/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-dcfa08f [2020-12-23 11:13:35,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 11:13:35,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 11:13:36,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 11:13:36,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 11:13:36,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 11:13:36,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 11:13:36,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 11:13:36,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 11:13:36,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 11:13:36,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 11:13:36,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 11:13:36,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 11:13:36,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 11:13:36,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 11:13:36,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 11:13:36,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 11:13:36,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 11:13:36,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 11:13:36,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 11:13:36,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 11:13:36,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 11:13:36,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 11:13:36,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 11:13:36,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 11:13:36,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 11:13:36,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 11:13:36,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 11:13:36,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 11:13:36,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 11:13:36,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 11:13:36,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 11:13:36,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 11:13:36,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 11:13:36,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 11:13:36,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 11:13:36,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 11:13:36,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 11:13:36,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 11:13:36,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 11:13:36,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 11:13:36,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 11:13:36,109 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 11:13:36,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 11:13:36,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 11:13:36,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 11:13:36,111 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 11:13:36,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 11:13:36,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 11:13:36,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 11:13:36,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 11:13:36,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 11:13:36,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 11:13:36,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 11:13:36,113 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 11:13:36,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 11:13:36,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 11:13:36,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 11:13:36,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 11:13:36,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 11:13:36,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 11:13:36,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 11:13:36,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 11:13:36,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 11:13:36,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 11:13:36,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 11:13:36,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 11:13:36,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 11:13:36,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 11:13:36,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 11:13:36,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 11:13:36,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 11:13:36,562 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 11:13:36,563 INFO L432 ainManager$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 [2020-12-23 11:13:36,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/86d0356d9/95e1ce1129db4f1494b5d1ae10815b8c/FLAG5a81e32d9 [2020-12-23 11:13:37,338 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 11:13:37,339 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 [2020-12-23 11:13:37,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/86d0356d9/95e1ce1129db4f1494b5d1ae10815b8c/FLAG5a81e32d9 [2020-12-23 11:13:37,636 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/86d0356d9/95e1ce1129db4f1494b5d1ae10815b8c [2020-12-23 11:13:37,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 11:13:37,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 11:13:37,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 11:13:37,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 11:13:37,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 11:13:37,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:13:37" (1/1) ... [2020-12-23 11:13:37,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128d71c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:13:37, skipping insertion in model container [2020-12-23 11:13:37,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 11:13:37" (1/1) ... [2020-12-23 11:13:37,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 11:13:37,741 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,] [2020-12-23 11:13:38,037 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] [2020-12-23 11:13:38,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:13:38,124 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,] [2020-12-23 11:13:38,184 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] [2020-12-23 11:13:38,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 11:13:38,252 INFO L208 MainTranslator]: Completed translation [2020-12-23 11:13:38,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:13:38 WrapperNode [2020-12-23 11:13:38,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 11:13:38,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 11:13:38,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 11:13:38,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 11:13:38,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:13:38" (1/1) ... [2020-12-23 11:13:38,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:13:38" (1/1) ... [2020-12-23 11:13:38,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 11:13:38,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 11:13:38,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 11:13:38,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 11:13:38,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:13:38" (1/1) ... [2020-12-23 11:13:38,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:13:38" (1/1) ... [2020-12-23 11:13:38,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:13:38" (1/1) ... [2020-12-23 11:13:38,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:13:38" (1/1) ... [2020-12-23 