/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-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 20:34:04,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 20:34:04,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 20:34:04,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 20:34:04,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 20:34:04,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 20:34:04,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 20:34:04,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 20:34:04,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 20:34:04,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 20:34:04,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 20:34:04,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 20:34:04,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 20:34:04,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 20:34:04,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 20:34:04,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 20:34:04,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 20:34:04,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 20:34:04,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 20:34:04,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 20:34:04,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 20:34:04,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 20:34:04,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 20:34:04,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 20:34:04,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 20:34:04,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 20:34:04,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 20:34:04,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 20:34:04,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 20:34:04,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 20:34:04,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 20:34:04,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 20:34:04,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 20:34:04,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 20:34:04,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 20:34:04,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 20:34:04,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 20:34:04,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 20:34:04,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 20:34:04,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 20:34:04,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 20:34:04,263 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 20:34:04,300 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 20:34:04,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 20:34:04,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 20:34:04,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 20:34:04,303 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 20:34:04,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 20:34:04,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 20:34:04,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 20:34:04,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 20:34:04,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 20:34:04,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 20:34:04,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 20:34:04,305 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 20:34:04,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 20:34:04,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 20:34:04,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 20:34:04,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 20:34:04,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 20:34:04,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 20:34:04,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 20:34:04,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 20:34:04,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 20:34:04,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 20:34:04,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 20:34:04,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 20:34:04,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 20:34:04,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 20:34:04,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 20:34:04,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 20:34:04,765 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 20:34:04,765 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 20:34:04,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-01-06 20:34:04,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/991aae04a/76738bbcd3b94684a58905f8b3039401/FLAG4f839f28b [2021-01-06 20:34:05,567 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 20:34:05,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-01-06 20:34:05,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/991aae04a/76738bbcd3b94684a58905f8b3039401/FLAG4f839f28b [2021-01-06 20:34:05,857 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/991aae04a/76738bbcd3b94684a58905f8b3039401 [2021-01-06 20:34:05,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 20:34:05,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 20:34:05,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 20:34:05,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 20:34:05,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 20:34:05,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 08:34:05" (1/1) ... [2021-01-06 20:34:05,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc0c9a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:34:05, skipping insertion in model container [2021-01-06 20:34:05,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 08:34:05" (1/1) ... [2021-01-06 20:34:05,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 20:34:05,929 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[~alive1~0,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[~alive2~0,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[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_5979~0,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[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] 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[~node2__m2~0,] 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[~node3__m3~0,] 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[~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[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6056~0,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,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_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__m2~1,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~1,] 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__m3~1,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~1,] 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[~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[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_6117~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~1,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~p3_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__m2~2,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~2,] 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__m3~2,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~2,] 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[~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[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~__return_6183~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_3~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~2,] [2021-01-06 20:34:06,235 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-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6761,6774] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~3,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~3,] left hand side expression in assignment: lhs: VariableLHS[~p3_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[~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_0~1,] 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_0~1,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] 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[~node3____CPAchecker_TMP_0~1,] 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_0~1,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] 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[~node2____CPAchecker_TMP_0~1,] 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_0~1,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] 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_0~2,] 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_0~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_6353~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] 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[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,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[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2021-01-06 20:34:06,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 20:34:06,368 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[~alive1~0,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[~alive2~0,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[~alive3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_5979~0,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[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~0,] 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[~node2__m2~0,] 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[~node3__m3~0,] 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[~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[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_6056~0,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,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_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__m2~1,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~1,] 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__m3~1,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~1,] 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[~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[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_6117~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~1,] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~2,] left hand side expression in assignment: lhs: VariableLHS[~p3_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__m2~2,] left hand side expression in assignment: lhs: VariableLHS[~node2__m2~2,] 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__m3~2,] left hand side expression in assignment: lhs: VariableLHS[~node3__m3~2,] 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[~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[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~__return_6183~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_3~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~2,] [2021-01-06 20:34:06,511 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-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6761,6774] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~3,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1__m1~3,] left hand side expression in assignment: lhs: VariableLHS[~p3_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[~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_0~1,] 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_0~1,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~2,] 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[~node3____CPAchecker_TMP_0~1,] 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_0~1,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] 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[~node2____CPAchecker_TMP_0~1,] 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_0~1,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] 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_0~2,] 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_0~2,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~__return_6353~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] 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[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~send2~0,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[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~p3_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~p2_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~1,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] [2021-01-06 20:34:06,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 20:34:06,572 INFO L208 MainTranslator]: Completed translation [2021-01-06 20:34:06,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:34:06 WrapperNode [2021-01-06 20:34:06,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 20:34:06,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 20:34:06,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 20:34:06,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 20:34:06,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:34:06" (1/1) ... [2021-01-06 20:34:06,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:34:06" (1/1) ... [2021-01-06 20:34:06,660 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 20:34:06,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 20:34:06,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 20:34:06,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 20:34:06,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:34:06" (1/1) ... [2021-01-06 20:34:06,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:34:06" (1/1) ... [2021-01-06 20:34:06,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:34:06" (1/1) ... [2021-01-06 20:34:06,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:34:06" (1/1) ... [2021-01-06 20:34:06,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:34:06" (1/1) ... [2021-01-06 20:34:06,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:34:06" (1/1) ... [2021-01-06 20:34:06,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:34:06" (1/1) ... [2021-01-06 20:34:06,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 20:34:06,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 20:34:06,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 20:34:06,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 20:34:06,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:34:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 20:34:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 20:34:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 20:34:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 20:34:06,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 20:34:07,965 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 20:34:07,966 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 20:34:07,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 08:34:07 BoogieIcfgContainer [2021-01-06 