06:49,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:06:49,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094607789] [2021-01-06 21:06:49,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:06:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:06:49,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:06:49,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094607789] [2021-01-06 21:06:49,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:06:49,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:06:49,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207635869] [2021-01-06 21:06:49,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:06:49,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:06:49,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:06:49,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:06:49,409 INFO L87 Difference]: Start difference. First operand 173 states and 250 transitions. Second operand 3 states. [2021-01-06 21:06:49,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:06:49,483 INFO L93 Difference]: Finished difference Result 417 states and 638 transitions. [2021-01-06 21:06:49,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:06:49,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2021-01-06 21:06:49,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:06:49,495 INFO L225 Difference]: With dead ends: 417 [2021-01-06 21:06:49,496 INFO L226 Difference]: Without dead ends: 287 [2021-01-06 21:06:49,501 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 [2021-01-06 21:06:49,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-01-06 21:06:49,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2021-01-06 21:06:49,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2021-01-06 21:06:49,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 428 transitions. [2021-01-06 21:06:49,582 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 428 transitions. Word has length 73 [2021-01-06 21:06:49,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:06:49,583 INFO L481 AbstractCegarLoop]: Abstraction has 285 states and 428 transitions. [2021-01-06 21:06:49,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:06:49,584 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 428 transitions. [2021-01-06 21:06:49,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 21:06:49,586 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:06:49,587 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] [2021-01-06 21:06:49,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 21:06:49,588 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:06:49,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:06:49,590 INFO L82 PathProgramCache]: Analyzing trace with hash -739923133, now seen corresponding path program 1 times [2021-01-06 21:06:49,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:06:49,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236166471] [2021-01-06 21:06:49,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:06:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:06:49,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:06:49,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236166471] [2021-01-06 21:06:49,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:06:49,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:06:49,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737426688] [2021-01-06 21:06:49,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:06:49,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:06:49,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:06:49,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:06:49,805 INFO L87 Difference]: Start difference. First operand 285 states and 428 transitions. Second operand 3 states. [2021-01-06 21:06:49,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:06:49,903 INFO L93 Difference]: Finished difference Result 737 states and 1146 transitions. [2021-01-06 21:06:49,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:06:49,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2021-01-06 21:06:49,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:06:49,912 INFO L225 Difference]: With dead ends: 737 [2021-01-06 21:06:49,913 INFO L226 Difference]: Without dead ends: 495 [2021-01-06 21:06:49,918 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 [2021-01-06 21:06:49,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-01-06 21:06:49,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 493. [2021-01-06 21:06:49,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2021-01-06 21:06:49,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 756 transitions. [2021-01-06 21:06:49,977 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 756 transitions. Word has length 74 [2021-01-06 21:06:49,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:06:49,985 INFO L481 AbstractCegarLoop]: Abstraction has 493 states and 756 transitions. [2021-01-06 21:06:49,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:06:49,986 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 756 transitions. [2021-01-06 21:06:49,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-01-06 21:06:49,989 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:06:49,989 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] [2021-01-06 21:06:49,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 21:06:49,991 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:06:49,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:06:49,993 INFO L82 PathProgramCache]: Analyzing trace with hash 330068461, now seen corresponding path program 1 times [2021-01-06 21:06:49,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:06:49,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799659883] [2021-01-06 21:06:49,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:06:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:06:50,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:06:50,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799659883] [2021-01-06 21:06:50,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:06:50,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:06:50,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160896349] [2021-01-06 21:06:50,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:06:50,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:06:50,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:06:50,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:06:50,107 INFO L87 Difference]: Start difference. First operand 493 states and 756 transitions. Second operand 3 states. [2021-01-06 21:06:50,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:06:50,192 INFO L93 Difference]: Finished difference Result 1329 states and 2078 transitions. [2021-01-06 