11:13:38,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:13:38" (1/1) ... [2020-12-23 11:13:38,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:13:38" (1/1) ... [2020-12-23 11:13:38,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:13:38" (1/1) ... [2020-12-23 11:13:38,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 11:13:38,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 11:13:38,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 11:13:38,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 11:13:38,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:13:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 11:13:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 11:13:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 11:13:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 11:13:38,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 11:13:39,550 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 11:13:39,550 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 11:13:39,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:13:39 BoogieIcfgContainer [2020-12-23 11:13:39,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 11:13:39,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 11:13:39,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 11:13:39,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 11:13:39,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 11:13:37" (1/3) ... [2020-12-23 11:13:39,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287ea39f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:13:39, skipping insertion in model container [2020-12-23 11:13:39,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 11:13:38" (2/3) ... [2020-12-23 11:13:39,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287ea39f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 11:13:39, skipping insertion in model container [2020-12-23 11:13:39,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 11:13:39" (3/3) ... [2020-12-23 11:13:39,563 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-12-23 11:13:39,570 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 11:13:39,576 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 11:13:39,596 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 11:13:39,625 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 11:13:39,626 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 11:13:39,626 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 11:13:39,626 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 11:13:39,626 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 11:13:39,626 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 11:13:39,626 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 11:13:39,627 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 11:13:39,646 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-12-23 11:13:39,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 11:13:39,657 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:13:39,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:13:39,658 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:13:39,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:13:39,665 INFO L82 PathProgramCache]: Analyzing trace with hash -866113193, now seen corresponding path program 1 times [2020-12-23 11:13:39,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:13:39,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666797575] [2020-12-23 11:13:39,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:13:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:13:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:13:40,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666797575] [2020-12-23 11:13:40,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:13:40,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:13:40,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337153780] [2020-12-23 11:13:40,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:13:40,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:13:40,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:13:40,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:13:40,196 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 3 states. [2020-12-23 11:13:40,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:13:40,293 INFO L93 Difference]: Finished difference Result 254 states and 416 transitions. [2020-12-23 11:13:40,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:13:40,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-23 11:13:40,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:13:40,329 INFO L225 Difference]: With dead ends: 254 [2020-12-23 11:13:40,331 INFO L226 Difference]: Without dead ends: 175 [2020-12-23 11:13:40,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:13:40,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-23 11:13:40,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2020-12-23 11:13:40,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-12-23 11:13:40,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 250 transitions. [2020-12-23 11:13:40,403 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 250 transitions. Word has length 72 [2020-12-23 11:13:40,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:13:40,404 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 250 transitions. [2020-12-23 11:13:40,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:13:40,404 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 250 transitions. [2020-12-23 11:13:40,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 11:13:40,408 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:13:40,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:13:40,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 11:13:40,408 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:13:40,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:13:40,410 INFO L82 PathProgramCache]: Analyzing trace with hash -566031041, now seen corresponding path program 1 times [2020-12-23 11:13:40,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:13:40,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946411272] [2020-12-23 11:13:40,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:13:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:13:40,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:13:40,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946411272] [2020-12-23 11:13:40,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:13:40,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:13:40,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906743993] [2020-12-23 11:13:40,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:13:40,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:13:40,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:13:40,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:13:40,636 INFO L87 Difference]: Start difference. First operand 173 states and 250 transitions. Second operand 3 states. [2020-12-23 11:13:40,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:13:40,699 INFO L93 Difference]: Finished difference Result 417 states and 638 transitions. [2020-12-23 11:13:40,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:13:40,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-23 11:13:40,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:13:40,704 INFO L225 Difference]: With dead ends: 417 [2020-12-23 11:13:40,704 INFO L226 Difference]: Without dead ends: 287 [2020-12-23 