20:34:07,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 20:34:07,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 20:34:07,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 20:34:07,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 20:34:07,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 08:34:05" (1/3) ... [2021-01-06 20:34:07,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a454b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 08:34:07, skipping insertion in model container [2021-01-06 20:34:07,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 08:34:06" (2/3) ... [2021-01-06 20:34:07,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a454b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 08:34:07, skipping insertion in model container [2021-01-06 20:34:07,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 08:34:07" (3/3) ... [2021-01-06 20:34:07,977 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2021-01-06 20:34:07,985 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 20:34:07,991 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 20:34:08,011 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 20:34:08,042 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 20:34:08,042 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 20:34:08,042 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 20:34:08,042 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 20:34:08,042 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 20:34:08,043 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 20:34:08,043 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 20:34:08,043 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 20:34:08,066 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states. [2021-01-06 20:34:08,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-06 20:34:08,075 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:08,076 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] [2021-01-06 20:34:08,077 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:08,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:08,083 INFO L82 PathProgramCache]: Analyzing trace with hash -235222256, now seen corresponding path program 1 times [2021-01-06 20:34:08,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:08,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137537925] [2021-01-06 20:34:08,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:08,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137537925] [2021-01-06 20:34:08,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:08,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:34:08,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390507834] [2021-01-06 20:34:08,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:34:08,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:08,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:34:08,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:34:08,533 INFO L87 Difference]: Start difference. First operand 147 states. Second operand 3 states. [2021-01-06 20:34:08,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:08,699 INFO L93 Difference]: Finished difference Result 284 states and 462 transitions. [2021-01-06 20:34:08,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:34:08,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2021-01-06 20:34:08,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:08,718 INFO L225 Difference]: With dead ends: 284 [2021-01-06 20:34:08,718 INFO L226 Difference]: Without dead ends: 216 [2021-01-06 20:34:08,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:34:08,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-01-06 20:34:08,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 214. [2021-01-06 20:34:08,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2021-01-06 20:34:08,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 320 transitions. [2021-01-06 20:34:08,799 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 320 transitions. Word has length 48 [2021-01-06 20:34:08,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:08,800 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 320 transitions. [2021-01-06 20:34:08,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:34:08,801 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 320 transitions. [2021-01-06 20:34:08,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 20:34:08,803 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:08,803 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] [2021-01-06 20:34:08,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 20:34:08,804 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:08,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:08,805 INFO L82 PathProgramCache]: Analyzing trace with hash 407331856, now seen corresponding path program 1 times [2021-01-06 20:34:08,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:08,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838387639] [2021-01-06 20:34:08,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:08,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:08,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838387639] [2021-01-06 20:34:08,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:08,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:34:08,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410837715] [2021-01-06 20:34:08,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:34:08,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:08,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:34:08,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:34:08,951 INFO L87 Difference]: Start difference. First operand 214 states and 320 transitions. Second operand 3 states. [2021-01-06 20:34:09,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:09,025 INFO L93 Difference]: Finished difference Result 518 states and 794 transitions. [2021-01-06 20:34:09,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:34:09,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2021-01-06 20:34:09,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:09,033 INFO L225 Difference]: With dead ends: 518 [2021-01-06 20:34:09,033 INFO L226 Difference]: Without dead ends: 367 [2021-01-06 20:34:09,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:34:09,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-01-06 20:34:09,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2021-01-06 20:34:09,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2021-01-06 20:34:09,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 548 transitions. [2021-01-06 20:34:09,127 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 548 transitions. Word has length 51 [2021-01-06 20:34:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:09,128 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 548 transitions. [2021-01-06 20:34:09,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:34:09,128 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 548 transitions. [2021-01-06 20:34:09,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 20:34:09,131 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:09,131 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] [2021-01-06 20:34:09,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 20:34:09,132 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:09,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:09,133 INFO L82 PathProgramCache]: Analyzing trace with hash 738781713, now seen corresponding path program 1 times [2021-01-06 20:34:09,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:09,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346111441] [2021-01-06 20:34:09,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:09,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:09,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346111441] [2021-01-06 20:34:09,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:09,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:34:09,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819386698] [2021-01-06 20:34:09,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:34:09,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:09,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:34:09,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:34:09,274 INFO L87 Difference]: Start difference. First operand 365 states and 548 transitions. Second operand 3 states. [2021-01-06 20:34:09,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:09,356 INFO L93 Difference]: Finished difference Result 877 states and 1336 transitions. [2021-01-06 20:34:09,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:34:09,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2021-01-06 20:34:09,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:09,362 INFO L225 Difference]: With dead ends: 877 [2021-01-06 20:34:09,363 INFO L226 Difference]: Without dead ends: 623 [2021-01-06 20:34:09,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:34:09,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-01-06 20:34:09,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 621. [2021-01-06 20:34:09,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2021-01-06 20:34:09,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 926 transitions. [2021-01-06 20:34:09,458 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 926 transitions. Word has length 51 [2021-01-06 20:34:09,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:09,462 INFO L481 AbstractCegarLoop]: Abstraction has 621 states and 926 transitions. [2021-01-06 20:34:09,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:34:09,463 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 926 transitions. [2021-01-06 20:34:09,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 20:34:09,466 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:09,467 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] [2021-01-06 20:34:09,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 20:34:09,467 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:09,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:09,468 INFO L82 PathProgramCache]: Analyzing trace with hash -865520847, now seen corresponding path program 1 times [2021-01-06 20:34:09,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:09,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256359322] [2021-01-06 20:34:09,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:09,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256359322] [2021-01-06 20:34:09,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:09,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:34:09,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897424627] [2021-01-06 20:34:09,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:34:09,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:09,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:34:09,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:34:09,553 INFO L87 Difference]: Start difference. First operand 621 states and 926 transitions. Second operand 3 states. [2021-01-06 20:34:09,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:09,650 INFO L93 Difference]: Finished difference Result 1635 states and 2454 transitions. [2021-01-06 20:34:09,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:34:09,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2021-01-06 20:34:09,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:09,657 INFO L225 Difference]: With dead ends: 1635 [2021-01-06 20:34:09,657 INFO L226 Difference]: Without dead ends: 1101 [2021-01-06 20:34:09,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:34:09,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2021-01-06 20:34:09,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1099. [2021-01-06 20:34:09,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1099 states. [2021-01-06 20:34:09,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1608 transitions. [2021-01-06 20:34:09,721 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1608 transitions. Word has length 51 [2021-01-06 20:34:09,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:09,721 INFO L481 AbstractCegarLoop]: Abstraction has 1099 states and 1608 transitions. [2021-01-06 20:34:09,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:34:09,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1608 transitions. [2021-01-06 20:34:09,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 20:34:09,725 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:09,725 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] [2021-01-06 20:34:09,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 20:34:09,726 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:09,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:09,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1376619607, now seen corresponding path program 1 times [2021-01-06 20:34:09,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:09,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887915839] [2021-01-06 20:34:09,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:09,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:09,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887915839] [2021-01-06 20:34:09,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:09,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:34:09,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665777148] [2021-01-06 20:34:09,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:34:09,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:09,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:34:09,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:34:09,830 INFO L87 Difference]: Start difference. First operand 1099 states and 1608 transitions. Second operand 5 states. [2021-01-06 20:34:10,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:10,067 INFO L93 Difference]: Finished difference Result 3397 states and 5066 transitions. [2021-01-06 20:34:10,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:34:10,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2021-01-06 20:34:10,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:10,083 INFO L225 Difference]: With dead ends: 3397 [2021-01-06 20:34:10,083 INFO L226 Difference]: Without dead ends: 2723 [2021-01-06 20:34:10,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 20:34:10,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2021-01-06 20:34:10,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 1305. [2021-01-06 20:34:10,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2021-01-06 20:34:10,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1923 transitions. [2021-01-06 20:34:10,189 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1923 transitions. Word has length 52 [2021-01-06 20:34:10,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:10,190 INFO L481 AbstractCegarLoop]: Abstraction has 1305 states and 1923 transitions. [2021-01-06 20:34:10,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:34:10,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1923 transitions. [2021-01-06 