21:06:50,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:06:50,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2021-01-06 21:06:50,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:06:50,206 INFO L225 Difference]: With dead ends: 1329 [2021-01-06 21:06:50,206 INFO L226 Difference]: Without dead ends: 879 [2021-01-06 21:06:50,209 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 [2021-01-06 21:06:50,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2021-01-06 21:06:50,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2021-01-06 21:06:50,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2021-01-06 21:06:50,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1356 transitions. [2021-01-06 21:06:50,290 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1356 transitions. Word has length 75 [2021-01-06 21:06:50,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:06:50,291 INFO L481 AbstractCegarLoop]: Abstraction has 877 states and 1356 transitions. [2021-01-06 21:06:50,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:06:50,291 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1356 transitions. [2021-01-06 21:06:50,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-01-06 21:06:50,293 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:06:50,294 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] [2021-01-06 21:06:50,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 21:06:50,294 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:06:50,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:06:50,295 INFO L82 PathProgramCache]: Analyzing trace with hash -298149753, now seen corresponding path program 1 times [2021-01-06 21:06:50,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:06:50,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033927314] [2021-01-06 21:06:50,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:06:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:06:50,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:06:50,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033927314] [2021-01-06 21:06:50,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:06:50,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:06:50,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871717834] [2021-01-06 21:06:50,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:06:50,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:06:50,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:06:50,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:06:50,433 INFO L87 Difference]: Start difference. First operand 877 states and 1356 transitions. Second operand 3 states. [2021-01-06 21:06:50,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:06:50,542 INFO L93 Difference]: Finished difference Result 2417 states and 3774 transitions. [2021-01-06 21:06:50,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:06:50,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2021-01-06 21:06:50,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:06:50,556 INFO L225 Difference]: With dead ends: 2417 [2021-01-06 21:06:50,557 INFO L226 Difference]: Without dead ends: 1583 [2021-01-06 21:06:50,559 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 [2021-01-06 21:06:50,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2021-01-06 21:06:50,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1581. [2021-01-06 21:06:50,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2021-01-06 21:06:50,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2444 transitions. [2021-01-06 21:06:50,670 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2444 transitions. Word has length 76 [2021-01-06 21:06:50,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:06:50,672 INFO L481 AbstractCegarLoop]: Abstraction has 1581 states and 2444 transitions. [2021-01-06 21:06:50,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:06:50,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2444 transitions. [2021-01-06 21:06:50,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-01-06 21:06:50,680 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:06:50,681 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] [2021-01-06 21:06:50,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 21:06:50,681 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:06:50,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:06:50,682 INFO L82 PathProgramCache]: Analyzing trace with hash -2012894605, now seen corresponding path program 1 times [2021-01-06 21:06:50,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:06:50,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625520150] [2021-01-06 21:06:50,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:06:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:06:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:06:50,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625520150] [2021-01-06 21:06:50,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:06:50,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:06:50,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164422332] [2021-01-06 21:06:50,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:06:50,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:06:50,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:06:50,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:06:50,827 INFO L87 Difference]: Start difference. First operand 1581 states and 2444 transitions. Second operand 3 states. [2021-01-06 21:06:51,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:06:51,049 INFO L93 Difference]: Finished difference Result 4401 states and 6830 transitions. [2021-01-06 21:06:51,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:06:51,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2021-01-06 21:06:51,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:06:51,069 INFO L225 Difference]: With dead ends: 4401 [2021-01-06 21:06:51,069 INFO L226 Difference]: Without dead ends: 2863 [2021-01-06 21:06:51,073 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 [2021-01-06 21:06:51,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2021-01-06 21:06:51,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2861. [2021-01-06 21:06:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2861 states. [2021-01-06 21:06:51,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 4396 transitions. [2021-01-06 21:06:51,286 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 4396 transitions. Word has length 77 [2021-01-06 21:06:51,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:06:51,286 INFO L481 AbstractCegarLoop]: Abstraction has 2861 states and 4396 transitions. [2021-01-06 21:06:51,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:06:51,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 4396 