11:13:40,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:13:40,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-23 11:13:40,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2020-12-23 11:13:40,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-12-23 11:13:40,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 428 transitions. [2020-12-23 11:13:40,750 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 428 transitions. Word has length 73 [2020-12-23 11:13:40,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:13:40,751 INFO L481 AbstractCegarLoop]: Abstraction has 285 states and 428 transitions. [2020-12-23 11:13:40,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:13:40,751 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 428 transitions. [2020-12-23 11:13:40,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 11:13:40,754 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:13:40,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:13:40,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 11:13:40,755 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:13:40,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:13:40,756 INFO L82 PathProgramCache]: Analyzing trace with hash -739923133, now seen corresponding path program 1 times [2020-12-23 11:13:40,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:13:40,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031314437] [2020-12-23 11:13:40,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:13:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:13:40,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:13:40,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031314437] [2020-12-23 11:13:40,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:13:40,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:13:40,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565830664] [2020-12-23 11:13:40,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:13:40,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:13:40,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:13:40,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:13:40,950 INFO L87 Difference]: Start difference. First operand 285 states and 428 transitions. Second operand 3 states. [2020-12-23 11:13:41,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:13:41,056 INFO L93 Difference]: Finished difference Result 737 states and 1146 transitions. [2020-12-23 11:13:41,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:13:41,057 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-23 11:13:41,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:13:41,062 INFO L225 Difference]: With dead ends: 737 [2020-12-23 11:13:41,062 INFO L226 Difference]: Without dead ends: 495 [2020-12-23 11:13:41,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:13:41,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-12-23 11:13:41,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 493. [2020-12-23 11:13:41,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2020-12-23 11:13:41,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 756 transitions. [2020-12-23 11:13:41,115 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 756 transitions. Word has length 74 [2020-12-23 11:13:41,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:13:41,116 INFO L481 AbstractCegarLoop]: Abstraction has 493 states and 756 transitions. [2020-12-23 11:13:41,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:13:41,116 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 756 transitions. [2020-12-23 11:13:41,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 11:13:41,119 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:13:41,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:13:41,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 11:13:41,120 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:13:41,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:13:41,121 INFO L82 PathProgramCache]: Analyzing trace with hash 330068461, now seen corresponding path program 1 times [2020-12-23 11:13:41,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:13:41,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078945577] [2020-12-23 11:13:41,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:13:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:13:41,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:13:41,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078945577] [2020-12-23 11:13:41,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:13:41,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:13:41,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665794198] [2020-12-23 11:13:41,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:13:41,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:13:41,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:13:41,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:13:41,296 INFO L87 Difference]: Start difference. First operand 493 states and 756 transitions. Second operand 3 states. [2020-12-23 11:13:41,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:13:41,358 INFO L93 Difference]: Finished difference Result 1329 states and 2078 transitions. [2020-12-23 11:13:41,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:13:41,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-23 11:13:41,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:13:41,365 INFO L225 Difference]: With dead ends: 1329 [2020-12-23 11:13:41,365 INFO L226 Difference]: Without dead ends: 879 [2020-12-23 11:13:41,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:13:41,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-12-23 11:13:41,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2020-12-23 11:13:41,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-12-23 11:13:41,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1356 transitions. [2020-12-23 11:13:41,431 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1356 transitions. Word has length 75 [2020-12-23 11:13:41,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:13:41,432 INFO L481 AbstractCegarLoop]: Abstraction has 877 states and 1356 transitions. [2020-12-23 11:13:41,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:13:41,432 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1356 transitions. [2020-12-23 11:13:41,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-23 11:13:41,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:13:41,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:13:41,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 11:13:41,457 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:13:41,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:13:41,458 INFO L82 PathProgramCache]: Analyzing trace with hash -298149753, now seen corresponding path program 1 times [2020-12-23 11:13:41,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:13:41,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323771474] [2020-12-23 11:13:41,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:13:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:13:41,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:13:41,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323771474] [2020-12-23 11:13:41,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:13:41,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:13:41,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550401787] [2020-12-23 11:13:41,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:13:41,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:13:41,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:13:41,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:13:41,609 