20:34:10,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-01-06 20:34:10,191 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:10,192 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] [2021-01-06 20:34:10,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 20:34:10,192 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:10,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:10,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1542318405, now seen corresponding path program 1 times [2021-01-06 20:34:10,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:10,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099845377] [2021-01-06 20:34:10,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:10,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:10,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099845377] [2021-01-06 20:34:10,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:10,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 20:34:10,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965484414] [2021-01-06 20:34:10,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:34:10,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:10,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:34:10,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:34:10,284 INFO L87 Difference]: Start difference. First operand 1305 states and 1923 transitions. Second operand 5 states. [2021-01-06 20:34:10,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:10,609 INFO L93 Difference]: Finished difference Result 3037 states and 4485 transitions. [2021-01-06 20:34:10,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:34:10,609 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2021-01-06 20:34:10,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:10,620 INFO L225 Difference]: With dead ends: 3037 [2021-01-06 20:34:10,620 INFO L226 Difference]: Without dead ends: 1809 [2021-01-06 20:34:10,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 20:34:10,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2021-01-06 20:34:10,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1797. [2021-01-06 20:34:10,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1797 states. [2021-01-06 20:34:10,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2626 transitions. [2021-01-06 20:34:10,790 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2626 transitions. Word has length 52 [2021-01-06 20:34:10,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:10,790 INFO L481 AbstractCegarLoop]: Abstraction has 1797 states and 2626 transitions. [2021-01-06 20:34:10,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:34:10,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2626 transitions. [2021-01-06 20:34:10,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-06 20:34:10,792 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:10,793 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] [2021-01-06 20:34:10,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 20:34:10,793 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:10,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:10,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1268142435, now seen corresponding path program 1 times [2021-01-06 20:34:10,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:10,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576760984] [2021-01-06 20:34:10,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:10,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:10,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576760984] [2021-01-06 20:34:10,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:10,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 20:34:10,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615762531] [2021-01-06 20:34:10,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:34:10,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:10,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:34:10,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:34:10,857 INFO L87 Difference]: Start difference. First operand 1797 states and 2626 transitions. Second operand 5 states. [2021-01-06 20:34:11,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:11,268 INFO L93 Difference]: Finished difference Result 4218 states and 6170 transitions. [2021-01-06 20:34:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:34:11,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2021-01-06 20:34:11,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:11,282 INFO L225 Difference]: With dead ends: 4218 [2021-01-06 20:34:11,283 INFO L226 Difference]: Without dead ends: 2507 [2021-01-06 20:34:11,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 20:34:11,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2021-01-06 20:34:11,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 1797. [2021-01-06 20:34:11,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1797 states. [2021-01-06 20:34:11,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2601 transitions. [2021-01-06 20:34:11,447 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2601 transitions. Word has length 53 [2021-01-06 20:34:11,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:11,447 INFO L481 AbstractCegarLoop]: Abstraction has 1797 states and 2601 transitions. [2021-01-06 20:34:11,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:34:11,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2601 transitions. [2021-01-06 20:34:11,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-01-06 20:34:11,449 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:11,450 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] [2021-01-06 20:34:11,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 20:34:11,450 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:11,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:11,451 INFO L82 PathProgramCache]: Analyzing trace with hash 109147901, now seen corresponding path program 1 times [2021-01-06 20:34:11,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:11,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752152061] [2021-01-06 20:34:11,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:11,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752152061] [2021-01-06 20:34:11,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:11,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:34:11,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647714406] [2021-01-06 20:34:11,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:34:11,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:11,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:34:11,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:34:11,549 INFO L87 Difference]: Start difference. First operand 1797 states and 2601 transitions. Second operand 5 states. [2021-01-06 20:34:12,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:12,028 INFO L93 Difference]: Finished difference Result 5121 states and 7489 transitions. [2021-01-06 20:34:12,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:34:12,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2021-01-06 20:34:12,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:12,050 INFO L225 Difference]: With dead ends: 5121 [2021-01-06 20:34:12,051 INFO L226 Difference]: Without dead ends: 4123 [2021-01-06 20:34:12,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:34:12,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4123 states. [2021-01-06 20:34:12,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4123 to 2147. [2021-01-06 20:34:12,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2147 states. [2021-01-06 20:34:12,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3123 transitions. [2021-01-06 20:34:12,295 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3123 transitions. Word has length 53 [2021-01-06 20:34:12,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:12,296 INFO L481 AbstractCegarLoop]: Abstraction has 2147 states and 3123 transitions. [2021-01-06 20:34:12,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:34:12,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3123 transitions. [2021-01-06 20:34:12,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-01-06 20:34:12,297 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:12,298 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] [2021-01-06 20:34:12,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 20:34:12,298 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:12,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:12,299 INFO L82 PathProgramCache]: Analyzing trace with hash -442062535, now seen corresponding path program 1 times [2021-01-06 20:34:12,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:12,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802351498] [2021-01-06 20:34:12,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:12,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802351498] [2021-01-06 20:34:12,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:12,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:34:12,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188724666] [2021-01-06 20:34:12,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:34:12,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:12,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:34:12,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:34:12,406 INFO L87 Difference]: Start difference. First operand 2147 states and 3123 transitions. Second operand 5 states. [2021-01-06 20:34:12,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:12,857 INFO L93 Difference]: Finished difference Result 5493 states and 8036 transitions. [2021-01-06 20:34:12,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:34:12,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2021-01-06 20:34:12,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:12,880 INFO L225 Difference]: With dead ends: 5493 [2021-01-06 20:34:12,880 INFO L226 Difference]: Without dead ends: 4495 [2021-01-06 20:34:12,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 20:34:12,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4495 states. [2021-01-06 20:34:13,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4495 to 2683. [2021-01-06 20:34:13,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2683 states. [2021-01-06 20:34:13,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2683 states to 2683 states and 3924 transitions. [2021-01-06 20:34:13,207 INFO L78 Accepts]: Start accepts. Automaton has 2683 states and 3924 transitions. Word has length 54 [2021-01-06 20:34:13,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:13,207 INFO L481 AbstractCegarLoop]: Abstraction has 2683 states and 3924 transitions. [2021-01-06 20:34:13,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:34:13,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2683 states and 3924 transitions. [2021-01-06 20:34:13,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-01-06 20:34:13,209 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:13,209 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] [2021-01-06 20:34:13,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 20:34:13,210 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:13,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:13,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1520651092, now seen corresponding path program 1 times [2021-01-06 20:34:13,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:13,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662400180] [2021-01-06 20:34:13,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:13,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:13,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662400180] [2021-01-06 20:34:13,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:13,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:34:13,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106520913] [2021-01-06 20:34:13,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:34:13,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:13,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:34:13,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:34:13,331 INFO L87 Difference]: Start difference. First operand 2683 states and 3924 transitions. Second operand 6 states. [2021-01-06 20:34:14,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:14,123 INFO L93 Difference]: Finished difference Result 8299 states and 12150 transitions. [2021-01-06 20:34:14,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:34:14,124 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2021-01-06 20:34:14,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:14,151 INFO L225 Difference]: With dead ends: 8299 [2021-01-06 20:34:14,151 INFO L226 Difference]: Without dead ends: 5657 [2021-01-06 20:34:14,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-01-06 20:34:14,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5657 states. [2021-01-06 20:34:14,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5657 to 5617. [2021-01-06 20:34:14,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5617 states. [2021-01-06 20:34:14,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5617 states to 5617 states and 8189 transitions. [2021-01-06 20:34:14,787 INFO L78 Accepts]: Start accepts. Automaton has 5617 states and 8189 transitions. Word has length 57 [2021-01-06 20:34:14,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:14,787 INFO L481 AbstractCegarLoop]: Abstraction has 5617 states and 8189 transitions. [2021-01-06 20:34:14,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:34:14,788 INFO L276 IsEmpty]: Start isEmpty. Operand 5617 states and 8189 transitions. [2021-01-06 20:34:14,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-01-06 20:34:14,790 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:14,791 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] [2021-01-06 20:34:14,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 20:34:14,791 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:14,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:14,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1438328999, now seen corresponding path program 1 times [2021-01-06 20:34:14,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:14,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690844395] [2021-01-06 20:34:14,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:14,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:14,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690844395] [2021-01-06 20:34:14,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:14,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:34:14,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009122508] [2021-01-06 20:34:14,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 20:34:14,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:14,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 20:34:14,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 20:34:14,895 INFO L87 Difference]: Start difference. First operand 5617 states and 8189 transitions. Second