transitions. [2021-01-06 21:06:51,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 21:06:51,288 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:06:51,288 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] [2021-01-06 21:06:51,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 21:06:51,289 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:06:51,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:06:51,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1910583587, now seen corresponding path program 1 times [2021-01-06 21:06:51,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:06:51,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397102407] [2021-01-06 21:06:51,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:06:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:06:51,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:06:51,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397102407] [2021-01-06 21:06:51,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:06:51,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 21:06:51,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935480529] [2021-01-06 21:06:51,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 21:06:51,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:06:51,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 21:06:51,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 21:06:51,520 INFO L87 Difference]: Start difference. First operand 2861 states and 4396 transitions. Second operand 6 states. [2021-01-06 21:06:52,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:06:52,177 INFO L93 Difference]: Finished difference Result 8465 states and 13038 transitions. [2021-01-06 21:06:52,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 21:06:52,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2021-01-06 21:06:52,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:06:52,212 INFO L225 Difference]: With dead ends: 8465 [2021-01-06 21:06:52,212 INFO L226 Difference]: Without dead ends: 5647 [2021-01-06 21:06:52,218 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 [2021-01-06 21:06:52,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5647 states. [2021-01-06 21:06:52,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5647 to 5645. [2021-01-06 21:06:52,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5645 states. [2021-01-06 21:06:52,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5645 states to 5645 states and 8652 transitions. [2021-01-06 21:06:52,741 INFO L78 Accepts]: Start accepts. Automaton has 5645 states and 8652 transitions. Word has length 78 [2021-01-06 21:06:52,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:06:52,742 INFO L481 AbstractCegarLoop]: Abstraction has 5645 states and 8652 transitions. [2021-01-06 21:06:52,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 21:06:52,742 INFO L276 IsEmpty]: Start isEmpty. Operand 5645 states and 8652 transitions. [2021-01-06 21:06:52,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 21:06:52,743 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:06:52,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:06:52,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 21:06:52,744 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:06:52,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:06:52,744 INFO L82 PathProgramCache]: Analyzing trace with hash -663052834, now seen corresponding path program 1 times [2021-01-06 21:06:52,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:06:52,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575846904] [2021-01-06 21:06:52,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:06:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:06:52,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:06:52,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575846904] [2021-01-06 21:06:52,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:06:52,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 21:06:52,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383663843] [2021-01-06 21:06:52,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 21:06:52,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:06:52,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 21:06:52,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 21:06:52,882 INFO L87 Difference]: Start difference. First operand 5645 states and 8652 transitions. Second operand 6 states. [2021-01-06 21:06:53,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:06:53,808 INFO L93 Difference]: Finished difference Result 16785 states and 25742 transitions. [2021-01-06 21:06:53,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 21:06:53,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2021-01-06 21:06:53,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:06:53,876 INFO L225 Difference]: With dead ends: 16785 [2021-01-06 21:06:53,877 INFO L226 Difference]: Without dead ends: 11183 [2021-01-06 21:06:53,890 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 [2021-01-06 21:06:53,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11183 states. [2021-01-06 21:06:54,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11183 to 11181. [2021-01-06 21:06:54,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11181 states. [2021-01-06 21:06:54,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11181 states to 11181 states and 17068 transitions. [2021-01-06 21:06:54,843 INFO L78 Accepts]: Start accepts. Automaton has 11181 states and 17068 transitions. Word has length 78 [2021-01-06 21:06:54,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:06:54,843 INFO L481 AbstractCegarLoop]: Abstraction has 11181 states and 17068 transitions. [2021-01-06 21:06:54,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 21:06:54,843 INFO L276 IsEmpty]: Start isEmpty. Operand 11181 states and 17068 transitions. [2021-01-06 21:06:54,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 21:06:54,844 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:06:54,844 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] [2021-01-06 21:06:54,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 21:06:54,845 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:06:54,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:06:54,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1789883929, now seen corresponding path program 1 times [2021-01-06 21:06:54,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:06:54,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214029105] [2021-01-06 21:06:54,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:06:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:06:54,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:06:54,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214029105] [2021-01-06 