INFO L87 Difference]: Start difference. First operand 877 states and 1356 transitions. Second operand 3 states. [2020-12-23 11:13:41,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:13:41,717 INFO L93 Difference]: Finished difference Result 2417 states and 3774 transitions. [2020-12-23 11:13:41,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:13:41,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-23 11:13:41,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:13:41,731 INFO L225 Difference]: With dead ends: 2417 [2020-12-23 11:13:41,731 INFO L226 Difference]: Without dead ends: 1583 [2020-12-23 11:13:41,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:13:41,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2020-12-23 11:13:41,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1581. [2020-12-23 11:13:41,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-12-23 11:13:41,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2444 transitions. [2020-12-23 11:13:41,834 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2444 transitions. Word has length 76 [2020-12-23 11:13:41,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:13:41,837 INFO L481 AbstractCegarLoop]: Abstraction has 1581 states and 2444 transitions. [2020-12-23 11:13:41,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:13:41,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2444 transitions. [2020-12-23 11:13:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 11:13:41,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:13:41,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:13:41,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 11:13:41,841 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:13:41,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:13:41,841 INFO L82 PathProgramCache]: Analyzing trace with hash -2012894605, now seen corresponding path program 1 times [2020-12-23 11:13:41,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:13:41,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713656831] [2020-12-23 11:13:41,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:13:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:13:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:13:41,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713656831] [2020-12-23 11:13:41,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:13:41,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:13:41,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681449213] [2020-12-23 11:13:41,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:13:41,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:13:41,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:13:41,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:13:41,930 INFO L87 Difference]: Start difference. First operand 1581 states and 2444 transitions. Second operand 3 states. [2020-12-23 11:13:42,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:13:42,143 INFO L93 Difference]: Finished difference Result 4401 states and 6830 transitions. [2020-12-23 11:13:42,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:13:42,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-23 11:13:42,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:13:42,159 INFO L225 Difference]: With dead ends: 4401 [2020-12-23 11:13:42,160 INFO L226 Difference]: Without dead ends: 2863 [2020-12-23 11:13:42,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:13:42,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2020-12-23 11:13:42,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2861. [2020-12-23 11:13:42,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2861 states. [2020-12-23 11:13:42,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 4396 transitions. [2020-12-23 11:13:42,343 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 4396 transitions. Word has length 77 [2020-12-23 11:13:42,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:13:42,343 INFO L481 AbstractCegarLoop]: Abstraction has 2861 states and 4396 transitions. [2020-12-23 11:13:42,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:13:42,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 4396 transitions. [2020-12-23 11:13:42,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 11:13:42,349 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:13:42,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:13:42,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 11:13:42,351 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:13:42,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:13:42,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1910583587, now seen corresponding path program 1 times [2020-12-23 11:13:42,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:13:42,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173763189] [2020-12-23 11:13:42,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:13:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:13:42,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:13:42,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173763189] [2020-12-23 11:13:42,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:13:42,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:13:42,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223759856] [2020-12-23 11:13:42,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:13:42,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:13:42,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:13:42,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:13:42,550 INFO L87 Difference]: Start difference. First operand 2861 states and 4396 transitions. Second operand 6 states. [2020-12-23 11:13:43,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:13:43,186 INFO L93 Difference]: Finished difference Result 8465 states and 13038 transitions. [2020-12-23 11:13:43,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:13:43,186 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-23 11:13:43,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:13:43,218 INFO L225 Difference]: With dead ends: 8465 [2020-12-23 11:13:43,218 INFO L226 Difference]: Without dead ends: 5647 [2020-12-23 11:13:43,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:13:43,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5647 states. [2020-12-23 11:13:43,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5647 to 5645. [2020-12-23 11:13:43,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5645 states. [2020-12-23 11:13:43,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5645 states to 5645 states and 8652 transitions. [2020-12-23 11:13:43,643 INFO L78 Accepts]: Start accepts. Automaton has 5645 states and 8652 transitions. Word has length 78 [2020-12-23 11:13:43,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:13:43,644 INFO L481 AbstractCegarLoop]: Abstraction has 5645 states and 8652 transitions. [2020-12-23 11:13:43,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:13:43,644 INFO L276 IsEmpty]: Start isEmpty. Operand 5645 states and 8652 transitions. [2020-12-23 11:13:43,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 11:13:43,648 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:13:43,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:13:43,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 11:13:43,649 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:13:43,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:13:43,650 INFO L82 PathProgramCache]: Analyzing trace with