operand 7 states. [2021-01-06 20:34:17,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:17,546 INFO L93 Difference]: Finished difference Result 25076 states and 36342 transitions. [2021-01-06 20:34:17,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 20:34:17,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2021-01-06 20:34:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:17,617 INFO L225 Difference]: With dead ends: 25076 [2021-01-06 20:34:17,617 INFO L226 Difference]: Without dead ends: 23342 [2021-01-06 20:34:17,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-01-06 20:34:17,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23342 states. [2021-01-06 20:34:18,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23342 to 5629. [2021-01-06 20:34:18,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5629 states. [2021-01-06 20:34:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5629 states to 5629 states and 8205 transitions. [2021-01-06 20:34:18,401 INFO L78 Accepts]: Start accepts. Automaton has 5629 states and 8205 transitions. Word has length 58 [2021-01-06 20:34:18,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:18,401 INFO L481 AbstractCegarLoop]: Abstraction has 5629 states and 8205 transitions. [2021-01-06 20:34:18,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 20:34:18,402 INFO L276 IsEmpty]: Start isEmpty. Operand 5629 states and 8205 transitions. [2021-01-06 20:34:18,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-06 20:34:18,411 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:18,411 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] [2021-01-06 20:34:18,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 20:34:18,412 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:18,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:18,413 INFO L82 PathProgramCache]: Analyzing trace with hash -497478917, now seen corresponding path program 1 times [2021-01-06 20:34:18,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:18,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242724778] [2021-01-06 20:34:18,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:18,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242724778] [2021-01-06 20:34:18,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:18,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:34:18,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422648575] [2021-01-06 20:34:18,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 20:34:18,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:18,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 20:34:18,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 20:34:18,503 INFO L87 Difference]: Start difference. First operand 5629 states and 8205 transitions. Second operand 7 states. [2021-01-06 20:34:20,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:20,969 INFO L93 Difference]: Finished difference Result 22234 states and 32130 transitions. [2021-01-06 20:34:20,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 20:34:20,970 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2021-01-06 20:34:20,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:21,008 INFO L225 Difference]: With dead ends: 22234 [2021-01-06 20:34:21,009 INFO L226 Difference]: Without dead ends: 19349 [2021-01-06 20:34:21,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-01-06 20:34:21,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19349 states. [2021-01-06 20:34:21,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19349 to 5649. [2021-01-06 20:34:21,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5649 states. [2021-01-06 20:34:21,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5649 states to 5649 states and 8229 transitions. [2021-01-06 20:34:21,720 INFO L78 Accepts]: Start accepts. Automaton has 5649 states and 8229 transitions. Word has length 59 [2021-01-06 20:34:21,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:21,721 INFO L481 AbstractCegarLoop]: Abstraction has 5649 states and 8229 transitions. [2021-01-06 20:34:21,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 20:34:21,721 INFO L276 IsEmpty]: Start isEmpty. Operand 5649 states and 8229 transitions. [2021-01-06 20:34:21,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-01-06 20:34:21,724 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:21,724 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] [2021-01-06 20:34:21,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 20:34:21,725 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:21,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:21,725 INFO L82 PathProgramCache]: Analyzing trace with hash -2094347044, now seen corresponding path program 1 times [2021-01-06 20:34:21,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:21,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814516381] [2021-01-06 20:34:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:21,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:21,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814516381] [2021-01-06 20:34:21,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:21,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:34:21,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096004827] [2021-01-06 20:34:21,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 20:34:21,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:21,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 20:34:21,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-06 20:34:21,815 INFO L87 Difference]: Start difference. First operand 5649 states and 8229 transitions. Second operand 7 states. [2021-01-06 20:34:24,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:24,611 INFO L93 Difference]: Finished difference Result 24365 states and 35190 transitions. [2021-01-06 20:34:24,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 20:34:24,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2021-01-06 20:34:24,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:24,658 INFO L225 Difference]: With dead ends: 24365 [2021-01-06 20:34:24,658 INFO L226 Difference]: Without dead ends: 22038 [2021-01-06 20:34:24,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-01-06 20:34:24,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22038 states. [2021-01-06 20:34:25,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22038 to 5727. [2021-01-06 20:34:25,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5727 states. [2021-01-06 20:34:25,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5727 states to 5727 states and 8329 transitions. [2021-01-06 20:34:25,898 INFO L78 Accepts]: Start accepts. Automaton has 5727 states and 8329 transitions. Word has length 59 [2021-01-06 20:34:25,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:25,899 INFO L481 AbstractCegarLoop]: Abstraction has 5727 states and 8329 transitions. [2021-01-06 20:34:25,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 20:34:25,899 INFO L276 IsEmpty]: Start isEmpty. Operand 5727 states and 8329 transitions. [2021-01-06 20:34:25,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-06 20:34:25,903 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:25,903 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] [2021-01-06 20:34:25,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 20:34:25,904 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:25,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:25,904 INFO L82 PathProgramCache]: Analyzing trace with hash 740296785, now seen corresponding path program 1 times [2021-01-06 20:34:25,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:25,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906393371] [2021-01-06 20:34:25,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:26,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:26,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906393371] [2021-01-06 20:34:26,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:26,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 20:34:26,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263920425] [2021-01-06 20:34:26,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 20:34:26,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:26,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 20:34:26,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-01-06 20:34:26,114 INFO L87 Difference]: Start difference. First operand 5727 states and 8329 transitions. Second operand 10 states. [2021-01-06 20:34:29,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:29,379 INFO L93 Difference]: Finished difference Result 20151 states and 29183 transitions. [2021-01-06 20:34:29,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-06 20:34:29,379 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2021-01-06 20:34:29,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:29,407 INFO L225 Difference]: With dead ends: 20151 [2021-01-06 20:34:29,407 INFO L226 Difference]: Without dead ends: 15216 [2021-01-06 20:34:29,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2021-01-06 20:34:29,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15216 states. [2021-01-06 20:34:30,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15216 to 5727. [2021-01-06 20:34:30,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5727 states. [2021-01-06 20:34:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5727 states to 5727 states and 8323 transitions. [2021-01-06 20:34:30,289 INFO L78 Accepts]: Start accepts. Automaton has 5727 states and 8323 transitions. Word has length 61 [2021-01-06 20:34:30,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:30,290 INFO L481 AbstractCegarLoop]: Abstraction has 5727 states and 8323 transitions. [2021-01-06 20:34:30,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 20:34:30,290 INFO L276 IsEmpty]: Start isEmpty. Operand 5727 states and 8323 transitions. [2021-01-06 20:34:30,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-06 20:34:30,294 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:30,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:34:30,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 20:34:30,294 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:30,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:30,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1120228239, now seen corresponding path program 1 times [2021-01-06 20:34:30,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:30,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494321215] [2021-01-06 20:34:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:30,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:30,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494321215] [2021-01-06 20:34:30,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:30,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 20:34:30,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997302416] [2021-01-06 20:34:30,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 20:34:30,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:30,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 20:34:30,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-01-06 20:34:30,494 INFO L87 Difference]: Start difference. First operand 5727 states and 8323 transitions. Second operand 10 states. [2021-01-06 20:34:34,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:34,029 INFO L93 Difference]: Finished difference Result 18637 states and 27039 transitions. [2021-01-06 20:34:34,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-01-06 20:34:34,032 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2021-01-06 20:34:34,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:34,053 INFO L225 Difference]: With dead ends: 18637 [2021-01-06 20:34:34,053 INFO L226 Difference]: Without dead ends: 13811 [2021-01-06 20:34:34,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2021-01-06 20:34:34,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13811 states. [2021-01-06 20:34:34,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13811 to 5605. [2021-01-06 20:34:34,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5605 states. [2021-01-06 20:34:34,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5605 states to 5605 states and 8129 transitions. [2021-01-06 20:34:34,837 INFO L78 Accepts]: Start accepts. Automaton has 5605 states and 8129 transitions. Word has length 61 [2021-01-06 20:34:34,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:34,837 INFO L481 AbstractCegarLoop]: Abstraction has 5605 states and 8129 transitions. [2021-01-06 20:34:34,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 20:34:34,837 INFO L276 IsEmpty]: Start isEmpty. Operand 5605 states and 8129 transitions. [2021-01-06 20:34:34,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-06 20:34:34,841 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:34,841 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] [2021-01-06 20:34:34,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 20:34:34,841 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:34,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:34,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1451678096, now seen corresponding path program 1 times [2021-01-06 20:34:34,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:34,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839153988] [2021-01-06 20:34:34,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:35,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:35,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839153988] [2021-01-06 20:34:35,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:35,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 20:34:35,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052697802] [2021-01-06 20:34:35,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 20:34:35,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:35,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 20:34:35,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-01-06 20:34:35,038 INFO L87 Difference]: Start difference. First operand 5605 states and 8129 transitions. Second operand 10 states. [2021-01-06 20:34:38,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:38,576 INFO L93 Difference]: Finished difference Result 19502 states and 28281 transitions. [2021-01-06 20:34:38,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-01-06 20:34:38,577 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2021-01-06 20:34:38,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:38,595 INFO L225 Difference]: With dead ends: 19502 [2021-01-06 20:34:38,596 INFO L226 Difference]: Without dead ends: 14672 [2021-01-06 20:34:38,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-01-06 20:34:38,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14672 states. [2021-01-06 20:34:39,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14672 to 5475. [2021-01-06 20:34:39,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5475 states. [2021-01-06 20:34:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5475 states to 5475 states and 7926 transitions. [2021-01-06 