21:06:54,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:06:54,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 21:06:54,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706175425] [2021-01-06 21:06:54,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 21:06:54,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:06:54,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 21:06:54,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 21:06:54,991 INFO L87 Difference]: Start difference. First operand 11181 states and 17068 transitions. Second operand 5 states. [2021-01-06 21:06:55,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:06:55,907 INFO L93 Difference]: Finished difference Result 22319 states and 34093 transitions. [2021-01-06 21:06:55,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 21:06:55,908 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2021-01-06 21:06:55,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:06:55,973 INFO L225 Difference]: With dead ends: 22319 [2021-01-06 21:06:55,974 INFO L226 Difference]: Without dead ends: 11181 [2021-01-06 21:06:55,994 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 [2021-01-06 21:06:56,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11181 states. [2021-01-06 21:06:56,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11181 to 11181. [2021-01-06 21:06:56,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11181 states. [2021-01-06 21:06:56,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11181 states to 11181 states and 16940 transitions. [2021-01-06 21:06:56,889 INFO L78 Accepts]: Start accepts. Automaton has 11181 states and 16940 transitions. Word has length 78 [2021-01-06 21:06:56,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:06:56,890 INFO L481 AbstractCegarLoop]: Abstraction has 11181 states and 16940 transitions. [2021-01-06 21:06:56,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 21:06:56,890 INFO L276 IsEmpty]: Start isEmpty. Operand 11181 states and 16940 transitions. [2021-01-06 21:06:56,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-01-06 21:06:56,892 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:06:56,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:06:56,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 21:06:56,893 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:06:56,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:06:56,894 INFO L82 PathProgramCache]: Analyzing trace with hash 325812372, now seen corresponding path program 1 times [2021-01-06 21:06:56,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:06:56,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94766291] [2021-01-06 21:06:56,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:06:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:06:57,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:06:57,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94766291] [2021-01-06 21:06:57,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:06:57,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 21:06:57,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191595497] [2021-01-06 21:06:57,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 21:06:57,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:06:57,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 21:06:57,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-01-06 21:06:57,152 INFO L87 Difference]: Start difference. First operand 11181 states and 16940 transitions. Second operand 8 states. [2021-01-06 21:07:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:07:04,382 INFO L93 Difference]: Finished difference Result 133699 states and 202807 transitions. [2021-01-06 21:07:04,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 21:07:04,383 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2021-01-06 21:07:04,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:07:05,087 INFO L225 Difference]: With dead ends: 133699 [2021-01-06 21:07:05,088 INFO L226 Difference]: Without dead ends: 122561 [2021-01-06 21:07:05,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-01-06 21:07:05,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122561 states. [2021-01-06 21:07:08,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122561 to 22317. [2021-01-06 21:07:08,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22317 states. [2021-01-06 21:07:08,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22317 states to 22317 states and 33324 transitions. [2021-01-06 21:07:08,878 INFO L78 Accepts]: Start accepts. Automaton has 22317 states and 33324 transitions. Word has length 78 [2021-01-06 21:07:08,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:07:08,878 INFO L481 AbstractCegarLoop]: Abstraction has 22317 states and 33324 transitions. [2021-01-06 21:07:08,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 21:07:08,878 INFO L276 IsEmpty]: Start isEmpty. Operand 22317 states and 33324 transitions. [2021-01-06 21:07:08,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 21:07:08,879 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:07:08,879 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] [2021-01-06 21:07:08,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 21:07:08,880 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:07:08,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:07:08,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1348742768, now seen corresponding path program 1 times [2021-01-06 21:07:08,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:07:08,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948129913] [2021-01-06 21:07:08,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:07:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:07:08,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:07:08,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948129913] [2021-01-06 21:07:08,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:07:08,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 21:07:08,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246506415] [2021-01-06 21:07:08,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 21:07:08,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:07:08,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 21:07:08,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:07:08,973 INFO L87 Difference]: Start difference. First operand 22317 states and 33324 transitions. Second operand 3 states. [2021-01-06 21:07:11,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:07:11,873 INFO L93 Difference]: Finished difference Result 50003 states and 74576 transitions. [2021-01-06 21:07:11,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 21:07:11,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-01-06 