hash -663052834, now seen corresponding path program 1 times [2020-12-23 11:13:43,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:13:43,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555298479] [2020-12-23 11:13:43,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:13:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:13:43,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:13:43,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555298479] [2020-12-23 11:13:43,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:13:43,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:13:43,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601421609] [2020-12-23 11:13:43,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 11:13:43,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:13:43,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 11:13:43,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:13:43,796 INFO L87 Difference]: Start difference. First operand 5645 states and 8652 transitions. Second operand 6 states. [2020-12-23 11:13:44,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:13:44,646 INFO L93 Difference]: Finished difference Result 16785 states and 25742 transitions. [2020-12-23 11:13:44,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:13:44,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-23 11:13:44,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:13:44,704 INFO L225 Difference]: With dead ends: 16785 [2020-12-23 11:13:44,704 INFO L226 Difference]: Without dead ends: 11183 [2020-12-23 11:13:44,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:13:44,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11183 states. [2020-12-23 11:13:45,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11183 to 11181. [2020-12-23 11:13:45,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11181 states. [2020-12-23 11:13:45,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11181 states to 11181 states and 17068 transitions. [2020-12-23 11:13:45,677 INFO L78 Accepts]: Start accepts. Automaton has 11181 states and 17068 transitions. Word has length 78 [2020-12-23 11:13:45,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:13:45,678 INFO L481 AbstractCegarLoop]: Abstraction has 11181 states and 17068 transitions. [2020-12-23 11:13:45,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 11:13:45,680 INFO L276 IsEmpty]: Start isEmpty. Operand 11181 states and 17068 transitions. [2020-12-23 11:13:45,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 11:13:45,686 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:13:45,686 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] [2020-12-23 11:13:45,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 11:13:45,687 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:13:45,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:13:45,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1789883929, now seen corresponding path program 1 times [2020-12-23 11:13:45,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:13:45,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431756093] [2020-12-23 11:13:45,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:13:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:13:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:13:45,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431756093] [2020-12-23 11:13:45,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:13:45,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 11:13:45,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977158040] [2020-12-23 11:13:45,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:13:45,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:13:45,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:13:45,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:13:45,850 INFO L87 Difference]: Start difference. First operand 11181 states and 17068 transitions. Second operand 5 states. [2020-12-23 11:13:46,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:13:46,741 INFO L93 Difference]: Finished difference Result 22319 states and 34093 transitions. [2020-12-23 11:13:46,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 11:13:46,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-12-23 11:13:46,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:13:46,794 INFO L225 Difference]: With dead ends: 22319 [2020-12-23 11:13:46,794 INFO L226 Difference]: Without dead ends: 11181 [2020-12-23 11:13:46,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 11:13:46,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11181 states. [2020-12-23 11:13:47,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11181 to 11181. [2020-12-23 11:13:47,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11181 states. [2020-12-23 11:13:47,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11181 states to 11181 states and 16940 transitions. [2020-12-23 11:13:47,710 INFO L78 Accepts]: Start accepts. Automaton has 11181 states and 16940 transitions. Word has length 78 [2020-12-23 11:13:47,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:13:47,710 INFO L481 AbstractCegarLoop]: Abstraction has 11181 states and 16940 transitions. [2020-12-23 11:13:47,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:13:47,711 INFO L276 IsEmpty]: Start isEmpty. Operand 11181 states and 16940 transitions. [2020-12-23 11:13:47,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-23 11:13:47,711 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:13:47,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:13:47,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 11:13:47,712 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:13:47,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:13:47,713 INFO L82 PathProgramCache]: Analyzing trace with hash 325812372, now seen corresponding path program 1 times [2020-12-23 11:13:47,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:13:47,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412640870] [2020-12-23 11:13:47,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:13:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:13:47,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:13:47,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412640870] [2020-12-23 11:13:47,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:13:47,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:13:47,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529687370] [2020-12-23 11:13:47,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:13:47,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:13:47,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:13:47,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:13:47,908 INFO L87 Difference]: Start difference. First operand 11181 states and 16940 transitions. Second operand 8 states. [2020-12-23 11:13:55,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:13:55,125 INFO L93 Difference]: Finished difference Result 133699 states and 202807 transitions. [2020-12-23 11:13:55,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 11:13:55,126 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 78 [2020-12-23 11:13:55,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:13:55,558 INFO L225 Difference]: With dead ends: 133699 [2020-12-23 11:13:55,558 INFO L226 Difference]: Without dead ends: 122561 [2020-12-23 11:13:55,642 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 [2020-12-23 11:13:55,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122561 states. [2020-12-23 