20:34:39,518 INFO L78 Accepts]: Start accepts. Automaton has 5475 states and 7926 transitions. Word has length 61 [2021-01-06 20:34:39,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:39,518 INFO L481 AbstractCegarLoop]: Abstraction has 5475 states and 7926 transitions. [2021-01-06 20:34:39,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 20:34:39,518 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states and 7926 transitions. [2021-01-06 20:34:39,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-06 20:34:39,521 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:39,522 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] [2021-01-06 20:34:39,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 20:34:39,522 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:39,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:39,522 INFO L82 PathProgramCache]: Analyzing trace with hash 218587336, now seen corresponding path program 1 times [2021-01-06 20:34:39,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:39,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189495234] [2021-01-06 20:34:39,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:39,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:39,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189495234] [2021-01-06 20:34:39,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:39,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:34:39,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706034342] [2021-01-06 20:34:39,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:34:39,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:39,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:34:39,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:34:39,567 INFO L87 Difference]: Start difference. First operand 5475 states and 7926 transitions. Second operand 3 states. [2021-01-06 20:34:40,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:40,349 INFO L93 Difference]: Finished difference Result 7758 states and 11235 transitions. [2021-01-06 20:34:40,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:34:40,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2021-01-06 20:34:40,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:40,357 INFO L225 Difference]: With dead ends: 7758 [2021-01-06 20:34:40,357 INFO L226 Difference]: Without dead ends: 5462 [2021-01-06 20:34:40,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:34:40,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5462 states. [2021-01-06 20:34:41,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5462 to 5460. [2021-01-06 20:34:41,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5460 states. [2021-01-06 20:34:41,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5460 states to 5460 states and 7795 transitions. [2021-01-06 20:34:41,105 INFO L78 Accepts]: Start accepts. Automaton has 5460 states and 7795 transitions. Word has length 62 [2021-01-06 20:34:41,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:41,105 INFO L481 AbstractCegarLoop]: Abstraction has 5460 states and 7795 transitions. [2021-01-06 20:34:41,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:34:41,105 INFO L276 IsEmpty]: Start isEmpty. Operand 5460 states and 7795 transitions. [2021-01-06 20:34:41,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-06 20:34:41,108 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:41,108 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] [2021-01-06 20:34:41,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 20:34:41,109 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:41,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:41,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1004137309, now seen corresponding path program 1 times [2021-01-06 20:34:41,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:41,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760729274] [2021-01-06 20:34:41,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:41,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:41,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760729274] [2021-01-06 20:34:41,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:41,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:34:41,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303052487] [2021-01-06 20:34:41,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:34:41,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:41,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:34:41,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:34:41,160 INFO L87 Difference]: Start difference. First operand 5460 states and 7795 transitions. Second operand 3 states. [2021-01-06 20:34:42,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:42,321 INFO L93 Difference]: Finished difference Result 7465 states and 10655 transitions. [2021-01-06 20:34:42,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:34:42,322 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2021-01-06 20:34:42,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:42,327 INFO L225 Difference]: With dead ends: 7465 [2021-01-06 20:34:42,328 INFO L226 Difference]: Without dead ends: 4763 [2021-01-06 20:34:42,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:34:42,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4763 states. [2021-01-06 20:34:43,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4763 to 4761. [2021-01-06 20:34:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4761 states. [2021-01-06 20:34:43,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4761 states to 4761 states and 6684 transitions. [2021-01-06 20:34:43,008 INFO L78 Accepts]: Start accepts. Automaton has 4761 states and 6684 transitions. Word has length 62 [2021-01-06 20:34:43,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:43,008 INFO L481 AbstractCegarLoop]: Abstraction has 4761 states and 6684 transitions. [2021-01-06 20:34:43,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:34:43,008 INFO L276 IsEmpty]: Start isEmpty. Operand 4761 states and 6684 transitions. [2021-01-06 20:34:43,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-01-06 20:34:43,011 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:43,011 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] [2021-01-06 20:34:43,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-06 20:34:43,012 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:43,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:43,012 INFO L82 PathProgramCache]: Analyzing trace with hash -17959571, now seen corresponding path program 1 times [2021-01-06 20:34:43,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:43,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588196378] [2021-01-06 20:34:43,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:43,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:43,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588196378] [2021-01-06 20:34:43,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:43,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:34:43,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926381430] [2021-01-06 20:34:43,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:34:43,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:43,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:34:43,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:34:43,056 INFO L87 Difference]: Start difference. First operand 4761 states and 6684 transitions. Second operand 3 states. [2021-01-06 20:34:43,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:43,872 INFO L93 Difference]: Finished difference Result 5753 states and 8048 transitions. [2021-01-06 20:34:43,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:34:43,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2021-01-06 20:34:43,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:43,877 INFO L225 Difference]: With dead ends: 5753 [2021-01-06 20:34:43,877 INFO L226 Difference]: Without dead ends: 4134 [2021-01-06 20:34:43,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:34:43,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2021-01-06 20:34:44,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 4132. [2021-01-06 20:34:44,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4132 states. [2021-01-06 20:34:44,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4132 states to 4132 states and 5671 transitions. [2021-01-06 20:34:44,512 INFO L78 Accepts]: Start accepts. Automaton has 4132 states and 5671 transitions. Word has length 62 [2021-01-06 20:34:44,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:44,512 INFO L481 AbstractCegarLoop]: Abstraction has 4132 states and 5671 transitions. [2021-01-06 20:34:44,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:34:44,513 INFO L276 IsEmpty]: Start isEmpty. Operand 4132 states and 5671 transitions. [2021-01-06 20:34:44,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-06 20:34:44,515 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:44,515 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] [2021-01-06 20:34:44,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-06 20:34:44,516 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:44,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:44,516 INFO L82 PathProgramCache]: Analyzing trace with hash -467159905, now seen corresponding path program 1 times [2021-01-06 20:34:44,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:44,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587540754] [2021-01-06 20:34:44,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:45,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587540754] [2021-01-06 20:34:45,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:45,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-01-06 20:34:45,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122626369] [2021-01-06 20:34:45,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-06 20:34:45,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:45,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-06 20:34:45,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2021-01-06 20:34:45,395 INFO L87 Difference]: Start difference. First operand 4132 states and 5671 transitions. Second operand 23 states. [2021-01-06 20:34:45,673 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2021-01-06 20:34:46,404 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2021-01-06 20:34:46,739 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2021-01-06 20:34:47,022 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-01-06 20:34:47,526 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2021-01-06 20:34:47,874 WARN L197 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2021-01-06 20:34:48,051 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-01-06 20:34:48,296 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-01-06 20:34:48,587 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-01-06 20:34:48,866 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2021-01-06 20:34:54,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:34:54,777 INFO L93 Difference]: Finished difference Result 10444 states and 14472 transitions. [2021-01-06 20:34:54,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-01-06 20:34:54,778 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 63 [2021-01-06 20:34:54,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:34:54,788 INFO L225 Difference]: With dead ends: 10444 [2021-01-06 20:34:54,789 INFO L226 Difference]: Without dead ends: 10241 [2021-01-06 20:34:54,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=348, Invalid=1458, Unknown=0, NotChecked=0, Total=1806 [2021-01-06 20:34:54,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10241 states. [2021-01-06 20:34:55,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10241 to 4114. [2021-01-06 20:34:55,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4114 states. [2021-01-06 20:34:55,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4114 states to 4114 states and 5645 transitions. [2021-01-06 20:34:55,527 INFO L78 Accepts]: Start accepts. Automaton has 4114 states and 5645 transitions. Word has length 63 [2021-01-06 20:34:55,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:34:55,528 INFO L481 AbstractCegarLoop]: Abstraction has 4114 states and 5645 transitions. [2021-01-06 20:34:55,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-06 20:34:55,528 INFO L276 IsEmpty]: Start isEmpty. Operand 4114 states and 5645 transitions. [2021-01-06 20:34:55,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-06 20:34:55,530 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:34:55,530 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] [2021-01-06 20:34:55,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-06 20:34:55,531 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:34:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:34:55,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1917860387, now seen corresponding path program 1 times [2021-01-06 20:34:55,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:34:55,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034811746] [2021-01-06 20:34:55,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:34:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:34:56,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:34:56,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034811746] [2021-01-06 20:34:56,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:34:56,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-01-06 20:34:56,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467785616] [2021-01-06 20:34:56,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-01-06 20:34:56,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:34:56,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-01-06 20:34:56,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2021-01-06 20:34:56,467 INFO L87 Difference]: Start difference. First operand 4114 states and 5645 transitions. Second operand 23 states. [2021-01-06 20:34:56,831 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2021-01-06 20:34:57,790 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-01-06 20:34:58,183 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2021-01-06 20:34:58,522 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2021-01-06 20:34:59,139 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2021-01-06 20:34:59,593 WARN L197 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 95 [2021-01-06 20:34:59,804 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-01-06 20:35:00,075 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-01-06 20:35:00,404 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2021-01-06 20:35:00,707 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2021-01-06 20:35:01,004 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-01-06 20:35:08,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:35:08,311 INFO L93 Difference]: Finished difference Result 13111 states and 18197 transitions. [2021-01-06 20:35:08,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-01-06 