21:07:11,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:07:11,945 INFO L225 Difference]: With dead ends: 50003 [2021-01-06 21:07:11,946 INFO L226 Difference]: Without dead ends: 27729 [2021-01-06 21:07:11,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 21:07:12,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27729 states. [2021-01-06 21:07:14,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27729 to 27727. [2021-01-06 21:07:14,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27727 states. [2021-01-06 21:07:14,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27727 states to 27727 states and 41102 transitions. [2021-01-06 21:07:14,708 INFO L78 Accepts]: Start accepts. Automaton has 27727 states and 41102 transitions. Word has length 80 [2021-01-06 21:07:14,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:07:14,708 INFO L481 AbstractCegarLoop]: Abstraction has 27727 states and 41102 transitions. [2021-01-06 21:07:14,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 21:07:14,708 INFO L276 IsEmpty]: Start isEmpty. Operand 27727 states and 41102 transitions. [2021-01-06 21:07:14,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-01-06 21:07:14,709 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:07:14,709 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] [2021-01-06 21:07:14,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 21:07:14,709 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:07:14,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:07:14,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1327740113, now seen corresponding path program 1 times [2021-01-06 21:07:14,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:07:14,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114656350] [2021-01-06 21:07:14,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:07:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:07:15,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:07:15,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114656350] [2021-01-06 21:07:15,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:07:15,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 21:07:15,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997243345] [2021-01-06 21:07:15,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 21:07:15,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:07:15,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 21:07:15,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 21:07:15,098 INFO L87 Difference]: Start difference. First operand 27727 states and 41102 transitions. Second operand 8 states. [2021-01-06 21:07:18,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:07:18,951 INFO L93 Difference]: Finished difference Result 69221 states and 102945 transitions. [2021-01-06 21:07:18,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 21:07:18,952 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2021-01-06 21:07:18,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:07:19,000 INFO L225 Difference]: With dead ends: 69221 [2021-01-06 21:07:19,000 INFO L226 Difference]: Without dead ends: 41539 [2021-01-06 21:07:19,027 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 [2021-01-06 21:07:19,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41539 states. [2021-01-06 21:07:21,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41539 to 27727. [2021-01-06 21:07:21,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27727 states. [2021-01-06 21:07:21,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27727 states to 27727 states and 40782 transitions. [2021-01-06 21:07:21,684 INFO L78 Accepts]: Start accepts. Automaton has 27727 states and 40782 transitions. Word has length 80 [2021-01-06 21:07:21,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:07:21,685 INFO L481 AbstractCegarLoop]: Abstraction has 27727 states and 40782 transitions. [2021-01-06 21:07:21,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 21:07:21,685 INFO L276 IsEmpty]: Start isEmpty. Operand 27727 states and 40782 transitions. [2021-01-06 21:07:21,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-01-06 21:07:21,685 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:07:21,686 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] [2021-01-06 21:07:21,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 21:07:21,686 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:07:21,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:07:21,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1787820142, now seen corresponding path program 1 times [2021-01-06 21:07:21,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:07:21,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776596005] [2021-01-06 21:07:21,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:07:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:07:21,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 21:07:21,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776596005] [2021-01-06 21:07:21,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:07:21,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 21:07:21,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80146421] [2021-01-06 21:07:21,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 21:07:21,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:07:21,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 21:07:21,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 21:07:21,763 INFO L87 Difference]: Start difference. First operand 27727 states and 40782 transitions. Second operand 5 states. [2021-01-06 21:07:26,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:07:26,729 INFO L93 Difference]: Finished difference Result 52725 states and 77208 transitions. [2021-01-06 21:07:26,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 21:07:26,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2021-01-06 21:07:26,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:07:26,794 INFO L225 Difference]: With dead ends: 52725 [2021-01-06 21:07:26,795 INFO L226 Difference]: Without dead ends: 52723 [2021-01-06 21:07:26,898 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 [2021-01-06 21:07:26,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52723 states. [2021-01-06 21:07:29,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52723 to 28751. [2021-01-06 21:07:29,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28751 states. [2021-01-06 21:07:29,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28751 states to 28751 states and 41742 transitions. [2021-01-06 21:07:29,829 INFO L78 Accepts]: Start accepts. Automaton has 28751 states and 41742 transitions. Word has length 81 [2021-01-06 21:07:29,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:07:29,829 INFO L481 AbstractCegarLoop]: Abstraction has 28751 