11:13:58,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122561 to 22317. [2020-12-23 11:13:58,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22317 states. [2020-12-23 11:13:58,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22317 states to 22317 states and 33324 transitions. [2020-12-23 11:13:58,934 INFO L78 Accepts]: Start accepts. Automaton has 22317 states and 33324 transitions. Word has length 78 [2020-12-23 11:13:58,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:13:58,934 INFO L481 AbstractCegarLoop]: Abstraction has 22317 states and 33324 transitions. [2020-12-23 11:13:58,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:13:58,934 INFO L276 IsEmpty]: Start isEmpty. Operand 22317 states and 33324 transitions. [2020-12-23 11:13:58,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 11:13:58,935 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:13:58,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:13:58,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 11:13:58,935 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:13:58,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:13:58,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1348742768, now seen corresponding path program 1 times [2020-12-23 11:13:58,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:13:58,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002333177] [2020-12-23 11:13:58,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:13:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:13:59,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:13:59,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002333177] [2020-12-23 11:13:59,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:13:59,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 11:13:59,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353252505] [2020-12-23 11:13:59,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 11:13:59,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:13:59,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 11:13:59,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:13:59,020 INFO L87 Difference]: Start difference. First operand 22317 states and 33324 transitions. Second operand 3 states. [2020-12-23 11:14:01,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:14:01,389 INFO L93 Difference]: Finished difference Result 50003 states and 74576 transitions. [2020-12-23 11:14:01,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 11:14:01,390 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-23 11:14:01,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:14:01,438 INFO L225 Difference]: With dead ends: 50003 [2020-12-23 11:14:01,438 INFO L226 Difference]: Without dead ends: 27729 [2020-12-23 11:14:01,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 11:14:01,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27729 states. [2020-12-23 11:14:03,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27729 to 27727. [2020-12-23 11:14:03,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27727 states. [2020-12-23 11:14:04,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27727 states to 27727 states and 41102 transitions. [2020-12-23 11:14:04,008 INFO L78 Accepts]: Start accepts. Automaton has 27727 states and 41102 transitions. Word has length 80 [2020-12-23 11:14:04,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:14:04,008 INFO L481 AbstractCegarLoop]: Abstraction has 27727 states and 41102 transitions. [2020-12-23 11:14:04,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 11:14:04,009 INFO L276 IsEmpty]: Start isEmpty. Operand 27727 states and 41102 transitions. [2020-12-23 11:14:04,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-23 11:14:04,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:14:04,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:14:04,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 11:14:04,010 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:14:04,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:14:04,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1327740113, now seen corresponding path program 1 times [2020-12-23 11:14:04,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:14:04,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614829258] [2020-12-23 11:14:04,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:14:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:14:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:14:04,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614829258] [2020-12-23 11:14:04,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:14:04,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:14:04,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482296700] [2020-12-23 11:14:04,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:14:04,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:14:04,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:14:04,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:14:04,413 INFO L87 Difference]: Start difference. First operand 27727 states and 41102 transitions. Second operand 8 states. [2020-12-23 11:14:08,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:14:08,395 INFO L93 Difference]: Finished difference Result 69221 states and 102945 transitions. [2020-12-23 11:14:08,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:14:08,395 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-23 11:14:08,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:14:08,454 INFO L225 Difference]: With dead ends: 69221 [2020-12-23 11:14:08,454 INFO L226 Difference]: Without dead ends: 41539 [2020-12-23 11:14:08,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2020-12-23 11:14:08,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41539 states. [2020-12-23 11:14:11,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41539 to 27727. [2020-12-23 11:14:11,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27727 states. [2020-12-23 11:14:11,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27727 states to 27727 states and 40782 transitions. [2020-12-23 11:14:11,077 INFO L78 Accepts]: Start accepts. Automaton has 27727 states and 40782 transitions. Word has length 80 [2020-12-23 11:14:11,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:14:11,077 INFO L481 AbstractCegarLoop]: Abstraction has 27727 states and 40782 transitions. [2020-12-23 11:14:11,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:14:11,077 INFO L276 IsEmpty]: Start isEmpty. Operand 27727 states and 40782 transitions. [2020-12-23 11:14:11,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-23 11:14:11,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:14:11,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 11:14:11,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 11:14:11,078 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:14:11,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:14:11,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1787820142, now seen corresponding path program 1 times [2020-12-23 11:14:11,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:14:11,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191417814] [2020-12-23 11:14:11,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:14:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:14:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 11:14:11,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191417814] [2020-12-23 11:14:11,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:14:11,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 