20:35:08,312 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 63 [2021-01-06 20:35:08,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:35:08,329 INFO L225 Difference]: With dead ends: 13111 [2021-01-06 20:35:08,329 INFO L226 Difference]: Without dead ends: 12908 [2021-01-06 20:35:08,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=475, Invalid=1975, Unknown=0, NotChecked=0, Total=2450 [2021-01-06 20:35:08,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12908 states. [2021-01-06 20:35:09,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12908 to 4114. [2021-01-06 20:35:09,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4114 states. [2021-01-06 20:35:09,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4114 states to 4114 states and 5644 transitions. [2021-01-06 20:35:09,129 INFO L78 Accepts]: Start accepts. Automaton has 4114 states and 5644 transitions. Word has length 63 [2021-01-06 20:35:09,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:35:09,130 INFO L481 AbstractCegarLoop]: Abstraction has 4114 states and 5644 transitions. [2021-01-06 20:35:09,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-01-06 20:35:09,130 INFO L276 IsEmpty]: Start isEmpty. Operand 4114 states and 5644 transitions. [2021-01-06 20:35:09,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-06 20:35:09,133 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:35:09,133 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] [2021-01-06 20:35:09,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-01-06 20:35:09,133 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:35:09,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:35:09,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1791049563, now seen corresponding path program 1 times [2021-01-06 20:35:09,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:35:09,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521981209] [2021-01-06 20:35:09,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:35:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:35:09,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:35:09,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521981209] [2021-01-06 20:35:09,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:35:09,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-01-06 20:35:09,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587045833] [2021-01-06 20:35:09,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-01-06 20:35:09,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:35:09,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-01-06 20:35:09,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2021-01-06 20:35:09,957 INFO L87 Difference]: Start difference. First operand 4114 states and 5644 transitions. Second operand 22 states. [2021-01-06 20:35:11,745 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-01-06 20:35:18,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:35:18,352 INFO L93 Difference]: Finished difference Result 10084 states and 13960 transitions. [2021-01-06 20:35:18,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-01-06 20:35:18,353 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 63 [2021-01-06 20:35:18,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:35:18,364 INFO L225 Difference]: With dead ends: 10084 [2021-01-06 20:35:18,365 INFO L226 Difference]: Without dead ends: 9770 [2021-01-06 20:35:18,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=376, Invalid=1694, Unknown=0, NotChecked=0, Total=2070 [2021-01-06 20:35:18,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9770 states. [2021-01-06 20:35:19,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9770 to 4126. [2021-01-06 20:35:19,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4126 states. [2021-01-06 20:35:19,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 5658 transitions. [2021-01-06 20:35:19,167 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 5658 transitions. Word has length 63 [2021-01-06 20:35:19,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:35:19,168 INFO L481 AbstractCegarLoop]: Abstraction has 4126 states and 5658 transitions. [2021-01-06 20:35:19,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-01-06 20:35:19,168 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 5658 transitions. [2021-01-06 20:35:19,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-06 20:35:19,170 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:35:19,170 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] [2021-01-06 20:35:19,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-01-06 20:35:19,170 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:35:19,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:35:19,171 INFO L82 PathProgramCache]: Analyzing trace with hash -37454644, now seen corresponding path program 1 times [2021-01-06 20:35:19,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:35:19,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46306215] [2021-01-06 20:35:19,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:35:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:35:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:35:19,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46306215] [2021-01-06 20:35:19,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:35:19,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:35:19,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378522583] [2021-01-06 20:35:19,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:35:19,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:35:19,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:35:19,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:35:19,206 INFO L87 Difference]: Start difference. First operand 4126 states and 5658 transitions. Second operand 3 states. [2021-01-06 20:35:20,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:35:20,270 INFO L93 Difference]: Finished difference Result 7691 states and 10614 transitions. [2021-01-06 20:35:20,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:35:20,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2021-01-06 20:35:20,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:35:20,278 INFO L225 Difference]: With dead ends: 7691 [2021-01-06 20:35:20,278 INFO L226 Difference]: Without dead ends: 5852 [2021-01-06 20:35:20,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:35:20,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5852 states. [2021-01-06 20:35:21,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5852 to 3952. [2021-01-06 20:35:21,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3952 states. [2021-01-06 20:35:21,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 5417 transitions. [2021-01-06 20:35:21,048 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 5417 transitions. Word has length 63 [2021-01-06 20:35:21,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:35:21,048 INFO L481 AbstractCegarLoop]: Abstraction has 3952 states and 5417 transitions. [2021-01-06 20:35:21,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:35:21,048 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 5417 transitions. [2021-01-06 20:35:21,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-01-06 20:35:21,050 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:35:21,050 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] [2021-01-06 20:35:21,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-01-06 20:35:21,050 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:35:21,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:35:21,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1257573082, now seen corresponding path program 1 times [2021-01-06 20:35:21,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:35:21,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777940315] [2021-01-06 20:35:21,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:35:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:35:21,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:35:21,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777940315] [2021-01-06 20:35:21,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:35:21,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:35:21,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102702142] [2021-01-06 20:35:21,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:35:21,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:35:21,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:35:21,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:35:21,081 INFO L87 Difference]: Start difference. First operand 3952 states and 5417 transitions. Second operand 3 states. [2021-01-06 20:35:22,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:35:22,127 INFO L93 Difference]: Finished difference Result 7089 states and 9784 transitions. [2021-01-06 20:35:22,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:35:22,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2021-01-06 20:35:22,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:35:22,135 INFO L225 Difference]: With dead ends: 7089 [2021-01-06 20:35:22,135 INFO L226 Difference]: Without dead ends: 5586 [2021-01-06 20:35:22,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:35:22,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5586 states. [2021-01-06 20:35:22,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5586 to 3843. [2021-01-06 20:35:22,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3843 states. [2021-01-06 20:35:22,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3843 states to 3843 states and 5266 transitions. [2021-01-06 20:35:22,882 INFO L78 Accepts]: Start accepts. Automaton has 3843 states and 5266 transitions. Word has length 63 [2021-01-06 20:35:22,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:35:22,882 INFO L481 AbstractCegarLoop]: Abstraction has 3843 states and 5266 transitions. [2021-01-06 20:35:22,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:35:22,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3843 states and 5266 transitions. [2021-01-06 20:35:22,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 20:35:22,884 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:35:22,884 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] [2021-01-06 20:35:22,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-01-06 20:35:22,884 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:35:22,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:35:22,885 INFO L82 PathProgramCache]: Analyzing trace with hash -59873296, now seen corresponding path program 1 times [2021-01-06 20:35:22,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:35:22,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806879014] [2021-01-06 20:35:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:35:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:35:23,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:35:23,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806879014] [2021-01-06 20:35:23,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:35:23,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-01-06 20:35:23,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632569172] [2021-01-06 20:35:23,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-01-06 20:35:23,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:35:23,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-01-06 20:35:23,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-01-06 20:35:23,736 INFO L87 Difference]: Start difference. First operand 3843 states and 5266 transitions. Second operand 17 states. [2021-01-06 20:35:24,523 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2021-01-06 20:35:24,725 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2021-01-06 20:35:24,929 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2021-01-06 20:35:25,154 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-01-06 20:35:25,368 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2021-01-06 20:35:25,594 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-01-06 20:35:25,748 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-01-06 20:35:26,010 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-01-06 20:35:26,198 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-01-06 20:35:26,371 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2021-01-06 20:35:26,583 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2021-01-06 20:35:26,788 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2021-01-06 20:35:27,048 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2021-01-06 20:35:27,196 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-01-06 20:35:27,460 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-01-06 20:35:27,698 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-01-06 20:35:27,911 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-01-06 20:35:28,170 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2021-01-06 20:35:33,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:35:33,551 INFO L93 Difference]: Finished difference Result 13918 states and 19299 transitions. [2021-01-06 20:35:33,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-01-06 20:35:33,552 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 64 [2021-01-06 20:35:33,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:35:33,568 INFO L225 Difference]: With dead ends: 13918 [2021-01-06 20:35:33,568 INFO L226 Difference]: Without dead ends: 13334 [2021-01-06 20:35:33,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=441, Invalid=1629, Unknown=0, NotChecked=0, Total=2070 [2021-01-06 20:35:33,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13334 states. [2021-01-06 20:35:34,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13334 to 3793. [2021-01-06 20:35:34,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3793 states. [2021-01-06 20:35:34,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3793 states to 3793 states and 5195 transitions. [2021-01-06 20:35:34,534 INFO L78 Accepts]: Start accepts. Automaton has 3793 states and 5195 transitions. Word has length 64 [2021-01-06 20:35:34,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:35:34,534 INFO L481 AbstractCegarLoop]: Abstraction has 3793 states and 5195 transitions. [2021-01-06 20:35:34,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-01-06 20:35:34,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3793 states and 5195 transitions. [2021-01-06 20:35:34,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-01-06 20:35:34,536 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:35:34,536 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] [2021-01-06 20:35:34,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-01-06 20:35:34,536 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:35:34,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:35:34,536 INFO L82 PathProgramCache]: Analyzing trace with hash -260780432, now seen corresponding path program 1 times [2021-01-06 20:35:34,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:35:34,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236731487] [2021-01-06 