states and 41742 transitions. [2021-01-06 21:07:29,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 21:07:29,829 INFO L276 IsEmpty]: Start isEmpty. Operand 28751 states and 41742 transitions. [2021-01-06 21:07:29,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-06 21:07:29,839 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:07:29,840 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:07:29,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 21:07:29,840 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:07:29,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:07:29,841 INFO L82 PathProgramCache]: Analyzing trace with hash 333029362, now seen corresponding path program 1 times [2021-01-06 21:07:29,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:07:29,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866334385] [2021-01-06 21:07:29,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:07:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:07:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 21:07:30,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866334385] [2021-01-06 21:07:30,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:07:30,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 21:07:30,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393308871] [2021-01-06 21:07:30,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 21:07:30,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:07:30,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 21:07:30,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 21:07:30,170 INFO L87 Difference]: Start difference. First operand 28751 states and 41742 transitions. Second operand 8 states. [2021-01-06 21:07:48,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:07:48,107 INFO L93 Difference]: Finished difference Result 204557 states and 297029 transitions. [2021-01-06 21:07:48,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 21:07:48,111 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2021-01-06 21:07:48,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:07:48,552 INFO L225 Difference]: With dead ends: 204557 [2021-01-06 21:07:48,553 INFO L226 Difference]: Without dead ends: 181259 [2021-01-06 21:07:48,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-01-06 21:07:48,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181259 states. [2021-01-06 21:07:56,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181259 to 54783. [2021-01-06 21:07:56,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54783 states. [2021-01-06 21:07:56,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54783 states to 54783 states and 79294 transitions. [2021-01-06 21:07:56,162 INFO L78 Accepts]: Start accepts. Automaton has 54783 states and 79294 transitions. Word has length 111 [2021-01-06 21:07:56,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:07:56,162 INFO L481 AbstractCegarLoop]: Abstraction has 54783 states and 79294 transitions. [2021-01-06 21:07:56,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 21:07:56,163 INFO L276 IsEmpty]: Start isEmpty. Operand 54783 states and 79294 transitions. [2021-01-06 21:07:56,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-06 21:07:56,174 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:07:56,174 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:07:56,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 21:07:56,175 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:07:56,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:07:56,175 INFO L82 PathProgramCache]: Analyzing trace with hash -317771784, now seen corresponding path program 1 times [2021-01-06 21:07:56,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:07:56,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506742815] [2021-01-06 21:07:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:07:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:07:56,336 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-01-06 21:07:56,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506742815] [2021-01-06 21:07:56,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:07:56,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 21:07:56,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836386514] [2021-01-06 21:07:56,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 21:07:56,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:07:56,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 21:07:56,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 21:07:56,339 INFO L87 Difference]: Start difference. First operand 54783 states and 79294 transitions. Second operand 8 states. [2021-01-06 21:08:20,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:08:20,176 INFO L93 Difference]: Finished difference Result 233261 states and 338469 transitions. [2021-01-06 21:08:20,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 21:08:20,180 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2021-01-06 21:08:20,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:08:20,689 INFO L225 Difference]: With dead ends: 233261 [2021-01-06 21:08:20,690 INFO L226 Difference]: Without dead ends: 204555 [2021-01-06 21:08:20,758 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 [2021-01-06 21:08:20,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204555 states. [2021-01-06 21:08:33,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204555 to 95135. [2021-01-06 21:08:33,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95135 states. [2021-01-06 21:08:33,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95135 states to 95135 states and 137310 transitions. [2021-01-06 21:08:33,744 INFO L78 Accepts]: Start accepts. Automaton has 95135 states and 137310 transitions. Word has length 111 [2021-01-06 21:08:33,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:08:33,744 INFO L481 AbstractCegarLoop]: Abstraction has 95135 states and 137310 transitions. [2021-01-06 21:08:33,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 21:08:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 95135 states and 137310 transitions. [2021-01-06 21:08:33,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-06 21:08:33,766 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:08:33,766 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:08:33,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 21:08:33,767 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:08:33,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:08:33,767 INFO L82 PathProgramCache]: Analyzing trace with hash 2001758078, now seen corresponding path program 1 times [2021-01-06 21:08:33,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:08:33,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93360470] [2021-01-06 