11:14:11,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337243540] [2020-12-23 11:14:11,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 11:14:11,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:14:11,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 11:14:11,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 11:14:11,166 INFO L87 Difference]: Start difference. First operand 27727 states and 40782 transitions. Second operand 5 states. [2020-12-23 11:14:16,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:14:16,034 INFO L93 Difference]: Finished difference Result 52725 states and 77208 transitions. [2020-12-23 11:14:16,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 11:14:16,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-23 11:14:16,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:14:16,093 INFO L225 Difference]: With dead ends: 52725 [2020-12-23 11:14:16,093 INFO L226 Difference]: Without dead ends: 52723 [2020-12-23 11:14:16,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 11:14:16,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52723 states. [2020-12-23 11:14:19,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52723 to 28751. [2020-12-23 11:14:19,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28751 states. [2020-12-23 11:14:19,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28751 states to 28751 states and 41742 transitions. [2020-12-23 11:14:19,112 INFO L78 Accepts]: Start accepts. Automaton has 28751 states and 41742 transitions. Word has length 81 [2020-12-23 11:14:19,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:14:19,112 INFO L481 AbstractCegarLoop]: Abstraction has 28751 states and 41742 transitions. [2020-12-23 11:14:19,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 11:14:19,112 INFO L276 IsEmpty]: Start isEmpty. Operand 28751 states and 41742 transitions. [2020-12-23 11:14:19,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 11:14:19,127 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:14:19,128 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] [2020-12-23 11:14:19,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 11:14:19,128 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:14:19,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:14:19,129 INFO L82 PathProgramCache]: Analyzing trace with hash 333029362, now seen corresponding path program 1 times [2020-12-23 11:14:19,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:14:19,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401438560] [2020-12-23 11:14:19,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:14:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:14:19,379 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-23 11:14:19,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401438560] [2020-12-23 11:14:19,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:14:19,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:14:19,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695951616] [2020-12-23 11:14:19,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:14:19,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:14:19,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:14:19,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:14:19,382 INFO L87 Difference]: Start difference. First operand 28751 states and 41742 transitions. Second operand 8 states. [2020-12-23 11:14:38,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:14:38,336 INFO L93 Difference]: Finished difference Result 204557 states and 297029 transitions. [2020-12-23 11:14:38,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:14:38,337 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-23 11:14:38,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:14:38,756 INFO L225 Difference]: With dead ends: 204557 [2020-12-23 11:14:38,757 INFO L226 Difference]: Without dead ends: 181259 [2020-12-23 11:14:38,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-23 11:14:39,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181259 states. [2020-12-23 11:14:46,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181259 to 54783. [2020-12-23 11:14:46,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54783 states. [2020-12-23 11:14:46,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54783 states to 54783 states and 79294 transitions. [2020-12-23 11:14:46,750 INFO L78 Accepts]: Start accepts. Automaton has 54783 states and 79294 transitions. Word has length 111 [2020-12-23 11:14:46,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:14:46,751 INFO L481 AbstractCegarLoop]: Abstraction has 54783 states and 79294 transitions. [2020-12-23 11:14:46,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:14:46,751 INFO L276 IsEmpty]: Start isEmpty. Operand 54783 states and 79294 transitions. [2020-12-23 11:14:46,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 11:14:46,762 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:14:46,762 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] [2020-12-23 11:14:46,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 11:14:46,763 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:14:46,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:14:46,763 INFO L82 PathProgramCache]: Analyzing trace with hash -317771784, now seen corresponding path program 1 times [2020-12-23 11:14:46,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:14:46,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850537732] [2020-12-23 11:14:46,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:14:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:14:46,953 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-23 11:14:46,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850537732] [2020-12-23 11:14:46,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:14:46,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:14:46,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151252207] [2020-12-23 11:14:46,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:14:46,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:14:46,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:14:46,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:14:46,956 INFO L87 Difference]: Start difference. First operand 54783 states and 79294 transitions. Second operand 8 states. [2020-12-23 11:15:13,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:15:13,134 INFO L93 Difference]: Finished difference Result 233261 states and 338469 transitions. [2020-12-23 11:15:13,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:15:13,135 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-23 11:15:13,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:15:13,587 INFO L225 Difference]: With dead ends: 233261 [2020-12-23 11:15:13,587 INFO L226 Difference]: Without dead ends: 204555 [2020-12-23 11:15:13,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-23 11:15:14,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204555 states. [2020-12-23 11:15:27,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204555 to 95135. [2020-12-23 11:15:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95135 states. [2020-12-23 11:15:27,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95135 states to 95135 states and 137310 transitions. [2020-12-23 11:15:27,827 INFO L78 Accepts]: Start accepts. Automaton has 95135 states and 137310 transitions. Word has length 111 [2020-12-23 11:15:27,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:15:27,828 INFO L481 AbstractCegarLoop]: Abstraction has 95135 states and 137310 transitions. [2020-12-23 