20:35:34,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:35:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:35:35,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:35:35,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236731487] [2021-01-06 20:35:35,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:35:35,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-01-06 20:35:35,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992204070] [2021-01-06 20:35:35,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 20:35:35,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:35:35,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 20:35:35,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-01-06 20:35:35,552 INFO L87 Difference]: Start difference. First operand 3793 states and 5195 transitions. Second operand 18 states. [2021-01-06 20:35:35,712 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2021-01-06 20:35:36,262 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2021-01-06 20:35:36,457 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2021-01-06 20:35:36,727 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-01-06 20:35:36,949 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2021-01-06 20:35:37,492 WARN L197 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2021-01-06 20:35:38,046 WARN L197 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2021-01-06 20:35:38,301 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-01-06 20:35:38,688 WARN L197 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-01-06 20:35:38,825 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2021-01-06 20:35:39,130 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2021-01-06 20:35:39,495 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-01-06 20:35:39,900 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2021-01-06 20:35:40,109 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-01-06 20:35:40,564 WARN L197 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2021-01-06 20:35:40,849 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2021-01-06 20:35:41,085 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2021-01-06 20:35:41,372 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2021-01-06 20:35:41,669 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2021-01-06 20:35:42,224 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2021-01-06 20:35:43,748 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2021-01-06 20:35:49,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:35:49,230 INFO L93 Difference]: Finished difference Result 13705 states and 19001 transitions. [2021-01-06 20:35:49,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-01-06 20:35:49,231 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 64 [2021-01-06 20:35:49,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:35:49,246 INFO L225 Difference]: With dead ends: 13705 [2021-01-06 20:35:49,246 INFO L226 Difference]: Without dead ends: 13365 [2021-01-06 20:35:49,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=465, Invalid=1605, Unknown=0, NotChecked=0, Total=2070 [2021-01-06 20:35:49,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13365 states. [2021-01-06 20:35:50,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13365 to 3767. [2021-01-06 20:35:50,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3767 states. [2021-01-06 20:35:50,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3767 states to 3767 states and 5159 transitions. [2021-01-06 20:35:50,292 INFO L78 Accepts]: Start accepts. Automaton has 3767 states and 5159 transitions. Word has length 64 [2021-01-06 20:35:50,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:35:50,292 INFO L481 AbstractCegarLoop]: Abstraction has 3767 states and 5159 transitions. [2021-01-06 20:35:50,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 20:35:50,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3767 states and 5159 transitions. [2021-01-06 20:35:50,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-01-06 20:35:50,294 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:35:50,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:35:50,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-01-06 20:35:50,294 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:35:50,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:35:50,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1695928295, now seen corresponding path program 1 times [2021-01-06 20:35:50,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:35:50,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886853268] [2021-01-06 20:35:50,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:35:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:35:50,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:35:50,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886853268] [2021-01-06 20:35:50,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:35:50,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 20:35:50,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521802233] [2021-01-06 20:35:50,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 20:35:50,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:35:50,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 20:35:50,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:35:50,362 INFO L87 Difference]: Start difference. First operand 3767 states and 5159 transitions. Second operand 5 states. [2021-01-06 20:35:51,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:35:51,401 INFO L93 Difference]: Finished difference Result 3773 states and 5162 transitions. [2021-01-06 20:35:51,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 20:35:51,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2021-01-06 20:35:51,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:35:51,406 INFO L225 Difference]: With dead ends: 3773 [2021-01-06 20:35:51,407 INFO L226 Difference]: Without dead ends: 3497 [2021-01-06 20:35:51,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-01-06 20:35:51,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3497 states. [2021-01-06 20:35:52,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3497 to 3493. [2021-01-06 20:35:52,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3493 states. [2021-01-06 20:35:52,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 4791 transitions. [2021-01-06 20:35:52,354 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 4791 transitions. Word has length 65 [2021-01-06 20:35:52,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:35:52,354 INFO L481 AbstractCegarLoop]: Abstraction has 3493 states and 4791 transitions. [2021-01-06 20:35:52,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 20:35:52,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 4791 transitions. [2021-01-06 20:35:52,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-01-06 20:35:52,356 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:35:52,356 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] [2021-01-06 20:35:52,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-01-06 20:35:52,356 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:35:52,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:35:52,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1507814999, now seen corresponding path program 1 times [2021-01-06 20:35:52,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:35:52,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569325066] [2021-01-06 20:35:52,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:35:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:35:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:35:52,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569325066] [2021-01-06 20:35:52,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:35:52,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:35:52,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610146428] [2021-01-06 20:35:52,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:35:52,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:35:52,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:35:52,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:35:52,399 INFO L87 Difference]: Start difference. First operand 3493 states and 4791 transitions. Second operand 3 states. [2021-01-06 20:35:54,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:35:54,152 INFO L93 Difference]: Finished difference Result 9127 states and 12627 transitions. [2021-01-06 20:35:54,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:35:54,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2021-01-06 20:35:54,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:35:54,159 INFO L225 Difference]: With dead ends: 9127 [2021-01-06 20:35:54,159 INFO L226 Difference]: Without dead ends: 6167 [2021-01-06 20:35:54,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:35:54,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6167 states. [2021-01-06 20:35:55,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6167 to 5784. [2021-01-06 20:35:55,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5784 states. [2021-01-06 20:35:55,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 7955 transitions. [2021-01-06 20:35:55,753 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 7955 transitions. Word has length 68 [2021-01-06 20:35:55,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:35:55,753 INFO L481 AbstractCegarLoop]: Abstraction has 5784 states and 7955 transitions. [2021-01-06 20:35:55,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:35:55,753 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 7955 transitions. [2021-01-06 20:35:55,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-01-06 20:35:55,755 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:35:55,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:35:55,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-01-06 20:35:55,755 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:35:55,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:35:55,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1724760844, now seen corresponding path program 1 times [2021-01-06 20:35:55,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:35:55,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14852091] [2021-01-06 20:35:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:35:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:35:55,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:35:55,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14852091] [2021-01-06 20:35:55,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:35:55,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:35:55,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608690456] [2021-01-06 20:35:55,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:35:55,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:35:55,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:35:55,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:35:55,800 INFO L87 Difference]: Start difference. First operand 5784 states and 7955 transitions. Second operand 3 states. [2021-01-06 20:35:58,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:35:58,973 INFO L93 Difference]: Finished difference Result 15736 states and 21717 transitions. [2021-01-06 20:35:58,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:35:58,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2021-01-06 20:35:58,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:35:58,985 INFO L225 Difference]: With dead ends: 15736 [2021-01-06 20:35:58,985 INFO L226 Difference]: Without dead ends: 10485 [2021-01-06 20:35:58,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:35:58,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10485 states. [2021-01-06 20:36:01,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10485 to 9703. [2021-01-06 20:36:01,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9703 states. [2021-01-06 20:36:01,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9703 states to 9703 states and 13320 transitions. [2021-01-06 20:36:01,709 INFO L78 Accepts]: Start accepts. Automaton has 9703 states and 13320 transitions. Word has length 69 [2021-01-06 20:36:01,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:36:01,709 INFO L481 AbstractCegarLoop]: Abstraction has 9703 states and 13320 transitions. [2021-01-06 20:36:01,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:36:01,709 INFO L276 IsEmpty]: Start isEmpty. Operand 9703 states and 13320 transitions. [2021-01-06 20:36:01,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-01-06 20:36:01,710 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:36:01,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:36:01,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-01-06 20:36:01,711 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:36:01,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:36:01,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1274692746, now seen corresponding path program 1 times [2021-01-06 20:36:01,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:36:01,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901195244] [2021-01-06 20:36:01,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:36:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:36:01,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:36:01,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901195244] [2021-01-06 20:36:01,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:36:01,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 20:36:01,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350286512] [2021-01-06 20:36:01,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 20:36:01,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:36:01,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 20:36:01,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 20:36:01,807 INFO L87 Difference]: Start difference. First operand 9703 states and 13320 transitions. Second operand 6 states. [2021-01-06 20:36:08,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:36:08,144 INFO L93 Difference]: Finished difference Result 19787 states and 26739 transitions. [2021-01-06 20:36:08,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 20:36:08,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2021-01-06 20:36:08,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:36:08,165 INFO L225 Difference]: With dead ends: 19787 [2021-01-06 20:36:08,165 INFO L226 Difference]: Without dead ends: 19785 [2021-01-06 20:36:08,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 20:36:08,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19785 states. [2021-01-06 20:36:11,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19785 to 10411. [2021-01-06 20:36:11,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10411 states. [2021-01-06 20:36:11,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10411 states to 10411 states and 14028 transitions. [2021-01-06 20:36:11,432 INFO L78 Accepts]: Start accepts. Automaton has 10411 states and 14028 transitions. Word has