21:08:33,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:08:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:08:33,949 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-06 21:08:33,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93360470] [2021-01-06 21:08:33,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:08:33,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 21:08:33,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461527269] [2021-01-06 21:08:33,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 21:08:33,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:08:33,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 21:08:33,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 21:08:33,951 INFO L87 Difference]: Start difference. First operand 95135 states and 137310 transitions. Second operand 8 states. [2021-01-06 21:09:03,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:09:03,919 INFO L93 Difference]: Finished difference Result 261965 states and 379845 transitions. [2021-01-06 21:09:03,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 21:09:03,919 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2021-01-06 21:09:03,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:09:04,476 INFO L225 Difference]: With dead ends: 261965 [2021-01-06 21:09:04,477 INFO L226 Difference]: Without dead ends: 233259 [2021-01-06 21:09:04,551 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 [2021-01-06 21:09:04,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233259 states. [2021-01-06 21:09:21,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233259 to 123839. [2021-01-06 21:09:21,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123839 states. [2021-01-06 21:09:22,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123839 states to 123839 states and 178686 transitions. [2021-01-06 21:09:22,387 INFO L78 Accepts]: Start accepts. Automaton has 123839 states and 178686 transitions. Word has length 111 [2021-01-06 21:09:22,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:09:22,388 INFO L481 AbstractCegarLoop]: Abstraction has 123839 states and 178686 transitions. [2021-01-06 21:09:22,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 21:09:22,388 INFO L276 IsEmpty]: Start isEmpty. Operand 123839 states and 178686 transitions. [2021-01-06 21:09:22,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-06 21:09:22,401 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:09:22,401 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:09:22,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 21:09:22,401 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:09:22,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:09:22,402 INFO L82 PathProgramCache]: Analyzing trace with hash 277216016, now seen corresponding path program 1 times [2021-01-06 21:09:22,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:09:22,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881717682] [2021-01-06 21:09:22,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:09:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:09:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-01-06 21:09:22,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881717682] [2021-01-06 21:09:22,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:09:22,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 21:09:22,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794702128] [2021-01-06 21:09:22,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 21:09:22,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:09:22,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 21:09:22,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-01-06 21:09:22,585 INFO L87 Difference]: Start difference. First operand 123839 states and 178686 transitions. Second operand 8 states. [2021-01-06 21:10:00,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 21:10:00,414 INFO L93 Difference]: Finished difference Result 290669 states and 421221 transitions. [2021-01-06 21:10:00,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 21:10:00,414 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2021-01-06 21:10:00,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 21:10:00,858 INFO L225 Difference]: With dead ends: 290669 [2021-01-06 21:10:00,858 INFO L226 Difference]: Without dead ends: 261963 [2021-01-06 21:10:00,966 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 [2021-01-06 21:10:01,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261963 states. [2021-01-06 21:10:24,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261963 to 152543. [2021-01-06 21:10:24,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152543 states. [2021-01-06 21:10:25,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152543 states to 152543 states and 220062 transitions. [2021-01-06 21:10:25,115 INFO L78 Accepts]: Start accepts. Automaton has 152543 states and 220062 transitions. Word has length 111 [2021-01-06 21:10:25,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 21:10:25,115 INFO L481 AbstractCegarLoop]: Abstraction has 152543 states and 220062 transitions. [2021-01-06 21:10:25,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 21:10:25,115 INFO L276 IsEmpty]: Start isEmpty. Operand 152543 states and 220062 transitions. [2021-01-06 21:10:25,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-01-06 21:10:25,125 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 21:10:25,125 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 21:10:25,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 21:10:25,125 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 21:10:25,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 21:10:25,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1431162122, now seen corresponding path program 1 times [2021-01-06 21:10:25,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 21:10:25,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231430134] [2021-01-06 21:10:25,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 21:10:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 21:10:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-01-06 21:10:25,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231430134] [2021-01-06 21:10:25,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 21:10:25,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 21:10:25,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665574822] [2021-01-06 21:10:25,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 21:10:25,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 21:10:25,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 21:10:25,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 21:10:25,323 INFO L87 Difference]: Start difference. First operand 152543 states and 220062 transitions. Second operand 8 states.