11:15:27,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:15:27,829 INFO L276 IsEmpty]: Start isEmpty. Operand 95135 states and 137310 transitions. [2020-12-23 11:15:27,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 11:15:27,844 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:15:27,845 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] [2020-12-23 11:15:27,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 11:15:27,845 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:15:27,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:15:27,846 INFO L82 PathProgramCache]: Analyzing trace with hash 2001758078, now seen corresponding path program 1 times [2020-12-23 11:15:27,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:15:27,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796724831] [2020-12-23 11:15:27,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:15:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:15:28,274 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 11:15:28,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796724831] [2020-12-23 11:15:28,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:15:28,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:15:28,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852244102] [2020-12-23 11:15:28,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:15:28,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:15:28,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:15:28,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:15:28,277 INFO L87 Difference]: Start difference. First operand 95135 states and 137310 transitions. Second operand 8 states. [2020-12-23 11:15:59,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:15:59,944 INFO L93 Difference]: Finished difference Result 261965 states and 379845 transitions. [2020-12-23 11:15:59,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:15:59,945 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-23 11:15:59,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:16:00,377 INFO L225 Difference]: With dead ends: 261965 [2020-12-23 11:16:00,377 INFO L226 Difference]: Without dead ends: 233259 [2020-12-23 11:16:00,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-23 11:16:00,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233259 states. [2020-12-23 11:16:18,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233259 to 123839. [2020-12-23 11:16:18,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123839 states. [2020-12-23 11:16:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123839 states to 123839 states and 178686 transitions. [2020-12-23 11:16:19,002 INFO L78 Accepts]: Start accepts. Automaton has 123839 states and 178686 transitions. Word has length 111 [2020-12-23 11:16:19,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:16:19,003 INFO L481 AbstractCegarLoop]: Abstraction has 123839 states and 178686 transitions. [2020-12-23 11:16:19,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:16:19,003 INFO L276 IsEmpty]: Start isEmpty. Operand 123839 states and 178686 transitions. [2020-12-23 11:16:19,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 11:16:19,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:16:19,016 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] [2020-12-23 11:16:19,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 11:16:19,017 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:16:19,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:16:19,017 INFO L82 PathProgramCache]: Analyzing trace with hash 277216016, now seen corresponding path program 1 times [2020-12-23 11:16:19,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:16:19,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640159865] [2020-12-23 11:16:19,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:16:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:16:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-23 11:16:19,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640159865] [2020-12-23 11:16:19,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:16:19,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:16:19,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695942096] [2020-12-23 11:16:19,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:16:19,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:16:19,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:16:19,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:16:19,429 INFO L87 Difference]: Start difference. First operand 123839 states and 178686 transitions. Second operand 8 states. [2020-12-23 11:16:57,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 11:16:57,981 INFO L93 Difference]: Finished difference Result 290669 states and 421221 transitions. [2020-12-23 11:16:57,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 11:16:57,982 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-23 11:16:57,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 11:16:58,590 INFO L225 Difference]: With dead ends: 290669 [2020-12-23 11:16:58,590 INFO L226 Difference]: Without dead ends: 261963 [2020-12-23 11:16:58,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-23 11:16:58,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261963 states. [2020-12-23 11:17:22,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261963 to 152543. [2020-12-23 11:17:22,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152543 states. [2020-12-23 11:17:22,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152543 states to 152543 states and 220062 transitions. [2020-12-23 11:17:22,947 INFO L78 Accepts]: Start accepts. Automaton has 152543 states and 220062 transitions. Word has length 111 [2020-12-23 11:17:22,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 11:17:22,948 INFO L481 AbstractCegarLoop]: Abstraction has 152543 states and 220062 transitions. [2020-12-23 11:17:22,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 11:17:22,948 INFO L276 IsEmpty]: Start isEmpty. Operand 152543 states and 220062 transitions. [2020-12-23 11:17:22,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 11:17:22,961 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 11:17:22,961 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] [2020-12-23 11:17:22,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 11:17:22,961 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 11:17:22,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 11:17:22,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1431162122, now seen corresponding path program 1 times [2020-12-23 11:17:22,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 11:17:22,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121606080] [2020-12-23 11:17:22,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 11:17:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 11:17:23,478 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-23 11:17:23,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121606080] [2020-12-23 11:17:23,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 11:17:23,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 11:17:23,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465015173] [2020-12-23 11:17:23,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 11:17:23,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 11:17:23,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 11:17:23,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 11:17:23,485 INFO L87 Difference]: Start difference. First operand 152543 states and 220062 transitions. Second operand 8 states.