length 72 [2021-01-06 20:36:11,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:36:11,432 INFO L481 AbstractCegarLoop]: Abstraction has 10411 states and 14028 transitions. [2021-01-06 20:36:11,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 20:36:11,433 INFO L276 IsEmpty]: Start isEmpty. Operand 10411 states and 14028 transitions. [2021-01-06 20:36:11,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-01-06 20:36:11,434 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:36:11,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:36:11,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-01-06 20:36:11,434 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:36:11,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:36:11,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1392355153, now seen corresponding path program 1 times [2021-01-06 20:36:11,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:36:11,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040743485] [2021-01-06 20:36:11,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:36:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:36:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:36:11,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040743485] [2021-01-06 20:36:11,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:36:11,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:36:11,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878979823] [2021-01-06 20:36:11,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:36:11,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:36:11,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:36:11,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:36:11,485 INFO L87 Difference]: Start difference. First operand 10411 states and 14028 transitions. Second operand 3 states. [2021-01-06 20:36:17,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:36:17,640 INFO L93 Difference]: Finished difference Result 28051 states and 37534 transitions. [2021-01-06 20:36:17,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:36:17,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2021-01-06 20:36:17,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:36:17,663 INFO L225 Difference]: With dead ends: 28051 [2021-01-06 20:36:17,663 INFO L226 Difference]: Without dead ends: 18081 [2021-01-06 20:36:17,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:36:17,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18081 states. [2021-01-06 20:36:23,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18081 to 17799. [2021-01-06 20:36:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17799 states. [2021-01-06 20:36:23,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17799 states to 17799 states and 23210 transitions. [2021-01-06 20:36:23,399 INFO L78 Accepts]: Start accepts. Automaton has 17799 states and 23210 transitions. Word has length 73 [2021-01-06 20:36:23,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:36:23,399 INFO L481 AbstractCegarLoop]: Abstraction has 17799 states and 23210 transitions. [2021-01-06 20:36:23,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:36:23,400 INFO L276 IsEmpty]: Start isEmpty. Operand 17799 states and 23210 transitions. [2021-01-06 20:36:23,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-01-06 20:36:23,402 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:36:23,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 20:36:23,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-01-06 20:36:23,403 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:36:23,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:36:23,403 INFO L82 PathProgramCache]: Analyzing trace with hash 2638653, now seen corresponding path program 1 times [2021-01-06 20:36:23,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:36:23,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744552778] [2021-01-06 20:36:23,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:36:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:36:23,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:36:23,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744552778] [2021-01-06 20:36:23,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 20:36:23,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 20:36:23,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522109992] [2021-01-06 20:36:23,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 20:36:23,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:36:23,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 20:36:23,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:36:23,458 INFO L87 Difference]: Start difference. First operand 17799 states and 23210 transitions. Second operand 3 states. [2021-01-06 20:36:33,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:36:33,143 INFO L93 Difference]: Finished difference Result 45239 states and 58890 transitions. [2021-01-06 20:36:33,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 20:36:33,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2021-01-06 20:36:33,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:36:33,174 INFO L225 Difference]: With dead ends: 45239 [2021-01-06 20:36:33,174 INFO L226 Difference]: Without dead ends: 27865 [2021-01-06 20:36:33,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 20:36:33,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27865 states. [2021-01-06 20:36:41,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27865 to 25279. [2021-01-06 20:36:41,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25279 states. [2021-01-06 20:36:41,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25279 states to 25279 states and 32660 transitions. [2021-01-06 20:36:41,806 INFO L78 Accepts]: Start accepts. Automaton has 25279 states and 32660 transitions. Word has length 74 [2021-01-06 20:36:41,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 20:36:41,806 INFO L481 AbstractCegarLoop]: Abstraction has 25279 states and 32660 transitions. [2021-01-06 20:36:41,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 20:36:41,807 INFO L276 IsEmpty]: Start isEmpty. Operand 25279 states and 32660 transitions. [2021-01-06 20:36:41,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-01-06 20:36:41,811 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 20:36:41,812 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-01-06 20:36:41,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-01-06 20:36:41,812 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 20:36:41,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 20:36:41,812 INFO L82 PathProgramCache]: Analyzing trace with hash -786165995, now seen corresponding path program 1 times [2021-01-06 20:36:41,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 20:36:41,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651457316] [2021-01-06 20:36:41,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 20:36:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:36:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:36:42,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651457316] [2021-01-06 20:36:42,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522262954] [2021-01-06 20:36:42,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 20:36:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 20:36:42,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 16 conjunts are in the unsatisfiable core [2021-01-06 20:36:42,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 20:36:42,612 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 20:36:42,711 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 20:36:42,782 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 20:36:42,945 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 20:36:42,963 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 20:36:43,034 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 20:36:43,327 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 36 [2021-01-06 20:36:43,355 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 20:36:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 20:36:43,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 20:36:43,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 20 [2021-01-06 20:36:43,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089495686] [2021-01-06 20:36:43,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-01-06 20:36:43,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 20:36:43,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-01-06 20:36:43,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2021-01-06 20:36:43,640 INFO L87 Difference]: Start difference. First operand 25279 states and 32660 transitions. Second operand 21 states. [2021-01-06 20:36:43,788 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 33 [2021-01-06 20:36:46,068 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2021-01-06 20:36:46,209 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 28 [2021-01-06 20:36:46,526 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 52 [2021-01-06 20:36:47,113 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 30 [2021-01-06 20:36:47,423 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2021-01-06 20:36:47,631 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 48 [2021-01-06 20:36:48,043 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2021-01-06 20:36:48,537 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2021-01-06 20:36:49,794 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2021-01-06 20:36:49,954 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2021-01-06 20:36:50,394 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2021-01-06 20:36:50,638 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2021-01-06 20:36:50,844 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2021-01-06 20:36:50,976 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2021-01-06 20:36:51,438 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2021-01-06 20:36:51,791 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2021-01-06 20:36:51,934 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2021-01-06 20:36:52,128 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2021-01-06 20:36:52,280 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2021-01-06 20:36:52,468 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 29 [2021-01-06 20:36:52,993 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2021-01-06 20:36:53,236 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2021-01-06 20:36:53,507 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2021-01-06 20:36:54,407 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 28 [2021-01-06 20:36:54,892 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 33 [2021-01-06 20:36:55,045 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2021-01-06 20:36:55,302 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2021-01-06 20:36:55,474 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 35 [2021-01-06 20:36:55,785 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2021-01-06 20:36:56,452 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2021-01-06 20:36:56,826 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 46 [2021-01-06 20:36:56,988 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 34 [2021-01-06 20:36:58,145 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 35 [2021-01-06 20:36:58,379 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2021-01-06 20:36:59,155 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49 [2021-01-06 20:36:59,518 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 34 [2021-01-06 20:37:00,670 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 28 [2021-01-06 20:37:01,314 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 30 [2021-01-06 20:37:03,515 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2021-01-06 20:37:03,732 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2021-01-06 20:37:04,630 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 28 [2021-01-06 20:37:05,490 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2021-01-06 20:37:06,526 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2021-01-06 20:37:08,644 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2021-01-06 20:37:09,794 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2021-01-06 20:37:09,976 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2021-01-06 20:37:11,566 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2021-01-06 20:37:11,747 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2021-01-06 20:37:11,919 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2021-01-06 20:37:13,312 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2021-01-06 20:37:14,312 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 33 [2021-01-06 20:37:14,495 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 33 [2021-01-06 20:37:15,447 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2021-01-06 20:37:15,635 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2021-01-06 20:37:16,844 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2021-01-06 20:37:18,323 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 34 [2021-01-06 20:37:19,226 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-01-06 20:37:19,412 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2021-01-06 20:37:19,583 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2021-01-06 20:37:19,770 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2021-01-06 20:37:20,046 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2021-01-06 20:37:20,209 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2021-01-06 20:37:21,479 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2021-01-06 20:37:21,763 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2021-01-06 20:37:21,993 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2021-01-06 20:37:22,147 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2021-01-06 20:37:22,368 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2021-01-06 20:37:22,538 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2021-01-06 20:37:23,946 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2021-01-06 20:37:24,206 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2021-01-06 20:37:37,471 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35 [2021-01-06 20:38:03,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 20:38:03,525 INFO L93 Difference]: Finished difference Result 136508 states and 173215 transitions. [2021-01-06 20:38:03,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2021-01-06 20:38:03,526 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 92 [2021-01-06 20:38:03,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 20:38:04,056 INFO L225 Difference]: With dead ends: 136508 [2021-01-06 20:38:04,057 INFO L226 Difference]: Without dead ends: 120156 [2021-01-06 20:38:04,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11993 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=4411, Invalid=26389, Unknown=0, NotChecked=0, Total=30800 [2021-01-06 20:38:04,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120156 states.